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NCERT Exemplar Class 11 Biology Solutions Chapter 4 Animal Kingdom
Edited By Priyanka kumari | Updated on Aug 22, 2022 04:25 PM IST
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This Story also Contains
- NCERT Exemplar Class 11 Biology Solution of Chapter 4 Animal Kingdom:
- Multiple Choice Questions:
- Short Answer Type Questions:
- Short Answer Type Questions:
- Long Answer Type Questions:
- Introduction of NCERT Exemplar Class 11 Biology Solutions Chapter 4:
- Major Subtopics in NCERT Exemplar Class 11 Biology Solutions Chapter 4:
- NCERT Exemplar Class 11 Biology Solutions Chapter 4 - Learning Outcome:
- NCERT Exemplar Class 11 Biology Solutions Chapter Wise:
- Important Topics in NCERT Exemplar Class 11 Biology Solutions Chapter 4:
Also, check NCERT Class 11 Biology Solutions of other chapters.
NCERT Exemplar Class 11 Biology Solution of Chapter 4 Animal Kingdom:
Multiple Choice Questions:
Question:1
In some animal groups, the body is found divided into compartments with a serial repetition of at least some organs. This characteristic feature is called
a. Segmentation
b. Metamerism
c. Metagenesis
d. Metamorphosis
Answer:
The answer is Option (b) MetamerismExplanation: -
The body in some animal is externally as well as internally separated into fragments with a serial repetition of at least some organs. This is called Metamerism. In other words, Metamerism is the condition of being constructed of a linear series of repeating
parts. For example, in the earthworm, the body shows Metamerism.If we talk about Metagenesis, it is the reproduction cycle of an organism alternating between sexual and asexual mode. The Metamorphosis is the process through which animals such as amphibians, insects, and a few aquatic animals, experience extreme physical changes after birth.
Question:2
Given below are types of cells present in some animals. Which of the following cells can differentiate to perform different functions?
a. Choanocytes
b. Interstitial cells
c. Gastrodermal cells
d. Nematocytes
Answer:
The answer is option (b), Interstitial Cells.Explanation: -
Interstitial cells in ovary and testes can differentiate. By Interstitial cell, it refers to any cell that lies in the places amid the functional cells of a tissue.
Examples include:
- Cells present in the male testes that are responsible for the production of androgen (male sex hormone) portion of the stroma.
- Interstitial cell of Cajal (ICC) Leydig cells.
Question:3
Which one of the following sets of animals shares a four-chambered heart?
a. Amphibian, Reptiles, Birds
b. Crocodiles, Birds, Mammals
c. Crocodiles, Lizards, Turtles
d. Lizards, Mammals, Birds
Answer:
The answer is Option (b), Crocodiles, Birds, Mammals.Explanation:
The heart is generally three-chambered in reptiles with the exception of crocodiles,which possess a four-chambered heart. The division in their heart is due to the incomplete interventricular septum, in ventricles. If we talk about heart in birds and
mammals, it is four-chambered, and there is a complete division of interventricular septum in ventricles. Whereas, amphibians hold a three-chambered heart in which the ventrid are not alienated; hence, two atria and one ventricle are present.
Question:4
Which of the following pairs of animals has non-glandular skin?
a. Snake and Frog
b. Chameleon and Turtle
c. Frog and Pigeon
d. Crocodile and Tiger
Answer:
The answer is an option (b), Chameleon and Turtle.Explanation:
Chameleon and turtle belonging to Reptilia class. They possess dry and non-glandular skin with scales. Frog, pigeon, and tiger own modifications in their skin according to adaptations in their particular habitats.
Question:5
Birds and mammals share one of the following characteristics as a common feature.
a. Pigmented skin
b. Pneumatic bones
c. Viviparity
d. Warm-blooded
Answer:
The answer is the option (d), Warm-bloodedExplanation:
A distinguishing feature of warm-blooded animals is that they can maintain constant body temperature, irrespective of the surrounding environment. In other words, their body temperature is fixed. This is the common characteristic feature in birds and
mammals. Higher reptiles are the first to evolve this characteristic. Later the birds and mammals acquire this feature from higher reptiles during evolution. Concerning, pigmented skin is an adaptive feature in mammals, and which are not present in birds. Pneumatic bones are found only in birds as their flight version.These reduce bodyweight for flight.
Viviparity is shown by mammals and not by birds as they are oviparous, i.e. lay eggs.
Question:6
Which one of the following sets of animals belongs to a single taxonomic group?
a. Cuttlefish, Jellyfish, Silverfish, Dogfish, Starfish
b. Bat, Pigeon, Butterfly
c. Monkey, Chimpanzee, Man
d. Silkworm, Tapeworm, Earthworm
Answer:
The answer is the option (c), Monkey, Chimpanzee, Man.Explanation:
Monkey, chimpanzee, and man belong to a single taxonomic group. That is mammals because all of them possess the following features.
(i) Milk producing mammary glands.
(ii) Two pairs of limbs.
(iii) Presence of external ears.
(iv) Viviparity.
(v) Skin possessing hair.
Whereas the other options belong to other groups given as below:
Animal Group | Taxonomic Group |
Cuttlefish Jellyfish Silverfish Dogfish Starfish | Phylum-Mollusca, Class-Cephalopoda, Phylum-Cnidaria Class-Insecta, Order-Thysanura, Phylum-Arthropoda, Phylum-Chordata, Class-Chondrichthyes, Phylum-Echinodermata, Class-Asteroidea. |
Animal Group | Taxonomic Group |
Bat Pigeon Butterfly | Phylum-Chordata, Class-Mammalia Phylum-Chordata, Class Aves Phylum-Arthropoda,Class-Insecta, Order-Lepidoptera |
Animal Group | Taxonomic Group |
Silkworm Tapeworm Earthworm | Phylum-Arthropoda, Class-Insecta, Order- Lepidoptera Phylum-Platyhelminthes, Class-Cestoda Phylum-Annelida, Class-01igochaeta |
Question:7
Which one of the following statements is incorrect?
a. Mesoglea is present in between ectoderm and endoderm in Obelia.
b. Exhibits radial symmetry Asterias
c. Fasciola is a pseudocoelomate animal
d. Taenia is a triploblastic animal
Answer:
The answer is the option (c), Fasciola is a pseudocoelomate animal.Explanation:
Fasciola is an acoelomate animal. Fasciola is not a pseudocoelomate animal as it does not possess a body cavity, and hence, it is an acoelomate.
Mesoglea is an undifferentiated layer and is a characteristic of diploblastic and triploblastic animals present along with ectoderm and endoderm.
Asterias shows a type of symmetry called radial symmetry. A Symmetry in which the body can be divided into two equal, identical halves from any plane passing through
the central axis.
Taenia is a triploblastic animal as it possesses three germinal layers, i.e., ectoderm,endoderm, and mesoderm.
Question:8
Which one of the following statements is incorrect?
a. In cockroaches and prawns excretion of waste material occurs through malpighian tubules.
b. In ctenophores, locomotion is mediated by comb plates.
c. In Fasciola, flame cells help in excretion
d. Earthworms are hermaphrodites, and yet cross-fertilisation takes place among them.
Answer:
The answer is the option (a), in cockroaches and prawns excretion of waste materialoccurs through malpighian tubules.
Explanation:
The expression, “In cockroaches and prawns excretion of waste material occurs through malpighian tubules” is incorrect because Malpighian tubules are excretory structures in most of the insects, including cockroach, but green glands perform excretory functions in crustaceans like prawns. Rest all other statements are true.
Question:9
Which one of the following is oviparous?
a. Platypus
b. Flying fox (Bat)
c. Elephant
d. Whale
Answer:
The answer is the option (a), platypus.Explanation:
Platypus is a primitive mammal which shows many characters of their reptilian descent, such as ovaparity. This means that these lay eggs. Rest all three animals,i.e., flying fox, elephant and whale are viviparous mammals and giving birth to young ones.
Question:10
Which one of the following is a non-poisonous snake?
a. Platypus
b. Flying fox (Bat)
c. Elephant
d. Whale
Answer:
The answer is the option (c).Question:11
Match the following list of animals with their level of organisation.
Division of Labour | Animal |
Column-1 | Column-2 |
A. Orange level | i) Pheretima |
B. Cellular aggregatelevel | ii) Fasciola |
C. Tissue Level | iii) Spongilla |
D. Organ System Level | iv) Obelia |
a. i-B, ii-C, iii-D, and iv-A
b. i-B, ii-D, iii-C, and iv-A
c. i-D, ii-A, iii-B, and iv-C
d. i-A, ii-D, iii-C, and iv-B
Answer:
The answer is the option (c),i-D, ii-A, iii-B, and iv-C
Question:12
Such animals are called
a. Acoelomates
b. Pseudocoelomates
c. Coelomates
d. Haemocoelomates
Answer:
The answer is the option (b), Pseudocoelomates.Question:13
Match the column A with column B and choose the correct option
Column I A. Porifera B. Aschelminthes C. Annelida D. Arthropoda E. Echinodermata | Column II i. Canal system ii. Water-vascular system iii. Muscular pharynx iv. Jointed appendages v. Metameres |
b. A-ii, B-v, C-iii, D-iv, E-i
c. A-i, B-iii, C-v, D-iv, E-ii
d. A-i, B-v, C-iii, D-iv, E-ii
Answer:
The answer is option (c),A-i, B-iii, C-v, D-iv, E-ii
Short Answer Type Questions:
Question:1
Identify the phylum in which adults exhibit radial symmetry and larva exhibit bilateral symmetry.
Answer:
The phylum in which the radial symmetry is exhibited by the adult while the bilateral symmetry is exhibited by the larva is in the case of the phylum Echinodermata.Question:2
What is the importance of pneumatic bones and air sacs in Aves?
Answer:
Importance of Pneumatic bones lies in making the body lightweight and facilitate the flying. Air sacs are helpful in respiration and buoyancy.Question:3
What is Metagenesis? Mention an example which exhibits this phenomenon.
Answer:
Metagenesis is a phenomenon defined for the reproduction cycle of an organism alternating between sexual and asexual mode.Question:4
Answer:
Feathers are meant for flying by reducing the overall weight of the body. They create an airfoil shape of wings and help in flying. For example-In Aves, besides pneumatic bones, feathers are also helpful in making the body weigh lighter and help in flight.Feathers are also helpful in mating.
Question:5
Which group of chordates possess sucking and circular mouth without jaws?
Answer:
Cyclostomes have sucking and circular mouth that is without jaws. They are also referred to as jawless fish. Since the shape of their mouth is circular and they lack the jaws, they are also called agnathans.Question:6
Give one example each for an animal possessing placoid scales and that with cycloid scales.
Answer:
Placoid scales are defined as the tiny tough scales that cover entire skin.Examples are Trygon, Pritis.
Cycloid scales are exemplified by having a smooth outer margin. Examples are Catla, Clarias
Question:7
Mention two modifications in reptiles required for terrestrial mode of life.
Answer:
The two modification in reptiles required for terrestrial mode of life is as below:1. Internal fertilisation which is required to makes the chances of the survival of young ones better.
2. The body to be covered with dry and cornified skin and epidermal scales.
Question:8
Answer:
Cockroach (Arthropods) have the body covered with Chitinous exoskeleton, and Pila (Molluscs) have the body covered with a calcareous shell.Question:9
What is the role of the radula in molluscs?
Answer:
The radula in molluscs is a special structure which is used to scrape and scratch the food. This is also used to produce a depression the in rocks which is used by molluscs as their habitat.Question:10
Answer:
Bioluminescence is a phenomenon that involves emission and production of light by any organism. This is a result of a chemical reaction under which the chemical energy is converted into light energy. Pleurobrachia and Ctenoplana are some animals exhibiting the phenomenon of bioluminescence.They belong to phylum ctenophores like Ctenoplana, Velamen, Beroe, etc.
Question:11
Write one example each of the following in the space provided.
a. Cold blooded animal ________________________
b. Warm blooded animal ________________________
c. Animal possessing dry and cornified skin _______________
d. Dioecious animal _____________________
Answer:
Cold-blooded animal: Frog (Amphibians)b. Warm-blooded animal: Humans (Mammals)
c. Animal possessing dry and cornified skin: Lizard (Reptiles)
d. Dioecious animal: Ascaris (Aschelminthes)
Question:12
Differentiate between a diploblastic and a triploblastic animal.
Answer:
Diploblastic animals are the one with cells arranged in two embryonic layers.For Example Coelenterates
Whereas the triploblastic animals are those in which the developing embryo has a third germinal layer.
For Example, Chordates.
Question:13
Give an example of the following
a. Roundworm
b. Fish possessing poison sting
c. A limbless reptile/ amphibian
d. An oviparous mammal
Answer:
a. Roundworm: Ascarisb. Fish possessing poison sting: Trygon
c. A limbless reptile/ amphibian: reptile – Snake, Amphibian – Ichthyophis
d. An oviparous mammal: Duck-billed platypus
Question:14
Provide appropriate technical term in the space provided.
a. Blood-filled cavity in arthropods __________________________.
b. Free-floating form of cnidaria _____________________________.
c. Stinging organ of jelly fishes ______________________________.
d. Lateral appendages in aquatic annelids ___________________.
Answer:
a. A blood-filled cavity in arthropods: Haemocoelb. Free-floating form of cnidaria: Medusa
c. The stinging organ of jellyfishes: Nematocyst
d. Lateral appendages in aquatic annelids: Parapodia
Question:15
Animals Locomotory a. Octopus b. Crocodile c. Catla iii. d. Ctenoplana | Organ i. Limbs ii. Comb plates iii. Tentacles iv. Fins |
Answer:
a. Octopus – Tentaclesb. Crocodile – Limbs
c. Catla – Fins
d. Ctenoplana – Comb plates
Short Answer Type Questions:
Question:1
Differentiate between:
a. Open circulatory system and closed circulatory system
b. Oviparous and viviparous characteristic
c. Direct development and Indirect development
Answer:
a) In the open circulatory system, blood is pumped out the heart, and the cells and tissues are directly bathed whereas in the closed circulatory system blood is circulated throughout the body with the help of series of vessels. Examples of the open circulatorysystem are Arthropods and Mollucus. Examples of the closed circulatory system are Annelids and Vertebrates.
b) Oviparous refers to the Laying fertilised and unfertilised eggs, whereas viviparous refers to giving birth to young ones. Reptiles, birds, and some mammals fall into oviparous whereas Scolidon and most mammals fall into the category of viviparous.
c) Direct development refers to a form when a larval stage is absent in the development of the organism. In simple words, when the young ones resemble the adult, it is direct development, for example, mammals, reptiles, etc.
Indirect development refers to when the larval stage is present in the development of the organism which does not resemble the adult. In other words, when the young ones are different from the adults, this is indirect development, for example, frog, cockroach, silkworm.
Question:2
Answer:
In the case of radial symmetry, an individual’s body can be divided into equal halves by any plans passing through the longitudinal axis.Examples of Radial symmetry are Coelenterates, Ctenophores, Echinoderms.
In the case of bilateral symmetry, the body can be divided into two halves when the plane passes through the median longitudinal axis.
Examples of Bilateral symmetry are Annelids, Arthropods.
Question:3
Answer:
Two-chambered hearts: Chrondrichytes and osteocytesThree-chambered heart: Amphibia and Reptile
Four-chambered heart: Aves and mammalian
Question:4
Fill up the blank spaces appropriately
Phylum/Class | Excretory organ | Circulatory organ | Respiratory organ |
Arthropoda | A | B | Lungs/Gills/Tracheal system |
C | Nephridia | Closed | Skin/parapodia |
D | Metanephridia | Open | E |
Amphibia | F | Closed | Lung |
Answer:
The answer for A = Malpighian tubulesThe answer for B = Open
The answer for C = Annelida
The answer for D = Mollusca
The answer for E = Feather-like gills
The answer for F = Amphibians have kidneys as their excretory organs
Question:5
a. Amphibia b. Mammals c. Chondrichthyes d. Osteichthyes e. Cyclostomata f. Aves | i. Air bladder ii. Cartilaginous notochord iii. Mammary glands iv. Pneumatic bones v. Dual habitat vi. Sucking and circular mouth without jaws. |
Answer:
a. Amphibia – Dual habitatb. Mammals – Mammary glands
c. Chondrichthyes – Cartilaginous notochord
d. Osteichthyes – Air bladder
e. Cyclostomata – Sucking and circular mouth without jaws
f. Aves – Pneumatic bones
Question:6
Answer:
For the survival of Endoparasites inside a host body, they need to adapt to the following mentioned condition:1. Presence of adhesive organs for clinging on to the host.
2. High reproductive capacity
3. Loss of unnecessary sense organs.
4. They sometimes travel to another host so should have good adaption feature.
5. Loss of digestive system.
Question:7
Match the following and write correct choice in space provideda.
Animal a. Pila b. Cockroach c. Asterias d. Torpedo e. Parrot f. Dogfish | Characteristics of i. Jointed appendages ii. Perching iii. Water vascular system iv. Electric organ v. Presence of shell vi. Placoid scales |
a._____, b. ______, c. _____, d. ___, e. _____, f. ____,
Answer:
a. Pila – Presence of shellb. Cockroach – Jointed appendages
c. Asterias – Water vascular system
d. Torpedo – Electric organ
e. Parrot – Perching
f. Dogfish – Placoid scales
Animal a. Pila b. Cockroach c. Asterias d. Torpedo e. Parrot f. Dogfish Characteristics of i. Jointed appendages ii. Perching iii. Water vascular system iv. Electric organ v. Presence of shell vi. Placoid scales a._____, b. ______, c. _____, d. ___, e. _____, f. ____,
Question:8
Differentiate between:
a. Open and closed circulatory system
b. Oviparity and viviparity
c. Direct and indirect development
d. Acoelomate and pseudocoelomate
e. Notochord and nerve cord
f. Polyp and medusa
Answer:
a) In the open circulatory system, blood is pumped out the heart, and the cells and tissues are directly bathed whereas, in the closed circulatory system, the bloodcirculates throughout the body with assistance of a series of vessels.
b) Oviparous refers to Laying of fertilised and unfertilised eggs whereas viviparous refer to giving birth to young ones. Reptiles, birds, and some mammals fall into oviparous
whereas Scolidon and most mammals fall into the category of viviparous.
c) Direct development refers to a form when a larval stage is absent in the development of the organism. In simple words, when the young ones resemble the adult, it is direct
development. For example- mammals, reptiles, etc.
Indirect development refers to when the larval stage is present in the development of the organism which does not resemble the adult. In other words, when the young ones
are different than the adults, this is indirect development. For example- frog, cockroach, silkworm.
d) Coelomates are the animal possessing no coelom whereas Pseudocoelomates are the animals with the body cavity, which is lined by mesoderm rather than mesoderm, is
present in between ectoderm and endoderm.
e) The nerve cord is a strand comprising of solid nervous tissue while the notochord is a rod-like structure which is mesodermally derived and is formed on the dorsal side during embryonic development.
f) Polyp is a cylindrical and sessile form like Hydra while the Medusa is an free-swimming umbrella-shaped like jellyfish.
Question:9
Give the characteristic features of the following citing one example of each
a. Chondrichthyes and Osteichthyes
b. Urochordata and cephalochordate
Answer:
a) Chondrichthyes have mainly marine habitat, and their body is streamlined. They have a cartilaginous endoskeleton. Examples are scoliosis and Trygon.Osteichthyes have a streamlined body and they have both marine as well as freshwater habitat with a bony endoskeleton. Some of the examples are Freshwater: Labeo (Rohu), Marine: Hippocampus (Sea horse), Aquarium: Betta (Fighting fish).
b) In case of cephalochordates, the notochord extends from head to tail region and stays persistent throughout the life cycle, whereas in the case of urochordates, the notochord is present only in the larval tail. Examples of Urochordates: Ascidia, Salpa Examples of Cephalochordates: Branchiostoma.
Question:10
Mention two similarities between
a. Aves and mammals
b. A frog and crocodile
c. A turtle and pila
Answer:
a) Aves and mammals are warm-blooded and have a four-chambered heartb) Turtle and pilla are cold-blooded and are oviparous animals
c) A frog and crocodile are cold-blooded and are oviparous
Question:11
Name
a. A limbless animal
b. A cold-blooded animal
c. A warm-blooded animal
d. An animal possessing dry and cornified skin
e. An animal having a canal system and spicules
f. An animal with cnidoblasts
Answer:
a. An example of a limbless animal – Icthyophisb. An example of a cold-blooded animal – Trygon
c. An example of a warm-blooded animal – Macaca (monkey)
d. An example of an animal possessing dry and cornified skin – Naja (Cobra)
e. An example of an animal having a canal system and spicules – Euspongia
f. An example of an animal with cnidoblasts – Hydra
Question:12
Give an example for each of the following
a. A viviparous animal
b. A fish possessing a poison sting
c. A fish possessing an electric organ
d. An organ, which regulates buoyancy
e. Animal, which exhibits alternation of generation
f. An oviparous animal with mammary gland
Answer:
a. An example of a viviparous animal – Panthera leob. An example of a fish possessing a poison sting – Trygon
c. An example of a fish possessing an electric organ – Torpedo
d. An example of an organ, which regulates buoyancy – Air bladder
e. An example of an animal, which exhibits alternation of generation – Obelia
f. An example of a an oviparous animal with mammary gland – Echidna
Question:13
Animal Excretory Organ/Unit a. Balanoglossus b. Leech c. Locust d. Liver fluke e. Sea urchin f. Pila | Animal Excretory Organ/Unit i. Metanephridia ii. Nephridia iii. Flame cells iv. absent v. malpighian tubule vi. Probosci’s gland |
a. ____________________, b. ____________________, c. _ d. ____________________, e. ____________________, f. ____________________
Answer:
a. Balanoglossus – Proboscis glandb. Leech – Nephridia
c. Locust – Malpighian tubule
d. Liver fluke – Flame cells
e. Sea urchin – Absent
f. Pila – Metanephrida
Long Answer Type Questions:
Question:1
Answer:
Chordates | Non-Chordates |
They have a notochord Their tail is present at some stage in life Their heart is ventral Their CNS is dorsal Gill slits are present in the pharynx | They do not have a notochord Their tail is entirely absent Their heart is dorsal CNS is central, solid, and double Gill slits are absent |
Question:2
Answer:
Germinal layers are those layers which formed during the process of gastrulation. It is widely described into three layers-1.-The outer layer of germ is known as the ectoderm.
2.-The middle one is the endoderm
3. The innermost is the endoderm.
Coelomates are described as the organisms who are possessing coeloms, which is the body cavity lined by the mesoderm. Phylum Annelida, Mollusca, arthropods, etc. are examples of coelomates.
Acoelomates are the organisms with absent body cavities are. E.g. Platyhelminthes.Instead of have a lining by mesoderm, some organisms will have them in the form of a scattered pouch located in between the ectoderm and endoderm. This type of a body
cavity is known as pseudocolour, and animals possessing pseudocolour are often referred to as pseudocoelomates, e.g., Ascaris.
Question:3
Answer:
The external features and habitats of animals belonging to class, amphibia and reptilia are as follows: -Amphibia
1. Amphibia are thin and have smooth skin which can live on both land and water.
2. Their have a pair of limbs.
3. Their eyes have eyelids.
4. A tympanum is representing the ears.
5. Examples are Rana(frog) and cobra
Reptilia
1. Reptiles are covered with dry and confined skin and scales.
2. They mostly live on land. Tympanum represents ear.
3. They have a pair of limbs. They will creep and crawl.
4. These category organisms are oviparous; fertilisation is internal, and development is direct or indirect.
5. Examples are crocodile, turtle etc.
Question:4
Mammals are most adapted among the vertebrates. Elaborate.
Answer:
Mammals have significantly adapted the most among the vertebrates. They can be found across a diverse range of habitats like deserts, plains, and mountains. They diverge in the type of jaws and sexes are separate, and fertilisation is internal. They
have a couple of limbs which are used for walking, burrowing, climbing etc. They have the mammary glands, which produces milk that is used to feed their young ones. They are warm-blooded which in turn helps them regulate their body temperature efficiently in
all types of weather conditions. They have hair-like arrangements that work as an insulation against cold temperatures. The heart present in mammals has four chambers and their brains are highly developed. Some examples of mammals are Whales, Humans, Dogs, Cows, etc
The significant features which make them most adaptive can be summarised as below:
- They consume organic material for their survival.
- They undertake sexual reproduction
- Animals that are living together are engaged in complicated interactions with each other and thereby form the part of a ‘’food web.’’
- In total, there are more than seven million different animal species.
- Animals breathe oxygen in and then release out carbon dioxide.
Introduction of NCERT Exemplar Class 11 Biology Solutions Chapter 4:
NCERT exemplar solutions for Class 11 Biology chapter 4 is about Animal Kingdom. Chapter 4 is a very important part of your syllabus, and it deals with animals and their types. Animals are of many different types and animals here refer to the multicellular organisms. Millions of species have been discovered by scientists and many are still to be found. So, it becomes important to classify these species properly and give them a position in a category.
Major Subtopics in NCERT Exemplar Class 11 Biology Solutions Chapter 4:
Following are the major subtopics in NCERT exemplar class 11 Biology chapter 4 solutions are
- Basis of Classification
- Levels of Organization
- Symmetry
- Diploblastic and Triploblastic Organization
- Coelom
- Segmentation
- Notochord
- Classification of Animals
- Phylum– Porifera
- Phylum- Coelenterata(Cnidaria)
- Phylum- Ctenophora
- Phylum- Platyhelminthes
- Phylum- Aschelminthes
- Phylum- Annelida
- Phylum- Arthropoda
- Phylum- Mollusca
- Phylum- Echinodermata
- Phylum- Hemichordata
- Phylum- Chordata
NCERT Exemplar Class 11 Biology Solutions Chapter 4 - Learning Outcome:
In Class 11 Biology NCERT Exemplar solutions chapter 4 the students will learn more about the animals and their classification. The chapter is an interesting one but trying to remember it can be a little bit tricky. The students will find every topic in this NCERT Exemplar Class 11 Biology chapter 4 solutions in a fairly detailed manner and properly explained. Furthermore, the chapter will be of great importance for the students who are interested in zoology. So, the chapter is one of the important topics for the Class 11 Biology.
NCERT Exemplar Class 11 Biology Solutions Chapter Wise:
NEET Highest Scoring Chapters & Topics
Most Scoring concepts For NEET (Based On Previous Year Analysis)
Download EBookImportant Topics in NCERT Exemplar Class 11 Biology Solutions Chapter 4:
· Levels of Organization – There are three levels of the organization, And these three levels are- cellular, tissue, and organ.
· Symmetry – The animals are categorized in this step (mostly on the bases of symmetry).
· Diploblastic and Triploblastic Organization – Animals having two embryonic layers are Diploblastic and organisms in which the developing embryo has a third germinal layer.
· Coelom – This involves the presence or absence of a cavity between the body wall and the gut wall.
· Segmentation – Segmentation is an external and internal division of the body into segments.
· Notochord – It refers to a mesodermally derived rod-like structure.
NCERT Exemplar Class 11 Solutions:
Check Chapter-Wise Solutions of Questions Given in Book:
Chapter 1 | |
Chapter 2 | |
Chapter 3 | |
Chapter 4 | |
Chapter 5 | |
Chapter 6 | |
Chapter 7 | |
Chapter 8 | |
Chapter 9 | |
Chapter 10 | |
Chapter 11 | |
Chapter 12 | |
Chapter 13 | |
Chapter 14 | |
Chapter 15 | |
Chapter 16 | |
Chapter 17 | |
Chapter 18 | |
Chapter 19 | |
Chapter 20 | |
Chapter 21 | |
Chapter 22 |
Also, Read NCERT Solution subject wise
- NCERT Solutions for Class 11 Maths
- NCERT Solutions for Class 11 Physics
- NCERT Solutions for Class 11 Chemistry
Must Read NCERT Notes subject wise
- NCERT Notes for Class 11 Maths
- NCERT Notes for Class 11 Physics
- NCERT Notes for Class 11 Chemistry
- NCERT Notes for Class 11 Biology
Also Check NCERT Books and NCERT Syllabus here
Frequently Asked Questions (FAQs)
1. Will NCERT biology syllabus of class 11 is going to be reduced in 2020-2021?
Yes, the NCERT Biology syllabus for Class 11 2020-2021 is reduced.
2. From where can I download NCERT biology book for class 11 and 12?
You can download the book directly from the NCERT website.
3. Name some animals that are found parasitic on human beings from the Chapter 4 of NCERT Exemplar Solutions for Class 11 Biology.
Some animals that are found parasitic on human beings from the Chapter 4 of NCERT Exemplar Solutions for Class 11 Biology are –
1. Ascaris (Roundworm)
2. Taenia (Tapeworm)
3. Enterobius (Pinworm)
4. Ancylostoma (Hookworm)
5. Wuchereria (Filarial worm)
4. Is the NCERT Exemplar Class 11 Biology Chapter 4 solutions free of cost?
Yes, the NCERT Exemplar Solutions for Class 11 Biology Chapter 4 are completely free of cost.
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