NCERT Solutions for Class 11 Biology Chapter 7 - Structural Organisation in Animals

Edited By Irshad Anwar | Updated on Aug 11, 2025 12:38 PM IST

The NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals explain the structure of different animals. This chapter mainly focuses on the working of the organ systems of the frog. It includes the digestive system, respiratory system, excretory system, and reproductive system. Well-labeled diagrams of all the organ systems are also added. By following the NCERT solutions, students can answer the difficult questions easily during exams.

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Download PDF of Class 11 Biology Chapter 7 Solutions
Access to Class 11 Biology Chapter 7 Solutions (Exercise Questions)
Class 11 Biology Structural Organisation in Animals(Practice Questions)
Approach to Solve Class 11 Biology Chapter 7 Question Answers
Important Question from Class 11 Biology Chapter 7 Solutions
What Extra Should Students Study Beyond the NCERT for NEET?
NCERT Solutions for Class 11 Biology - Chapter Wise

NCERT Solutions for Class 11 Biology Chapter 7 - Structural Organisation in Animals

Structural Organisation in Animals Class 11 NCERT Solutions discusses the external and internal structure of animals. All the answers are explained in easy and clear language by subject experts. Students will understand how different systems work together to perform functions. They can also download the NCERT Solutions for Class 11 Biology Chapter 7 PDF. This allows them to score well in school exams and in competitive exams like NEET.

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Download PDF of Class 11 Biology Chapter 7 Solutions

Students can easily download the PDF of the structural organisation in animals chapter. This PDF can be used offline anytime, anywhere, without needing the internet. The NCERT Solutions Class 11 are written in simple language to help students understand the topic clearly. They are perfect for daily study and quick revision before exams.

Download PDF

Access to Class 11 Biology Chapter 7 Solutions (Exercise Questions)

Given below are the detailed answers to all the textbook questions. This helps students understand how animals are organized, from tissues to organs. Practicing these Class 11 Biology Chapter 7 question answers improves problem-solving skills.

Q1. Draw a neat diagram of the digestive system of a frog.

Answer:

The diagram of the digestive system of a frog is given below.

digestive system of frog

Q2. Mention the function of the ureters in frogs.

Answer:

Both male and female frogs have a pair of testes and a pair of ovaries as their reproductive organs. In frogs, the reproductive organs of males and females are attached to their kidneys. Hence, the ureter in frogs is known as the urogenital part. In male frogs, the testes release sperm, and the Malpighian tubules release urine to their ureter. Then, the ureter delivers the sperm to the cloaca.

Class 11 Biology Structural Organisation in Animals(Practice Questions)

Q.1. Describe the external features of a frog, including its skin, limbs, and eyes.

Answer:

Frogs' skin is smooth, moist, and slimy due to mucus secretion, which helps them in respiration and camouflage. The animal has 2 pairs of limbs, with hindlimbs being long and muscular for jumping and swimming, while the forelimbs help to maintain balance. Their eyes are large, bulging, and have a nictitating membrane utilised for protection and vision. Their eyes are positioned on the sides of the head, which gives them a wide field of view and helps in swallowing food.

morphology of frog

Q.2. Explain the different types of respiration in frogs, including cutaneous, pulmonary, and buccopharyngeal respiration.

Answer:

Frogs can perform three different types of respiration: cutaneous, pulmonary, and buccopharyngeal. Cutaneous respiration occurs through the moist skin, which allows gas exchange in both water and air. Pulmonary respiration can occur with the help of the lungs for breathing on land. Buccopharyngeal respiration can occur through the moist lining of the buccal cavity, helping gas exchange when the mouth is closed underwater.

Q.3. Compare and contrast the male and female frog reproductive systems, including the presence of vocal sacs and copulatory pads.

Answer:

Male and female frogs have distinctive reproductive features. Males have vocal sacs, which can amplify mating calls. The copulatory pads on their forelimbs help in gripping the female during copulation. Females do not have either of them but have larger ovaries that produce eggs. Both sexes have paired gonads, where males produce sperm while females produce eggs for external fertilization.

reproductive system of frog

Q.4. Discuss the functions of the frog's heart and circulatory system.

Answer:

Frogs have a three-chambered heart, having two atria and one ventricle, which helps them to separate oxygenated and deoxygenated blood. They perform double circulation, which means blood passes through the heart twice in one complete cycle. These circulations help transport oxygen, nutrients, and waste throughout the body. Frogs oxygenate their tissues by doing both aquatic and terrestrial respiration.

circulatory system of frog

Q.5. Explain the adaptations of the frog's digestive system for a carnivorous diet.

Answer:

Frogs have a short digestive system adapted well for their carnivorous diet, which consists of insects and small invertebrates. Their tongue is long, sticky, and attached at the front, which allows them to catch prey. Their teeth help grip food, and digestion begins in the stomach, where the enzymes break down proteins. A short intestine allows the absorption of nutrients, and the liver produces bile to help in fat digestion. The cloaca finally helps in excreting waste efficiently.

NCERT Solutions for Class 11: Subject-wise

Approach to Solve Class 11 Biology Chapter 7 Question Answers

A few points are listed below, which students can follow to solve questions effectively from this chapter.

Students need to learn the digestive, respiratory, and circulatory systems of a frog. They can prepare flowcharts to remember the sequence of organs.
Try to focus on diagrams and labeling in frog anatomy, as they are asked in the exam. All diagrams are included in the Structural Organisation in Animals Class 11 NCERT Solutions.
Practice by writing short and clear answers for topics like morphology and the nervous system.
Go through the NCERT Solutions for Class 11 Biology Chapter 7 PDF line by line. Revise each topic thoroughly before the exams.
Students can refer to the NCERT Solutions Class 11 Biology to understand how questions are framed in the exam.
Solve previous years' questions to get the confidence to score better marks in the exam.

Also, Check the NCERT Books and NCERT Syllabus here:

Important Question from Class 11 Biology Chapter 7 Solutions

Provided below is an important question from this chapter, along with the answer. To gain clarity about the concepts, it is important to solve questions. For this purpose, students can refer to the Structural Organisation in Animals Class 11 NCERT Solutions.

Question 1: What role does the glottis play in frog respiration?

Options:

It allows for the entry of air into the lungs.
It controls the opening and closing of the nostrils.
It aids in vocalization and sound production.
It helps in the regulation of body temperature.

Answer:

The glottis is a small opening located at the back of the oral cavity in frogs. It serves as the entrance to the respiratory system. When a frog breathes, the glottis opens, allowing air to enter the lungs. This air passes through the buccal cavity, where gas exchange occurs across the moist lining, and then continues into the lungs for further gas exchange. After oxygen is extracted from the air in the lungs, carbon dioxide is expelled from the body through the same pathway. So, the glottis plays a crucial role in facilitating the entry of air into the frog's lungs, enabling respiration to occur.

Hence, the correct answer is option 1), It allows for the entry of air into the lungs.

What Extra Should Students Study Beyond the NCERT for NEET?

Below is a table showing the important topics students should study beyond the NCERT. These topics match their preparation with the NEET syllabus. Referring to Structural Organisation in Animals Class 11 NCERT Solutions supports overall understanding.

Topics	NCERT	NEET
Morphology of a Frog	✅	✅
Digestive System of the Frog	✅	✅
Respiratory System in Frogs	✅	✅
Reproduction and Development in Frogs	✅	✅
Circulatory System in Frogs	✅	✅
Sense Organs in the Frog	✅	✅
Excretory System in the Frog	✅	✅
Control and Coordination in the Frog	✅	✅

NCERT Solutions for Class 11 Biology - Chapter Wise

Explore detailed, chapter-wise answers to help you understand concepts clearly and strengthen your biology fundamentals.

NCERT Solutions for Class 11 Chapter 1 Biology The Living World

NCERT Solutions for Class 11 Chapter 2 Biology Biological Classification

NCERT Solutions for Class 11 Chapter 3 Biology Plant Kingdom

NCERT Solutions for Class 11 Chapter 4 Biology Animal Kingdom

NCERT Solutions for Class 11 Chapter 5 Biology Morphology of Flowering Plants

NCERT Solutions for Class 11 Chapter 6 Biology Anatomy of Flowering Plants

NCERT Solutions for Class 11 Chapter 7 Biology Structural Organisation in Animals

NCERT Solutions for Class 11 Chapter 8 Biology Cell: The Unit of Life

NCERT Solutions for Class 11 Chapter 9 Biology Biomolecules

NCERT Solutions for Class 11 Chapter 10 Biology Cell Cycle and Cell Division

NCERT Solutions for Class 11 Chapter 11 Biology Photosynthesis in Higher Plants

NCERT Solutions for Class 11 Chapter 12 Biology Respiration in Plants

NCERT Solutions for Class 11 Chapter 13 Biology Plant Growth and Development

NCERT Solutions for Class 11 Chapter 14 Biology Breathing and Exchange of Gases

NCERT Solutions for Class 11 Chapter 15 Biology Body Fluids and Circulation

NCERT Solutions for Class 11 Chapter 16 Biology Excretory Products and their Elimination

NCERT Solutions for Class 11 Chapter 17 Biology Locomotion and Movement

NCERT Solutions for Class 11 Chapter 18 Biology Neural Control and Coordination

NCERT Solutions for Class 11 Chapter 19 Biology Chemical Coordination and Integration

Frequently Asked Questions (FAQs)

1. How many types of tissues are there in animals according to NCERT Class 11 Biology?

According to the NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals, there are 4 major types of tissue: Epithelial tissue, connective tissue, muscular tissue, and nervous tissue.

2. What are the benefits of NCERT solutions for class 11 biology chapter 7?

You will get all the answers given in the textbook, which will help you score good marks in the exam.
NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals will also help you with competitive exams like NEET.
These solutions will also boost your knowledge.
NCERT Solutions for Class 11 Biology Chapter 7 PDF will also help you in your 12th board exam.
To score well in the examination, follow the NCERT syllabus and solve the questions given in the NCERT Exemplar.

3. What are the important topics of CBSE NCERT solutions for class 11 biology chapter 7?

The important topics included in the NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals are morphology and anatomy of frogs.

4. What are the key differences between simple and complex epithelial tissues?

The key differences lie in the tissue layers: the simple tissue has 1 layer of tissue while complex tissue has multiple layers.

5. What are the functions of connective tissue in animals?

Connective tissue supports connecting or separating other tissues or organs of the body. They are the most abundant tissue types such as bone, blood and cartilage.

Also Read

NCERT Solutions For Class 11 Biology Chapter 6 - Anatomy of Flowering Plants

NCERT Solutions for Class 11 Biology Chapter 5 - Morphology of Flowering Plants

NCERT Solutions for Class 11 Biology Chapter 4 - Animal Kingdom

NCERT Solutions for Class 11 Biology Chapter 8 - Cell The Unit of Life

NCERT Solutions for Class 11 Biology Chapter 7 - Structural Organisation in Animals

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