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

Morphology and anatomy of various animal systems, with a special focus on the frog, are provided in the NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals. This chapter is important for understanding the workings of different organ systems, such as the digestive system, respiratory system, vascular system, excretory system, and reproductive system, along with their anatomy, to maintain life. Using NCERT solutions, students can practice various other questions for a better understanding.

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This Story also Contains

1. NCERT Solutions PDF For Class 11 Biology: Structural Organisation in Animals
2. Find NCERT Solutions for Class 11 Biology Chapter 7: Solved Exercise
3. Class 11 Biology Structural Organisation in Animals- Practice Questions
4. Important Question from Chapter 7 Structural Organization in Animals
5. Approach to Solve Questions of Class 11 Chapter 7
6. What Extra Should Students Study Beyond the NCERT for NEET?
7. NCERT Solutions for Class 11 Biology - Chapter Wise

Referring to the NCERT Solutions Class 11 Biology Structural Organisation in Animals allows students to understand the concepts clearly and easily. Additionally, the explanations help students answer textbook questions effectively. This article discusses the external and internal structures of animals, with a special focus on frogs. By using NCERT Solutions Class 11, students can answer difficult questions and improve their conceptual understanding. The biology answers provide step-by-step explanations to remember key ideas about how different systems work together to maintain body functions.

NCERT Solutions PDF For Class 11 Biology: Structural Organisation in Animals

Students can download the PDF from the link below. Practicing the exercise questions is useful and helps to score better in board exams.

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Also Read,

• NCERT Notes for class 11 biology Structural Organisation in animals
• NCERT Exemplar for class 11 biology structural organisation in animals

Find NCERT Solutions for Class 11 Biology Chapter 7: Solved Exercise

Given below are the detailed answers that will help students to clearly understand how animals are structurally organized, from tissues to organ systems.

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.

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.

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, that 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.

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, 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: Subjectwise

Important Question from Chapter 7 Structural Organization in Animals

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

Options:

1. It allows for the entry of air into the lungs.

2. It controls the opening and closing of the nostrils.

3. It aids in vocalization and sound production.

4. 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.

Also, Check the NCERT Books and NCERT Syllabus here:

• NCERT Books Class 11 Biology
• NCERT Syllabus Class 11 Biology
• NCERT Books Class 11
• NCERT Syllabus Class 11

Approach to Solve Questions of Class 11 Chapter 7

A few points are listed here, by which students can solve the questions from this chapter easily and effectively.

• Students need to learn the digestive, respiratory, and circulatory systems of a frog with flowcharts to remember the sequence.
• Try to focus on diagrams and labeling in frog anatomy, as they are asked about many times in the exam.
• Practice by writing short and clear answers for topics like morphology and the nervous system.
• Go through the NCERT line by line and revise each topic thoroughly.
• Students are advised not to skip the in-text and exercise questions because they help in understanding how questions are framed in the exam.
• Solve previous years' questions to get the confidence of scoring better marks in the exam.

What Extra Should Students Study Beyond the NCERT for NEET?

Below is a table highlighting the most important topics that students need to study apart from the NCERT to match their preparation with the NEET syllabus.

NCERT Solutions for Class 11 Biology - Chapter Wise

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