Curiosity Class 7 Science Chapter 9 Life Processes in Animals Case Study Questions

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Last Updated on May 7, 2025 by XAM CONTENT

Hello students, we are providing case study questions for class 7 Science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 7 Science. In this article, you will find case study questions for cbse class 7 Science chapter 9 Life Processes in Animals.

Chapter	Life Processes in Animals
Book	Curiosity: Textbook of Science for Grade 7
Type of Questions	Case Study Questions
Nature of Questions	Competency Based Questions
Board	CBSE
Class	7
Subject	Science
Useful for	Class 7 Studying Students
Answers provided	Yes
Difficulty level	Mentioned
Important Link	Class 7 Science Chapterwise Case Study

Table of Contents

Customised Study Materials for Teachers, Schools and Coaching Institute

Case Study Questions on Life Processes in Animals

Case Study Question 1:

Passage: Journey of Food in the Human Body

In a classroom activity, students discussed how food travels through the human digestive system. Their teacher explained that digestion starts in the mouth with saliva, continues in the stomach where proteins are broken down, and is completed in the small intestine with the help of bile and pancreatic juice. The digested nutrients are absorbed through villi, and the undigested part moves to the large intestine for water absorption and eventual excretion.

Q1. Where does the digestion of starch begin in the human body?
(a) Stomach
(b) Mouth
(c) Liver
(d) Small intestine

Answer: (b)
Difficulty Level: Moderate
Explanation: Saliva in the mouth contains amylase which begins the digestion of starch.

Q2. What is the function of villi in the small intestine?
(a) Secretion of digestive enzymes
(b) Absorption of nutrients
(c) Storage of food
(d) Removal of waste

Answer: (b)
Difficulty Level: Easy
Explanation: Villi increase surface area for absorbing nutrients into the blood.

Q3. Which organ secretes bile?
(a) Pancreas
(b) Stomach
(c) Liver
(d) Gallbladder

Answer: (c)
Difficulty Level: Easy
Explanation: Bile is produced in the liver and stored in the gallbladder.

Q4. What happens in the large intestine?
(a) Digestion of proteins
(b) Absorption of nutrients
(c) Water absorption from undigested food
(d) Mixing of enzymes

Answer: (c)
Difficulty Level: Moderate
Explanation: The large intestine absorbs water and forms solid waste.

Case Study Question 2:

Passage: An Experiment with Chewed Rice

In an experiment, students placed boiled rice in two test tubes. In one tube, the rice was chewed before placing. Iodine was added to both. The unchewed rice turned blue-black, but the chewed one did not. This experiment showed that saliva breaks down starch into sugar, hence no starch was left to react with iodine in the second test tube.

Q1. What does the blue-black colour in the test tube indicate?
(a) Presence of protein
(b) Presence of sugar
(c) Presence of starch
(d) Presence of fat

Answer: (c)
Difficulty Level: Easy
Explanation: Iodine reacts with starch to give a blue-black colour.

Q2. Why didn’t the chewed rice turn blue-black with iodine?
(a) It had less iodine
(b) Saliva converted starch to sugar
(c) It contained protein
(d) It was overcooked

Answer: (b)
Difficulty Level: Moderate
Explanation: Enzymes in saliva converted the starch to sugar, which does not react with iodine.

Q3. Which enzyme in saliva helps break down starch?
(a) Lipase
(b) Pepsin
(c) Amylase
(d) Trypsin

Answer: (c)
Difficulty Level: Moderate
Explanation: Amylase breaks down starch into simpler sugars in the mouth.

Q4. What is the conclusion of the experiment with chewed rice and iodine?
(a) Starch is produced in the mouth
(b) Chewing rice increases its starch
(c) Saliva begins digestion of starch
(d) Iodine turns red in presence of sugar

Answer: (c)
Difficulty Level: Tough
Explanation: The experiment confirms that starch digestion starts in the mouth due to saliva.

We hope the given case study questions for Life Processes in Animals Class 7 helps you in your learning.

🎮 Bonus Challenge: Can You Solve This Scientific Mystery?

🧠 Solve the Mystery: Inside the Body of Life

From digestion to respiration, and circulation to elimination—our body is a wonderful machine with many systems working together!

Can you help solve the mystery behind the journey of food, air, and energy inside your body?

Also check

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Topics from which case study questions may be asked

Digestive system
Respiration
Circulatory system

Our body performs vital processes continuously to keep us alive.

Frequently Asked Questions (FAQs) on Life Processes in Animals Case Study Questions

Q1: What are case study questions in Life Processes in Animals?

A1: These are competency-based questions based on real-life situations and concepts from Life Processes in Animals.

Q2: Are case study questions part of Class 7 Science CBSE exams?

A2: Yes, CBSE includes such questions in line with NEP guidelines.

Q3: How can I practice Class 7 case study questions?

A3: Practice from chapterwise question banks and NCERT-integrated sources.

Q4: Are answers provided for Life Processes in Animals case study questions?

A4: Yes, each case study question includes an answer.