What is the role of diaphragm in breathing?
- ATo filter the air
- BTo produce sound
- ✓To hep in inhalation and exhalation
- DTo absorb oxygen
Answer: C.
View full solution →Question types
Life Processes in Animals question types
179 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
179
Questions
9
Question groups
5
Question types
01
MCQ (1 Marks)
34 Q→02Assertion (A) & Reason (B) MCQ
19 Q→03True False[1 Marks ]
10 Q→04Fill In The Blanks With Correct Alternative.[1 Marks Each]
11 Q→051 Marks Question
43 Q→062 Marks Questions
37 Q→073 Marks Question
12 Q→08Match the Following.
4 Q→095 Marks Questions
9 Q→Sample Questions
Life Processes in Animals questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The finger-like outgrowths of Amoeba help to ingest food. However, the finger-like outgrowths of the human intestine help to
- Adigest the fatty food substances
- Bmake the food soluble
- ✓absorb the digested food
- Dabsorb the undigested food.
Answer: C.
View full solution →What is the main function of the lungs in the respiratory system?
- APump blood
- BAbsorb nutrients
- ✓Exchange gases
- DDigest food
Answer: C.
View full solution →Given below from (i) to (iv) are some food items.
(i) Boiled and mashed potato
(ii) Glucose solution
(iii) A slice of bread
(iv) Mustard oil
Which of the above will give a blue-black colour when tested with iodine?
(i) Boiled and mashed potato
(ii) Glucose solution
(iii) A slice of bread
(iv) Mustard oil
Which of the above will give a blue-black colour when tested with iodine?
- A(i) and (ii)
- ✓(i) and (iii)
- C(ii) and (iii)
- D(iii) and (iv)
Answer: B.
View full solution →| Column A | Column B |
| 1. lodine solution | (A) Makes food easier to swallow |
| 2. Stomach | (B) Mechanical digestion |
| 3. Saliva | (C) Reacts with starch to give a blue-black color |
| 4. Mouth | (D) Breaks down proteins in the food |
- A(1)-(C), (2)-(D), (3)-(A), (4)-(B)
- B(1)-(B), (2)-(D), (3)-(C), (4)-(A)
- C(1)-(C), (2)-(A), (3)-(D), (4)-(B)
- ✓(1)-(C), (2)-(D), (3)-(B), (4)-(A)
Answer: D.
View full solution →Assertion (A): Oxygen is the final product of respiration.
Reason (R): Respiration produces water, carbon dioxide, and energy.
Reason (R): Respiration produces water, carbon dioxide, and energy.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true, but R is not the correct explanation of A.
- CA is true, but R is false.
- ✓A is false, but R is true.
Answer: D.
View full solution →Assertion(A): Inhalation is caused by the expansion of the chest cavity.
Reason (R): The diaphragm contracts during inhalation.
Reason (R): The diaphragm contracts during inhalation.
- ✓Both A and R are true and R is the correct explanation of A.
- BBoth A and R are true, but R is not the correct explanation of A.
- CA is true, but R is false.
- DA is false, but R is true.
Answer: A.
View full solution →Assertion (A): The pancreas is part of the respiratory system.
Reason (R): The pancreas produces pancreatic juice that is basic in nature.
Reason (R): The pancreas produces pancreatic juice that is basic in nature.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true, but R is not the correct explanation of A.
- CA is true, but R is false.
- ✓A is false, but R is true.
Answer: D.
View full solution →Assertion (A): The oesophagus is involved in gas exchange.
Reason (R): The oesophagus connects the mouth to the stomach.
Reason (R): The oesophagus connects the mouth to the stomach.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true, but R is not the correct explanation of A.
- CA is true, but R is false.
- ✓A is false, but R is true.
Answer: D.
View full solution →Assertion (A): Churning of food takes place in the stomach.
Reason (R): The walls of the stomach contract and relax to churn the food.
Reason (R): The walls of the stomach contract and relax to churn the food.
- ✓Both A and R are true and R is the correct explanation of A.
- BBoth A and R are true, but R is not the correct explanation of A.
- CA is true, but R is false.
- DA is false, but R is true.
Answer: A.
View full solution →The ribcage protects our lungs.
We should always breathe through the mouth and not the nose. The ribcage protects our lungs.
The large intestine is longer and broader than the small intestine of the human alimentary canal.
The ruminants bring back swallowed grass into their mouth and chew it for some time.
Digestion of starch starts in the stomach.
The final stage of digestion, where undigested material is removed, is called _______ .
The contraction and relaxation of the _______ helps in breathing.
The body part where undigested food is stored temporarily before being removed is the _______ .
The _______ system is responsible for taking in oxygen and removing carbon dioxide from the body.
The long tube that carries food from the mouth to the stomach is called the _______ .
Yadu conducted an experiment to test his idea. He took two test tubes, A and B, and added a pinch of rich flour to the test tubes half-filled with water and stirred them properly. To test tube B, he added a few drops of saliva. He left the two test tubes for 35-45 min. After that, he added iodine solution into both the test tubes. Experimental results are as shown in Fig. What do you think he wants to test?
Paridhi and Anusha of Grade 7 started running for their morning workout. After they completed their running, they counted their breaths per minute. Anusha was breating faster than Paridhi. Provide at least two possible explanations for why Anusha was breathing faster than Paridhi.
Which of the following statement is correct and why?
Anu: We inhale air.
Shanu: We inhale oxygen.
Tanu: We inhale air rich in oxygen.
Anu: We inhale air.
Shanu: We inhale oxygen.
Tanu: We inhale air rich in oxygen.
Complete the journy of food through the alimentary canal by filling up the boxes with appropriate parts
Which organ forms two branches that enter the lungs?
We often sneeze when we inhale a lot of dust-laden air. What can be possible explanations for this?
What is the role of the diaphragm in breathing?
(i) To help in inhalation and exhalation
(ii) To absorb oxygen
(i) To help in inhalation and exhalation
(ii) To absorb oxygen
What is the role of the diaphragm in breathing?
(i) To fi lter the air
(ii) To produce sound
(i) To fi lter the air
(ii) To produce sound
Rakshita designed an experiment taking two clean test tubes, A and B and filled them with lime water as shown in the figure. In test tube A, the surrounding air that we inhale was passed on by sucking air from the pipe, and in test tube B, the exhaled air was blown through the pipe (Fig.). What do you think she is trying to investigate? How can she confirm her findings?
What is the difference between breathing and respiration?
Anil claims to his friend Sanvi that respiration and breathing are the same process. What question(s) Sanvi ask him to make him understand that he is not correct?
Sahil placed some pices of chapati in test tube A. Neha placed chewed chapati in test tube B, and Santushti took boiled and mashed potato in test tube C. All of them added a few drops of iodine solution to their test tubes A, B, and C, respectively. What would be their observations? Give reasons.
Explain the digestive system of a human being with the help of a labelled diagram.
Explain how the exchange of gases occurs in human beings.
In a health awareness seminar, students learned that smoking affects the lungs by damaging the alveoli and reducing their surface area. This makes breathing difficult and reduces the amount of oxygen absorbed into the blood.
(i) Which part of the lungs gets damaged by smoking?
(ii) What happens when the alveoli are damaged?
(iii) Why is smoking dangerous for health?
(i) Which part of the lungs gets damaged by smoking?
(ii) What happens when the alveoli are damaged?
(iii) Why is smoking dangerous for health?
| Name of the part | Functions |
| Q.1. Nostrils | A. fresh air from outside enters |
| Q.2. Nasal passages | B. exchange of gases occurs |
| Q.3. Windpipe | C. protects lungs |
| Q.4. Alveoli | D. tiny hair and mucus help to trap dust and dirt from the |
| E. air we breathe air reaches our lungs through this part |
| Column I | Column II |
| Q.1. Lungs | A. Site for gas exchange |
| Q.2. Alveoli | B. Helps in breathing |
| Q.3. Diaphragm | C. Breathing organs of fish |
| Q.4. Gills | D. Tiny air sacs in lungs |
| Column I | Column II |
| Q.1. Small intestine | A. Produces bile |
| Q.2. Large intestine | B. Produces pancreatic juice |
| Q.3. Stomach | C. Absorbs nutrients |
| Q.4. Liver | D. Absorbs water |
| Column A | Column B |
| Q.1. Gills | (a) Helps in breathing |
| Q.2. Pancreas | (b) Stores undigested food |
| Q.3. Rectum | (c) Gas exchange in lungs |
| Q.4. Alveoli | (d) Exchange of gases in fish |
| (e) Secretes digestive enzymes |
With the help of a diagram, explain the percentage of oxygen and carbon dioxide in inhaled and exhaled air.
Explain the mechanism of breathing with the help of a diagram.
Explain the mechanism of breathing with a model.
Differentiate between breathing and respiration.
Describe how the pancreas and liver help in digestion.
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