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SAI International School
Subject- Biology, Class-VII
Topic- Transportation and Excretion
Subtopic- The Structure of Heart
Module- 19
Home Assignment- II
Worksheet-1

Q. No. Questions
Q1. The absorption of nutrients and exchange of respiratory gases between blood
and tissues take place in -
(a) veins
(b) arteries
(c) heart
(d) capillaries

Q2. The heart is enclosed by a double-walled sac called_____________.

Q3. Match the following -
Column I Column II
1. Heart i. Amoeba-like movement
2. WBC ii. Cardiac muscles.
3. Oxygen iii. Blood loss
4. Haemophilia iv. Haemoglobin

(a) 1- i, 2- ii , 3- iii, 4- iv
(b) 1- ii, 2- i, 3- iv, 4- iii
(c) 1- iv, 2- iii, 3- ii, 4- i
(d) 1- iii, 2- iv, 3- i, 4- ii

Q4. Choose the correct option from the following:
(a) If both Assertion and Reason are correct and Reason is the correct
explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct
explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If Assertion is incorrect but Reason is correct.

Assertion (A): RBCs helps our body to fight diseases.
Reason (R): RBCs are produced in our bone marrow.

Q5. Choose the correct option from the following:
(a) If both Assertion and Reason are correct and Reason is the correct
explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct