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Chennai Public School: Answer The Following 1

This document is a biology worksheet for Class X students at Chennai Public School, dated April 17, 2025. It contains questions related to human blood circulation, including identification of blood vessels, heart functions, and components of the circulatory system. The worksheet aims to assess students' understanding of the circulatory system and its functions.

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8 views3 pages

Chennai Public School: Answer The Following 1

This document is a biology worksheet for Class X students at Chennai Public School, dated April 17, 2025. It contains questions related to human blood circulation, including identification of blood vessels, heart functions, and components of the circulatory system. The worksheet aims to assess students' understanding of the circulatory system and its functions.

Uploaded by

6b08.joshitha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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CHENNAI PUBLIC SCHOOL

Anna Nagar  Chennai 600 101 

CLASS : X DATE: 17.04.25


SUBJECT : BIOLOGY WORKSHEET - 2

ANSWER THE FOLLOWING

1. The figure given below shows a schematic plan of blood

circulation in humans with labels (i) to (iv). Identify the correct

label with its functions?

(a) (i) Pulmonary vein - takes impure blood from body part.

(b) (ii) Pulmonary artery - takes blood from lung to heart.

(c) (iii) Aorta - takes blood from heart to body parts.

(d) (iv) Vena cava takes - blood from body parts to right auricle

2. Identify the phase of circulation which is represented in the


diagram of heart given below. Arrows indicate contraction of
the chambers shown.
a)Blood transferred to the right ventricle and left ventricle
simultaneously.
(b)Blood is transferred to lungs for oxygenation and is pumped
into various organs simultaneously.
(c)Blood transferred to the right auricle and left auricle
simultaneously.
(d)Blood is received from lungs after oxygenation and is
received from various organs of the body
3. What prevents backflow of blood inside the heart during
contraction?
(a) Valves in heart (b) Thick muscular walls of
ventricles
(c) Thin walls of atria (d) All of the above
4. The only artery which carries deoxygenated blood is:
a. Pulmonary artery b. Renal artery
c. Hepatic artery d. Coronary artery
5. How many chambers does a frog’s heart have?
a. 1 b. 2 c. 3 d. 4
6. Oxygenated blood reaches heart by
a. Pulmonary artery b. Pulmonary vein
c. Aorta d. Vena cava
7. Which of the following substances is transported by blood
plasma?
a. Food b. Potassium c. Alcohol d. All of these
8. In humans, right auricle receives______ blood from ______
a. Oxygenated, aorta b. Deoxygenated, vena cava
c. Oxygenated, vena cava d. Deoxygenated, aorta
9. Veins have valves to
a. Prevent back flow of blood
b. Prevent the collapse of the vein
c. Maintain its position in the body
d. None of these
10. Where does the maximum exchange of material between blood
and surrounding cells occur?
a. Heart b. Veins c. Arteries d. Capillaries
11. What are the types of substances transported by the

circulatory system?

12. What are the two types of circulatory systems in a man?. Give

brief on each of them?

13. What are the three components of circulatory system in man?

14. What is blood made up of?

15. What is the main function of the red blood cells?

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