Question

Class - 7th
Subject - Science (Biology)
Chapter- Transportation of materials
Board- CBSE
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1.Name the following.
(a)The transport system in animals - _______
(b) Components of circulatory system - ________
(c) Organ in the body with pumps blood - _______
(d) The channels in which blood flows - ________
(e) The blood vessels that take blood away from the heart♥️​ - _______
(f) The blood vessels that bring blood towards the heart♥️- _______
(g) Liquid part of blood- ______
(h) Different types of cells present in the blood - _______
(i) Red pigment present in the Red blood cells - ______
(j) The blood cell which help in clotting of blood- _______
(k) The process by which waste products are removed in single- celled organisms- ______
(l) Organs of excretory system in humans - _________


2. Define the following.
(a) Circulatory system-
(b) Heartbeat-
(c) pulse-
(d) Excretion-
(e) Excretory system-

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Answer 1

Heartbeat

A heartbeat is a two-part pumping action that takes about a second. As blood collects in the upper chambers (the right and left atria),.

pulse

pulse is your heart rate, or the number of times your heart beats in one minute. Pulse rates vary from person to person. Your pulse is lower when you are at rest and increases when you exercise (more oxygen-rich blood is needed by the body when you exercise).

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