Vidaara.orgClass 7 · Mathematics
CodeVID-M7-WS
Transportation in Organisms — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
25 × 1 = 25 marks
1.
The carrying of materials to and from all the cells of the body is called:
- A.Respiration
- B.Transportation
- C.Digestion
- D.Excretion
2.
Transportation in animals is carried out by the:
- A.Digestive system
- B.Circulatory system
- C.Nervous system
- D.Respiratory system
3.
The three main parts of the human circulatory system are blood, blood vessels, and the:
- A.Lungs
- B.Heart
- C.Kidney
- D.Brain
4.
The circulatory system carries oxygen and food to cells and carries away:
- A.Oxygen
- B.Carbon dioxide and wastes
- C.Food
- D.Water only
5.
A tiny Amoeba does not need a transport system because materials:
- A.Are not needed
- B.Pass directly across its surface
- C.Are made in its heart
- D.Are stored in bones
6.
The liquid part of blood that carries cells and dissolved substances is:
- A.Plasma
- B.Haemoglobin
- C.Platelets
- D.Serum cells
7.
The red pigment in red blood cells that carries oxygen is:
- A.Plasma
- B.Haemoglobin
- C.Chlorophyll
- D.Insulin
8.
Which blood cells help fight germs and protect against disease?
- A.Red blood cells
- B.White blood cells
- C.Platelets
- D.Plasma
9.
The blood component that helps blood to clot at a wound is the:
- A.Plasma
- B.Red blood cells
- C.Platelets
- D.Haemoglobin
10.
Red blood cells mainly carry which substance to the body's cells?
- A.Carbon dioxide
- B.Oxygen
- C.Food
- D.Water
11.
The human heart has how many chambers?
- A.Two
- B.Three
- C.Four
- D.Five
12.
The two upper chambers of the heart are called the:
- A.Ventricles
- B.Atria
- C.Valves
- D.Arteries
13.
The valves in the heart ensure that blood flows:
- A.In both directions
- B.In only one direction
- C.Backward
- D.In circles
14.
The rhythmic contraction and relaxation of the heart is called the:
- A.Pulse
- B.Heartbeat
- C.Breath
- D.Reflex
15.
An adult human heart beats about how many times per minute at rest?
- A.20–25
- B.40–45
- C.70–72
- D.120–130
16.
Blood vessels that carry blood away from the heart are called:
- A.Veins
- B.Arteries
- C.Capillaries
- D.Valves
17.
Vessels that carry blood back to the heart and contain valves are:
- A.Arteries
- B.Veins
- C.Capillaries
- D.Bronchi
18.
The exchange of materials between blood and body cells takes place in the:
- A.Arteries
- B.Veins
- C.Capillaries
- D.Heart
19.
The throbbing of an artery felt at the wrist is called the:
- A.Heartbeat
- B.Pulse
- C.Breath
- D.Reflex
20.
The walls of arteries are thick and muscular because they carry blood at:
- A.Low pressure
- B.High pressure
- C.No pressure
- D.Equal pressure
21.
The tissue that carries water and minerals in a plant is the:
- A.Phloem
- B.Xylem
- C.Stomata
- D.Cambium
22.
The tissue that carries food made in the leaves to other parts is the:
- A.Xylem
- B.Phloem
- C.Root hair
- D.Lenticel
23.
Water is absorbed from the soil mainly by the:
- A.Leaves
- B.Root hairs
- C.Stomata
- D.Phloem
24.
The loss of water vapour from the leaves of a plant is called:
- A.Transpiration
- B.Respiration
- C.Photosynthesis
- D.Absorption
25.
The force that helps draw water up the xylem to tall treetops is the:
- A.Heartbeat
- B.Transpiration pull
- C.Gravity
- D.Pulse
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Transportation
- (B) Circulatory system
- (B) Heart
- (B) Carbon dioxide and wastes
- (B) Pass directly across its surface
- (A) Plasma
- (B) Haemoglobin
- (B) White blood cells
- (C) Platelets
- (B) Oxygen
- (C) Four
- (B) Atria
- (B) In only one direction
- (B) Heartbeat
- (C) 70–72
- (B) Arteries
- (B) Veins
- (C) Capillaries
- (B) Pulse
- (B) High pressure
- (B) Xylem
- (B) Phloem
- (B) Root hairs
- (A) Transpiration
- (B) Transpiration pull
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