Online Test — Transportation in Organisms
25 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 25
The carrying of materials to and from all the cells of the body is called:
Respiration
Transportation
Digestion
Excretion
Explanation: Transportation is the carrying of food, oxygen, and wastes to and from cells.
Question 2 of 25
Transportation in animals is carried out by the:
Digestive system
Circulatory system
Nervous system
Respiratory system
Explanation: The circulatory system carries materials around the animal body.
Question 3 of 25
The three main parts of the human circulatory system are blood, blood vessels, and the:
Lungs
Heart
Kidney
Brain
Explanation: The circulatory system consists of blood, blood vessels, and the heart.
Question 4 of 25
The circulatory system carries oxygen and food to cells and carries away:
Oxygen
Carbon dioxide and wastes
Food
Water only
Explanation: It removes carbon dioxide and other wastes from the cells.
Question 5 of 25
A tiny Amoeba does not need a transport system because materials:
Are not needed
Pass directly across its surface
Are made in its heart
Are stored in bones
Explanation: In a small Amoeba, materials pass directly in and out across its surface.
Question 6 of 25
The liquid part of blood that carries cells and dissolved substances is:
Plasma
Haemoglobin
Platelets
Serum cells
Explanation: Plasma is the pale yellow liquid part of blood that carries cells and substances.
Question 7 of 25
The red pigment in red blood cells that carries oxygen is:
Plasma
Haemoglobin
Chlorophyll
Insulin
Explanation: Haemoglobin in red blood cells binds and carries oxygen.
Question 8 of 25
Which blood cells help fight germs and protect against disease?
Red blood cells
White blood cells
Platelets
Plasma
Explanation: White blood cells fight germs and defend the body against infection.
Question 9 of 25
The blood component that helps blood to clot at a wound is the:
Plasma
Red blood cells
Platelets
Haemoglobin
Explanation: Platelets help the blood clot and stop bleeding at a wound.
Question 10 of 25
Red blood cells mainly carry which substance to the body's cells?
Carbon dioxide
Oxygen
Food
Water
Explanation: Red blood cells carry oxygen to the cells with the help of haemoglobin.
Question 11 of 25
The human heart has how many chambers?
Two
Three
Four
Five
Explanation: The human heart has four chambers — two atria and two ventricles.
Question 12 of 25
The two upper chambers of the heart are called the:
Ventricles
Atria
Valves
Arteries
Explanation: The two upper chambers that receive blood are the atria.
Question 13 of 25
The valves in the heart ensure that blood flows:
In both directions
In only one direction
Backward
In circles
Explanation: Valves prevent backflow, keeping blood moving in only one direction.
Question 14 of 25
The rhythmic contraction and relaxation of the heart is called the:
Pulse
Heartbeat
Breath
Reflex
Explanation: The rhythmic contraction and relaxation of the heart is the heartbeat.
Question 15 of 25
An adult human heart beats about how many times per minute at rest?
20–25
40–45
70–72
120–130
Explanation: A healthy adult heart beats about 70–72 times per minute at rest.
Question 16 of 25
Blood vessels that carry blood away from the heart are called:
Veins
Arteries
Capillaries
Valves
Explanation: Arteries carry blood away from the heart to the body parts.
Question 17 of 25
Vessels that carry blood back to the heart and contain valves are:
Arteries
Veins
Capillaries
Bronchi
Explanation: Veins carry blood back to the heart and have valves to prevent backflow.
Question 18 of 25
The exchange of materials between blood and body cells takes place in the:
Arteries
Veins
Capillaries
Heart
Explanation: Capillaries have walls one cell thick, where materials are exchanged.
Question 19 of 25
The throbbing of an artery felt at the wrist is called the:
Heartbeat
Pulse
Breath
Reflex
Explanation: The pulse is the throb of blood felt in an artery near the skin.
Question 20 of 25
The walls of arteries are thick and muscular because they carry blood at:
Low pressure
High pressure
No pressure
Equal pressure
Explanation: Arteries withstand the high pressure of blood pumped from the heart.
Question 21 of 25
The tissue that carries water and minerals in a plant is the:
Phloem
Xylem
Stomata
Cambium
Explanation: The xylem carries water and dissolved minerals upward in the plant.
Question 22 of 25
The tissue that carries food made in the leaves to other parts is the:
Xylem
Phloem
Root hair
Lenticel
Explanation: The phloem transports food (glucose) to all parts of the plant.
Question 23 of 25
Water is absorbed from the soil mainly by the:
Leaves
Root hairs
Stomata
Phloem
Explanation: Root hairs increase surface area and absorb water and minerals from the soil.
Question 24 of 25
The loss of water vapour from the leaves of a plant is called:
Transpiration
Respiration
Photosynthesis
Absorption
Explanation: Transpiration is the loss of water vapour, mainly through the stomata.
Question 25 of 25
The force that helps draw water up the xylem to tall treetops is the:
Heartbeat
Transpiration pull
Gravity
Pulse
Explanation: Transpiration pull is the suction that draws water up the xylem as water evaporates.