Transport Systems

Question 1

What are transport systems in living things

Answer 1

The transport systems in humans and plants are made of different parts that have specific functions. They work together to transport substances around a human or plant

Question 2

What is the human transport system made up of

Answer 2

heart, blood, blood vessels

Question 3

What makes up the blood in humans

Answer 3

Red blood cells, Plasma, white blood cells and platelets

Question 4

What is the function of red blood cells

Answer 4

1. They transport oxygen to different parts of the body
2. Millions of them make up each drop and make the blood red

Question 5

What is the function of Plasma

Answer 5

1. It transports water and dissolved substances (digested food, mineral salts and waster products) to different parts of the body
2. Makes up more than half of the volume of blood

Question 6

What do white blood cells and Platelets do

Answer 6

They serve protective functions

Question 7

What are the blood vessels in the human system

Answer 7

Ateries, veins, capillaries

Question 8

What is the function of the artery

Answer 8

Carries away blood rich in oxygen and DF from the heart

Question 9

What is the function of the veins

Answer 9

1. Carries blood poor in oxygen and rich in Co2 and waste materials towards the heart.
2. The blood returned is pumped the lungs to receive a fresh supply of oxygen)

Question 10

What is the tubes of the plant

Answer 10

Xylem and Phloem

Question 11

What is the function of the capillary

Answer 11

1. It acts as the exchange site of substances (digestive food, water, gas etc)
2. They are the smallest most numerous blood vessels
3. It transport blood from the arteries to the cells and carries away blood from the veins to function effectively

Question 12

What is the function of the xylem

Answer 12

It transports water and mineral salts from the roots to all parts of the plant (upward direction)

Question 13

What is the function of the phloem

Answer 13

It transports sugar from the leaves to all parts of the plant (upward/downward)

Question 14

Why do multicellular organisms need a transport system

Answer 14

A transport allows substances to be transported quickly in the organisms. Without one, cells would die of starvation and poison themselves from their own waste products

Question 15

Why do unicellular organism not need transport systems

Answer 15

DF, oxygen and waste materials can be carried to cells where needed or removed from the organisms in a short time.

Question 16

What is diffusion

Answer 16

Diffusion is the net movement of particles from a region of higher concentration to a region of lower concentration.

Question 17

How does diffusion occur in a human

Answer 17

1. DF and oxygen is of a higher concentration in the blood compared to the surrounding tissues
2. They leave the capillaries through diffusion and enter the tissues
3. Co2 also leaves the tissue through diffusion, they diffuse into the capillaires and are carried away

Question 18

How does diffusion occur in leaves

Answer 18

1. Through the stomata, oxygen diffuses through the leave where it has a higher concentration to the air of lower concentration
2. Co2 diffuses from the air where it is of higher concentration to within the leaf of lower concentration

Question 19

how does diffusion occur in the roots

Answer 19

1. Dissolved mineral salts in the water diffuses into the rootcell of lower concentration
2. The mineral salts diffuse from the roots to the xylem of lower concentration
3. The mineral salts are then transported to the other parts of the plant

Question 20

What is osmosis

Answer 20

A process by which water molecules pass through a semi-permeable membran