b4- organising plants and animals

Question 1

what does plasma carry?

Answer 1

red blood cells
white blood cells
platelets

Question 2

what makes up the human circulatory system?

Answer 2

blood
blood vessels
heart

Question 3

what do red blood cells contain?

Answer 3

haemoglobin

Question 4

what does haemoglobin do?

Answer 4

binds to oxygen to transport it from the lungs to the tissues

Question 5

what do white blood cells do?

Answer 5

help protect the body from infection

Question 6

what are platelets?

Answer 6

cell fragments that start the clotting process at wound sites

Question 7

what are the main types of blood vessels?

Answer 7

arteries
veins
capillaries

Question 8

how do substances diffuse in and out of the blood?

Answer 8

in the capillaries

Question 9

how does blood pump in the right direction?

Answer 9

valves

Question 10

what does the alveoli provide?

Answer 10

a large surface area and a rich supply of capillaries

Question 11

what does xylem tissue transport?

Answer 11

water and mineral ions from roots to leaves

Question 12

what does phloem tissue transport?

Answer 12

dissolved sugars from the leaves to the rest of the plant