S2 Biology Test Phtotsnthesis

Question 1

Name 3 reasons why plants are so important?

Answer 1

Plants provide oxygen
Plants provide a high energy food source
Plants provide medicine
Plants provide shelter

Question 2

Why are leaves wide?

Answer 2

A large surface area helps to absorb more light energy

Question 3

Why are leaves thin

Answer 3

It helps get carbon dioxide from the bottom to the top of the leaf.

Question 4

What is the formula for photosynthesis?

Answer 4

Carbon dioxide +water = chlorophyll = glucose+oxygen
Raw material. Light energy. Products

Question 5

What does the upper emidermis do?

Answer 5

Protects inner layers
Transparent to let light through

Question 6

What does the lower epidermis do?

Answer 6

Protects inner layers
Contains stoma to allow gas exchange

Question 7

What do palisade mesophyll cells do?

Answer 7

Main site of photosynthesis
Full of chloroplasts

Question 8

What do spongy mesophyll cells do?

Answer 8

Loosely arranged with air spaces to let co2 and o2 move into and out of cells

Question 9

What does the stomata do?

Answer 9

Pores which allows gas exchange

Question 10

What do guard cells do?

Answer 10

Change their shape to control gas exchange on the stoma

Question 11

What does the basic part of a leaf section consist of?

Answer 11

Upper epidermis
Lower epidermis
Palisade mesophyll layer
Spongy mesophyll layer
Air spaces
Guard cells surrounding stoma pores on the lower surface

Question 12

What must there be on the epidermis?

Answer 12

A waxy waterproof covering (cuticle)

Question 13

What process is photosynthesis?

Answer 13

The process in which green plants make their own food

Question 14

What do green plants convert light energy into?

Answer 14

Chemical energy

Question 15

What do plants require to make photosynthesis?

Answer 15

Water and carbon dioxide

Question 16

How is water taken into the plants

Answer 16

Through the roots

Question 17

How does the water get from the roots to the leaves?

Answer 17

By travelling up the roots into the stems and then to the leaves

Question 18

What do plants produce as a by product if photosynthesis?

Answer 18

Oxygen

Question 19

What happens to the oxygen after photosynthesis

Answer 19

It is released into the atmosphere

Question 20

What is needed to trap light energy for photosynthesis

Answer 20

Chlorophyll

Question 21

Where is chlorophyll found in green plants?

Answer 21

In chloroplast in green plant cells

Question 22

What do plants make in the process of photosynthesis?

Answer 22

Glucose (sugar) oxygen

Question 23

What do plants store glucose as?

Answer 23

Starch

Question 24

What do plants also use glucose to make?

Answer 24

To make cellulose for plant cell walls

Question 25

What do herbivores eat?

Answer 25

Only plants

Question 26

What do carnivores eat?

Answer 26

Only other animals

Question 27

What do omnivores eat

Answer 27

Both plants and animals

Question 28

An example of a herbivore?

Answer 28

Cows sheeps Rabbits

Question 29

Examples of omnivores

Answer 29

Bears Dogs Ducks

Question 30

Examples of carnivores

Answer 30

Lions Wolf Sharks

Question 31

What is a food chain

Answer 31

A food chain represents the transfer of energy from one organism to another.

Question 32

What do the arrows in a food chain represent?

Answer 32

Te direction of energy flow

Question 33

What are green plants known as in food chains

Answer 33

Producers as they make their own food

Question 34

What do consumers do?

Answer 34

They eat plants and other animals

Question 35

What is a food web

Answer 35

It’s an interconnected series of food chains

Question 36

Example of a food chain? Mammal and a water one

Answer 36

Oak tree —>wood mouse—>weasel—>owl [producer]. [Primary] [Secondary]. [Tertiary]

Question 37

What do predators eat?

Answer 37

Prey

Question 38

What do food chains/webs begin with

Answer 38

Producers

Question 39

What is the source if energy for producers

Answer 39

The sun

Question 40

What are producers ate by?

Answer 40

Primary consumers [herbivores ]

Question 41

What are the primary consumers eaten by

Answer 41

Secondary consumers

Question 42

What are secondary consumers eaten by

Answer 42

Tertiary consumers

Question 43

What is a pyramid number

Answer 43

Is a diagram showing the number of organisms at each stage of the food chain

Question 44

What does a pyramid of energy show?

Answer 44

It shows the energy content of all the organisms at each stage of the food chain

Question 45

What do u test a leaf for?

Answer 45

Starch