Module 1-Photosynthesis And Food Webs

Question 1

Why are plants very important organisms in an ecosystem?

Answer 1

Because without them there would be no food

Question 2

Why are leaves thin and wide?

Answer 2

To increase the surface area for absorption of light and carbon dioxide

Question 3

What is the basic anatomy of a cross-section leaf?

Answer 3

Upper epidermis, lower epidermis, palisade mesophyll layer, spongy mesophyll layer, air spaces

Question 4

What waterproof covering is on the epidermis?

Answer 4

The cuticle

Question 5

What is Photosynthesis?

Answer 5

A process by which green plants make their own food

Question 6

What can green plants do?

Answer 6

Convert light energy into chemical energy in food

Question 7

What do plants require to photosynthesise?

Answer 7

Carbon dioxide and water

Question 8

Where is water taken in from a plant?

Answer 8

It’s roots, and it then moves upwards through stems to the leaves

Question 9

What do plants produce as a by-product of photosynthesis?

Answer 9

Oxygen, which is released into the atmosphere

Question 10

What is Chlorophyll needed for?

Answer 10

To trap light energy for photosynthesis

Question 11

Where is chlorophyll found?

Answer 11

It is found in chloroplasts in green plant cells

Question 12

What do plants make during photosynthesis?

Answer 12

Sugar (glucose), which they can store as starch

Question 13

How do plants make cellulose for plant cell walls?

Answer 13

They use glucose

Question 14

What is the word equation for photosynthesis?

Answer 14

Water + Carbon Dioxide —> Glucose + Oxygen

Question 15

What do herbivores eat?

Answer 15

Only plants

Question 16

What do carnivores eat?

Answer 16

Only animals

Question 17

What do omnivores eat?

Answer 17

Both plant and animal material

Question 18

What do the arrows of a food chain indicate?

Answer 18

The direction of energy flow

Question 19

Why are green plants known as producers?

Answer 19

They make there own food by photosynthesis

Question 20

What do consumers eat?

Answer 20

Plants and other animals

Question 21

What is a food web?

Answer 21

It’s an inter-connected series of food chains

Question 22

What do predators eat?

Answer 22

Other animals called prey

Question 23

What do food chain/webs begin with?

Answer 23

Producers

Question 24

What is the sun?

Answer 24

The source of energy for producers

Question 25

What are producers eaten by?

Answer 25

Primary consumers

Question 26

What are primary consumers eaten by?

Answer 26

Secondary consumers

Question 27

What are secondary consumers eaten by?

Answer 27

Tertiary consumers

Question 28

What is a a pyramid of numbers?

Answer 28

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

Question 29

What does a pyramid of energy show?

Answer 29

The energy content of all the organisms at each stage of the food chain

Question 30

What is the purpose of the upper epidermis?

Answer 30

Transparent to let light through

Question 31

What is the purpose of the lower epidermis?

Answer 31

Contains stomata to allow exchange of gas

Question 32

What is the purpose of the Palisade mesophyll cells?

Answer 32

Primary site of photosynthesis

Question 33

What is the purpose of the spongy mesophyll cells?

Answer 33

Loosely arranged with air spaces to let CO2 and O2 enter and leave

Question 34

What is the purpose of the stomata?

Answer 34

Pores which allow gas exchange and water loss

Question 35

What is the purpose of the guard cells?

Answer 35

Changes shape to protect stomata