Photosynthesis and food chains

Question 1

why plants are very important organisms.

Answer 1

Produce oxygen, provide food, offer habitat, produce products used in medicine.

Question 2

why leaves are thin and wide

Answer 2

[WIDE] To absorb as much light as possible. [THIN]To get CO2 from bottom of the leaf to the top.

Question 3

What are the basic parts of a leaf section

Answer 3

upper epidermis, lower epidermis, palisade mesophyll layer, spongy mesophyll layer, air spaces, guard cells surrounding stoma pores on the lower surface

Question 4

What is function of the upper epidermis

Answer 4

Transparent to let light through. Protects inner layers

Question 5

What is function of the lower epidermis

Answer 5

Contains stomata to allow gas exchange

Question 6

What is function of the palisade mesophyll layer

Answer 6

Primary site of photosynthesis

Question 7

What is function of the spongy mesophyll layer

Answer 7

Loosely arranged with air spaces to let CO2 and O2 move into and out of cells

Question 8

What is function of the stomata

Answer 8

Pores which allow gas exchange and water loss

Question 9

What is functions of each of the Guard cells

Answer 9

Change their shape to open and close stomata

Question 10

Why is a waxy, waterproof covering (cuticle) on the epidermis

Answer 10

Reduce water loss

Question 11

What is the process by which green plants make their own food

Answer 11

Photosynthesis

Question 12

What do plants require to photosynthesise

Answer 12

Sunlight, Water, Carbon dioxide

Question 13

What do plants produce as a by-product of photosynthesis

Answer 13

Oxygen

Question 14

What green pigment is required for photosynthesis

Answer 14

Chlorophyll

Question 15

What is the name of the organelles that contain chlorophyll

Answer 15

Chloroplasts

Question 16

What do plants make during photosynthesis

Answer 16

Glucose (sugar) and oxygen

Question 17

How do plants store glucose?

Answer 17

As starch

Question 18

Plants use which compound to manufacture cellulose

Answer 18

Glucose

Question 19

What is the word equation for photosynthesis

Answer 19

Carbon dioxide + Water -> Glucose + Oxygen (requires sunlight)

Question 20

What do herbivores eat?

Answer 20

Plants

Question 21

What do carnivores eat?

Answer 21

Animals

Question 22

What do Omnivores eat?

Answer 22

Plants and Animals

Question 23

Give some examples of herbivores, carnivores and omnivores

Answer 23

too many to list. Examples may include Cow (h), Lion (c) Human (o)

Question 24

what is a food chain

Answer 24

It is a relationship where one organism feeds on the previous one & in turn provides energy for the next one.

Question 25

What do the arrows show in a food chain?

Answer 25

The direction of energy flow

Question 26

What are green plants known as in a food chain?

Answer 26

Producer

Question 27

What are animals known as in a food chain?

Answer 27

Consumer

Question 28

What is a food web?

Answer 28

An interconnected series of food chains

Question 29

What do we call the animals that are eaten by predators?

Answer 29

Prey

Question 30

What do we always find at the beginning of a food web?

Answer 30

Producer/Green plant

Question 31

What procides the energy for a food web/chain?

Answer 31

The Sun

Question 32

What are producers eaten by in a food chain?

Answer 32

Primary Consumer

Question 33

What are primary consumers eaten by in a food chain?

Answer 33

Secondary Consumer

Question 34

What are secondary consumers eaten by in a food chain?

Answer 34

Tertiary consumer

Question 35

What does a pyramid of numbers show?

Answer 35

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

Question 36

What does a pyramid of energy show?

Answer 36

It is a diagram showing the energy content of all the organisms at each stage of the food chain.