Phtotsynthesis And Plants

Question 1

What do plants make in photosynthesis and how?

Answer 1

Food (sugars and starch) using light energy

Question 2

What type of reaction is photosynthesis

Answer 2

Endothermic

Question 3

How is the light trapped?

Answer 3

Chlorophyll in chloroplasts

Question 4

What is the word equation for photosynthesis?

Answer 4

Carbon dioxide + water + glucose —> oxygen

Question 5

What is the symbol equation?

Answer 5

6Co2 + 6H2O —> C6H12O6 + 6O2

Question 6

Describe the epidermis

Answer 6

> one cell thick
regularly shaped, flattened cells - act as physical defence
has no chloroplasts
transparent - let’s light through

Question 7

Describe the upper epidermis

Answer 7

> covered by thin, transparent layer of wax- protects against disease
waterproof
limits the loss of water by evaporation

Question 8

Describe the lower epidermis

Answer 8

> has pores called stomata
stomata present at regular intervals
each made up of crescent shaped guard cells
open and close

Question 9

Describe stomata

Answer 9

> openings of intercellular air spaces
allow gases to diffuse in and out
guard cells contain chloroplasts