Photosynthesis (Part 1 - Photosynthesis and structure of leaf)

Question 1

Photosynthesis

Answer 1

Series of reactions in which food (glucose) molecules are made using energy from sunlight

Question 2

Photosynthesis balanced equation

Answer 2

6CO2 + 6H2O + Light ————> C6 H12 O6 + 6O2

Question 3

Requirements for photosynthesis and how they obtain it

Answer 3

Water - Soil - Osmosis
Carbon dioxide - Air - Stomata, Diffusion
Energy - Sunlight absorbed by chlorophyll

Question 4

Products of photosynthesis

Answer 4

Glucose - Used in respiration
- Converted into starch for storage
Oxygen - Released through stomata as waste
- Used in respiration

Question 5

Chloroplasts

Answer 5

Photosynthesis takes place in the chloroplasts

Pigment chlorophyll to trap the light is located here

Question 6

structure of the leaf

Answer 6

Waxy cuticle
Spongy mesophyll layer
Air space
Stoma
Upper epidermis
Palisade mesophyll layer
Vascular bundle - Xylem
                          - Phloem
Guard cell

Question 7

Waxy cuticle

Answer 7

Prevents water loss

Question 8

Upper epidermis

Answer 8

Protects the tissues underneath

Question 9

Palisade mesophyll layer

Answer 9

Carries out photsynthesis

Question 10

air spaces in spongy mesophyll layer

Answer 10

Allow gases (CO2,O2) to move around rapidly by diffusion

Question 11

Xylem

Answer 11

Transports water to the leaves from the roots

Question 12

Phloem

Answer 12

Transports water from the leaves to the rest of the plant

Question 13

Stoma

Answer 13

allows exchanges of gases

Question 14

Guard cell

Answer 14

controls the opening and closing of stomata

Question 15

Advanatge of large surface area as adaptation

Answer 15

Absorbs large amount of sunlight

Question 16

Advantage of Stomata as adaptation

Answer 16

Allow rapid exchange of gases

Question 17

Advantage of air spaces in spongy mesophyll as adaptation

Answer 17

Allow gases to move around rapidly

Question 18

Advantage of Xylem as adaptation

Answer 18

Transports water to the leaves from the roots

Question 19

Advantage of Upper epidermis is thin as adaptation

Answer 19

Allows light to pass through easily

Question 20

Role of photosynthesis

Answer 20

Provides living organisms with food which they obtain energy (Converts light energy to chemical energy)
Provides organisms with raw materials for growth and repair
Generates O2 for respiration

Question 21

Photosynthesis word equation

Answer 21

Carbon Dioxide + Water +(Light - Chloropyhll)————–> Glucose + Oxygen