bio first

Question 1

what structure in the leaf let in CO2 and releases O2

Answer 1

stomata

Question 2

where does photosynthesis occur

Answer 2

palisade mesophyll / leaf/ chloroplast

Question 3

give the symbol equation for photosythesis

Answer 3

6CO2 + 6H2O => C6H12O6 + 6O2

Question 4

what tissue/ structure transport the glucose from the leaves into the roots

Answer 4

phloem

Question 5

.

Answer 5

.

Question 6

what glucose converted into for storage ? e.g in vegetables

Answer 6

starch

Question 7

why does a plant need to store glucose

Answer 7

they can no longer do photo
so they use it for respiration

Question 8

what is chlorophyll

Answer 8

Chlorophyll is a pigment that gives plants their green colour, and it helps plants create their own food through photosynthesis.

Question 9

how else does plants use glucose

Question 10

what does an epidermis do

Answer 10

cover and protect surfaces

Question 11

what does an palisade mesophyll do

Answer 11

contains a lot of chloroplast and can carry out photosynthesis

Question 12

what does an spongy mesophyll

Answer 12

have large air space between cells and a large surface area for diffusion of gases

Question 13

xylem

Answer 13

transport water in plants

Question 14

phloem

Answer 14

transport sugars around the plant

Question 15

Is a flower a tissue, an organ or a system

Answer 15

an organ

Question 16

This organelle is the site of photosynthesis

Answer 16

chloroplast

Question 17

through which structure and which process do gases enter and exit the leaf

Answer 17

structure: Stomata
process: Diffusion

Question 18

chemical symbol for glucose

Answer 18

C6 H12 06

Question 19

This pigment molecule absorbs light energy for photosynthesis

Answer 19

chlorophyll

Question 20

Name 3 factors that the rate of photosynthesis can be limited by.

Answer 20

light intensity
CO2 Concentration
temperature

Question 21

what substances is found in the xylem cell wall + functions

Answer 21

lignin = provides strength and resistance against pathogens

cellulose = gives strength

Question 22

what is the function of stomata in the plant

Answer 22

regulate gas exchange between the plant and environment and control of water loss

Question 23

This surface of the leaf loses most water

Answer 23

the bottom because that is where the stomata is and the top has a waxy cuticle so water cant go through there anyway

Question 24

Root hair cells

Answer 24

allows the plant to absorb more water by Large surface area

Question 25

word equation for photosynthesis:

Answer 25

water + carbon dioxide → glucose + oxygen.

Question 26

What type of reaction is photosynthesis?

Answer 26

endothermic reaction.

Question 27

Is water a limiting factor?

Answer 27

no because it would die from other things before it runs out of water

Question 28

Why do enzymes work quicker until the optimum temperature?

Answer 28

that’s where the rate of reaction is the highest

Question 29

Why do enzymes stop working above the optimum temperature?

Answer 29

Some of the bonds holding the enzymes together starts to break
The active site starts to change shape
it then changes so much that the substrate can’t fit

Question 30

What structure in the plant transports water? How is it adapted for this function?