topic 6 plants and their structues

Question 1

what is photosynthesis?

Answer 1

to use the energy from the sun too make glucose

Question 2

what is biomass ?

Answer 2

mass of living material

Question 3

where does photosynthesis happen ?

Answer 3

chloroplast

Question 4

why does photosynthesis happen in the chloroplast

Answer 4

the chlorophyll absorbs light

Question 5

what is the word equation of photosynthesis ?

Answer 5

carbon dioxide + water –> glucose
+ oxygen

Question 6

what is the symbol equation for photosynthesis

Answer 6

6CO2 + 6H2O –> C6H12O + 6O2

Question 7

what kind of reaction is photosynthesis

Answer 7

endothermic

Question 8

what are the limiting factors for photosynthesis ?

Answer 8

light intensity, carbon dioxide concentration, temperature

Question 9

describe the core practical for photosynthesis

Answer 9

set a light a measured distance from Canadian pondweed in water mixed with sodium hydrogen carbonate with a gas syringe. set a timer for a set time and the syringe should fill with oxygen. measure that.

Question 10

How do we control the control variables?

Answer 10

to keep the temperature the same put it in a water bath, to control the co2 put the same amount of sodium hydrogen carbonate in water in every experiment

Question 11

what are hair cells on roothair cells?

Answer 11

cells on the surface that have grown

Question 12

why do roothair cells what large surface area?

Answer 12

to absorb more water and mineral ions

Question 13

what are phloem tubes made from?

Answer 13

columns of elongated living cells with small pores in the end walls to allow stuff to flow through

Question 14

what do phloem tubes transport?

Answer 14

food substances for immdeiate use

Question 15

what is the transportation of food substances known as?

Answer 15

translocation and it goes in both directions

Question 16

what are xylem tubes made of?

Answer 16

dead cells joined end to end with no end between them and a hole down the middle.

Question 17

what is the material that strengthens the xylem called?

Answer 17

lignin

Question 18

what do the xylem carry?

Answer 18

water and mineral ions from the roots to the stems and leaves.

Question 19

what is the movement of water from the roots and through the xylem and out the leaves called

Answer 19

transpiration stream

Question 20

what are stomatas?

Answer 20

tiny pores on the surface of the plant

Question 21

what do the stomata do?

Answer 21

allowed co2 and o2 to diffuse directly in and out of leaves and allow water vapour to escape during trqnspiration

Question 22

what are stomata?

Answer 22

tiny pores on the surface of the plant

Question 23

what do the stomata do?

Answer 23

allowed co2 and o2 to diffuse directly in and out of leaves and allow water vapor to escape during transpiration

Question 23

what do the stomata do?

Answer 23

allowed co2 and o2 to diffuse directly in and out of leaves and allow water vapor to escape during transpiration

Question 24

what are stomata surrounded by?

Answer 24

guard cells

Question 25

what do guard cells do?

Answer 25

change shape to control the size of the pore

Question 26

what does turgid mean?

Answer 26

swollen with water

Question 27

what does flaccid mean?

Answer 27

low on water and limp

Question 28

what is transpiration affected by?

Answer 28

light intensity, temperature and airflow

Question 29

how do you estimate the transpiration rate?

Answer 29

with a potometer as it measures the water uptake

Question 30

how is the water uptake related to the water loss from the leaves?

Answer 30

directly proportional