Plants

Question 1

what does the cell membrane do?

Answer 1

• allows CO2 in

- allows O2 out

Question 2

what happens in the chloroplast?

Answer 2

photosynthesis takes place

Question 3

what is the purpose of placing a leaf in boiling water at the beginning?

Answer 3

to kill the leaf

Question 4

why is a water bath used instead of a Bunsen burner?

Answer 4

because ethanol is flammable

Question 5

what do chloroplast contain?

Answer 5

chlorophyll which absorbs light

Question 6

what happens in the chloroplasts?

Answer 6

a place where photosynthesis occurs

Question 7

what does it mean by a destarched leaf?

Answer 7

if there is no light then starch is broken down into glucose for use in respiration

Question 8

what is the method for testing a leaf for starch?

Answer 8

• leaf put in boiling water to kill it and stop reactions
• leaf is heated in ethanol to remove all green pigment (chlorophyll)
• use a hot water bath instead of a bunsen burner because ethanol is flammable
• then remove leaf and test for starch with iodine

Question 9

name two substances that are transported in the xylem?

Answer 9

• water

- minerals

Question 10

how do the shoots respond in plants?

Answer 10

• the shoots grow towards light (positively photographic)

- shoots grow against gravity (negatively geographic)

Question 11

how do roots respond in plants?

Answer 11

• the roots grow away from light (negatively photographic)

- the roots grow towards gravity (positively geographic)

Question 12

what does the hormone auxin promote?

Answer 12

growth in shoots

Question 13

what does the hormone auxin inhibit?

Answer 13

growth in roots

Question 14

how do you know the difference between an animal cell and a plant cell?

Answer 14

I know it is a plant cell because it has a cell wall and a vacuole and an animal cell doesn’t contain a cell wall or vacuole

Question 15

where does the water enter through into a plant?

Answer 15

through the roots

Question 16

where are hair root cells found?

Answer 16

the cells on plant roots grow into long hairs ethic stick out into the soil

Question 17

how is a root hair cell adapted for absorbing water?

Answer 17

the plant has a large surface area for absorbing water when the roots stick out of the soil they catch the rain water

Question 18

which process does water move into root hair cells by?

Answer 18

osmosis is the movement of water particles

Question 19

plants have 2 transport system. what are they called?

Answer 19

xylem

phloem tube