section 1. (9) identify some responses of plants to temperature change Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What are 5 responses to temperature that plants undergo?

A

1) transpiration
2) change in leaf orientation
3) leaf fall
4) seed dispersal
5) vernalisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

explain transpiration

A
  • evaporation of water from stomates cools the plants
    o Rate may increase with a rise in temperature
    o Many plants close their stomates at temps above 30 degrees to reduce water loss
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

explain the change in leaf orientation

A

to adjust the surface area of the plant exposed to the sun- preventing overheating and dehydration caused by excessive water loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

explain leaf fall

A

plants such as eucalypts drop their leaves during dry, hot weather to reduce surface area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

explain seed dispersal

A

in response to fires plants such as the Hakeas do this because the soil will be nutrient rich and there will be a lack of competition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

explain Vernalisation

A

some plants will not flower until they are exposed to a specific temperature for a specific period of time (tulips)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly