Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Plant Response > Flashcards

Plant Response Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

Response

A

A reaction in an organism as a result of a stimulus

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

Structures necessary for a plant response

A

Hormonal system - plant + animal
Nervous system - animal
Immune system

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

Hormone

A

A chemical produced in one part of an organism and transported to another part where it has its effect

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

External stimuli

A 
Light intensity
Day length
Gravity
Temperature 
Water
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Internal stimuli

A

Growth regulators - chemicals

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

Tropism

A

Growth tendency of a plant in response to an external stimulus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Types of Tropism

A 
Phototropism
Geotropism
Hydrotropism
Thigmotropism
Chemotropism
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Phototropism

A

Growth tendency of a plant in response to light
Shoots - positive
Roots - mainly negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Geotropism

A

Growth tendency of a plant in response to gravity
Roots - positive
Shoots - negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Thigmotropism

A

Growth tendency of a plant in response to touch

Climbing plants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Hydrotropism

A

Growth tendency of a plant in response to water

Roots and pollen tubes - positive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Chemotropism

A

Growth tendency of a plant in response to chemicals

Pollen tubes - positive to ovule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Growth regulators

A

A chemical which controls the growth of a plant
Produced at the tip of the meristem
Transport to the zone of elongation in phloem and xylem
Promotes root growth at high concentration
Active in small amounts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Growth promoter

A

Auxins - IAA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Growth inhibitor

A

Abcistic acid or ethene

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Stimulation

A

Any change in the environment which causes a response in an organism

17
Q

Mechanisms of Phototropism

A

Causes more auxin to diffuse to shaded side
More growth on shaded side
Plant bends towards light
Plant shoot and leaves in a favorable position for maximum light and maximum photosynthesis

18
Q

Mechanisms of Geotropism

A

IAA causes root growth at low concentration
Gravity causes more IAA to be collected at lower side of the root
Root grows towards gravity
Roots are in a favorable position to absorb water and minera

19
Q

Commercial growth regulators

A

NAA AND IBA: commercial roofing powders to stimulate root growth
Gibberellins: increase the size of fruit
Ethene: ripening agent for food

20
Q

Anatomical plant adaptations for protection

A 
Bark to protect trees
Thorns
Spines
Stinging hairs /needles
Waxy cuticles on leaves
21
Q

Chemical plant adaptations for protection

A

Corn lily is poisonous

Poison Ivy produces a chemical to protect the plant from herbivores

22
Q

Where is Auxin produced

A

Meristematic tissue

23
Q

Inhibitory function of auxin

A

Apical dominance

Biology (38 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions