5.5 Plant & Animal Responses Flashcards
1
Q
what are examples of abiotic factors?
A
- light
- soil moisture
- temperature
2
Q
what are examples of biotic factors?
A
3
Q
what are the 3 types of plant responses?
A
- responses to abiotic factors
- responses to herbivory
- tropisms
4
Q
what are examples of tropisms?
A
- phototropism
- geotropism
- hydrotropism
- thigmotropism
- chemotropism
5
Q
what is a phototropism in response to?
A
light
6
Q
what is a geotropism in response to?
A
gravity
7
Q
what is a hydrotropism in response to?
A
water
8
Q
what is a thigmotropism in response to?
A
touch
9
Q
what is a chemotropism in response to?
A
chemicals
10
Q
what is a tropism?
A
a directional growth in response to a stimulus
11
Q
what are plant responses to herbivory?
A
producing:
- alkaloids
- pheromones
12
Q
how do alkaloids defend plants against herbivores?
A
they are bitter tasting or toxic which deters or kills herbivores
13
Q
how do pheromones defend plants against herbivores?
A
14
Q
what are examples of plant responses to abiotic stress?
A
- closing stomata
- dropping leaves
- antifreeze chemicals
