Photoperiodism is a plant response to

changes in length of night, changes in length of day

Sunflower plants move their flowers to follow the sun, why is this not a tropism?

the response is a movement not growth

A period of no growth in a plant, A period of no growth in a seed

A plant response to temperature

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Plant responses

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A quiz on #plant #responses #AS91603 #biology #NCEA #level3

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Questions 13

Answers

1
A tropic response is characterised by...
movement towards
movement
growth
movement away
2
Some plants droop their leaves when touched by a potential predator, this response is...
positive thigmonastic
thigmonasty
negative thigmonastic
positive thigmotropic
3
Photoperiodism is a plant response to
changes in length of night
changes in length of day
changes to the orientation of light
changes in intensity of light
4
The pigment associated with photoperiodism is...
Phritochrom
Phytochrome
Planktochrome
Lightochrome
5
Plants don't have muscles to move but move by changing their...
direction
cell nutrient levels
turgor pressure
nerve signals
6
A nastic response is characterised by...
growth
cell death
one way movement
movement not growth
7
Abscission is...
When a plant seed doesn't grow
When a tree dies
When a plant loses it's leaves
When a plant flowers
8
A plant root growing towards and down a drain will most likely be...
positive hydrotropism
negative thigmotropism
positive geotropism
negative geotropism
9
Flowering plants tend to close their petals at night time, this response is...
lunarnastic
photonastic
geotropic
phototropic
10
Sunflower plants move their flowers to follow the sun, why is this not a tropism?
The response is a tropism
the response is a movement not growth
the response is growth not movement
It is not positive or negative
11
Dormancy is...
A period of lifelessness
A period of no growth in a plant
A period of no growth in a seed
A period of hibernation
12
The response of a Venus Fly Trap to a fly would be called...
thigmonastic
photonastic
positively thigmotropic
positively hydrotropic
13
Vernalisation is...
A plant response to light
A plant response to temperature
A plant response to water
A plant response to nutrients

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