Duplicate of Plant responses

16 termsStudBud Administration63 plays

Plant hormones and responses (A level Biology)

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Questions 16

Answers

1
Apical dominance is
The inhibition of lateral buds by apical buds
The inhibition of apical buds by lateral buds
The growth of lateral buds caused by apical buds
The growth of apical buds caused by lateral buds
2
In positive geotropism which way does the plant grow?
Upwards
Towards light
Away from light
Downwards
3
In fertilisation, pollen tubes growing towards the ovary are an example of
thigmotropism
chemotropism
hydrotropism
geotropism
4
Mimosa pudica is an example of
Thigmotropism
Chemotropism
Abiotic reaction
Thigmonasty
5
This can be used to make sugar cane longer
Cytokinin
Auxin
Ethene
Gibberellin
6
What hormone inhibits seed germination?
Abcisic acid
Abscisic acid
Absisic acid
Abscissic acid
7
Which hormone promotes seed germination?
Auxins
Ethene
Gibberellins
Cytokinins
8
which is an effect of abscisic acid
Widens stomata
stimulate seed germination
stimulate leaf fall
Causes stomata to close
9
What causes plant shoots to curl around other structures?
Geogtropism
Thigmotropism
Thigotropism
Geotropism
10
Why are cytokinins used in tissue culture?
To help mass produce plants
To promote growth
To kill plants
To produce fewer plants
11
A chemical which makes plants taste bitter
Alkaloid
Abscisic acid
Pheromone
IAA
12
What is found in the upper epidermis of leaves and makes them taste bad?
Mimosa pudica
Tannins
Abscisic acid
Pheromones
13
Abscisic acid
inhibits seed germination
promotes cell elongation
promotes seed germination
promotes food ripening
14
Which of these is a commercial use of cytokinins?
To speed up fruit ripening
To kill weeds
To delay senescence
To stimulate cell division
15
What is senescence?
Leaves falling
Breakdown of chlorophyll
Leaf aging
fruit ripening
16
A non-directional response to an external stimulus is a
Naste response
Nastick response
Nastic response
tropic response

Duplicate of Plant responses Flashcards | StudBud

Duplicate of Plant responses

16 termsStudBud Administration63 plays

Plant hormones and responses (A level Biology)

Flashcards16 cardsFPractice quizPHost liveL

Questions 16

Answers

1
Apical dominance is
The inhibition of lateral buds by apical buds
The inhibition of apical buds by lateral buds
The growth of lateral buds caused by apical buds
The growth of apical buds caused by lateral buds
2
In positive geotropism which way does the plant grow?
Upwards
Towards light
Away from light
Downwards
3
In fertilisation, pollen tubes growing towards the ovary are an example of
thigmotropism
chemotropism
hydrotropism
geotropism
4
Mimosa pudica is an example of
Thigmotropism
Chemotropism
Abiotic reaction
Thigmonasty
5
This can be used to make sugar cane longer
Cytokinin
Auxin
Ethene
Gibberellin
6
What hormone inhibits seed germination?
Abcisic acid
Abscisic acid
Absisic acid
Abscissic acid
7
Which hormone promotes seed germination?
Auxins
Ethene
Gibberellins
Cytokinins
8
which is an effect of abscisic acid
Widens stomata
stimulate seed germination
stimulate leaf fall
Causes stomata to close
9
What causes plant shoots to curl around other structures?
Geogtropism
Thigmotropism
Thigotropism
Geotropism
10
Why are cytokinins used in tissue culture?
To help mass produce plants
To promote growth
To kill plants
To produce fewer plants
11
A chemical which makes plants taste bitter
Alkaloid
Abscisic acid
Pheromone
IAA
12
What is found in the upper epidermis of leaves and makes them taste bad?
Mimosa pudica
Tannins
Abscisic acid
Pheromones
13
Abscisic acid
inhibits seed germination
promotes cell elongation
promotes seed germination
promotes food ripening
14
Which of these is a commercial use of cytokinins?
To speed up fruit ripening
To kill weeds
To delay senescence
To stimulate cell division
15
What is senescence?
Leaves falling
Breakdown of chlorophyll
Leaf aging
fruit ripening
16
A non-directional response to an external stimulus is a
Naste response
Nastick response
Nastic response
tropic response