Gibberellin stimulates the production of

Amylase and protease in the aleurone layer

The 8 female nuclei are produced by

1 meiosis, 3 die then 3 mitosis divisions

In double fertilisation the two male nuclei fuse with

The oosphere and the 2 polar nuclei

An advantage of inbreeding is

It is beneficial if the environment is unchanging

The opening of the anther to release pollen

Cross pollination means

Transfer of pollen between flowers on different plants

Which of these is not a way of avoiding self pollination

Anther above the stigma to stop pollen falling onto it

Which of these is true about pollen

It contains cells with haploid nuclei

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Plant reproduction

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Biology plant reproduction

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Questions 20

Answers

1
Gibberellin stimulates the production of
Amylase and protease in the aleurone layer
Plant growth hormones
Amylose in the aleurone layer
Amylase in the endosperm
2
The ovary wall develops into the
Pericarp
Food store
Carpel
Seed
3
The 8 female nuclei are produced by
1 meiosis, 3 die then 3 mitosis divisions
4 mitosis divisions
1 mitosis followed by meiosis of both cells
1 meiosis follwed by 1 mitosis
4
The polar nuclei after fertilisation become
The seed
The endosperm
The embryo sac
The zygote
5
In wind pollinated plants the pollen is..
Found in the filament
Has hooks to grip the stigma
Produced in large quantities
Very spiky
6
In double fertilisation the two male nuclei fuse with
The antipodal and synergid cells
The oosphere and the 2 polar nuclei
The 2 polar nuclei
The Antipodal and the oosphere
7
The nuclei in pollen grains are produced by
Mitosis
Magic
Meiosis
Mitosis and meiosis
8
The substance that controls breakdown of the endosperm is
Protease
Abscisic acid
Amylase
Gibberellin
9
The integuments become
The fruit
The seed
The micropyle
The testa
10
Part E is
Micropyle
Integuments
Hilum
Funicle
11
An advantage of inbreeding is
There is less variation which is good for evolution
It is beneficial if the environment is unchanging
There is less chance of a harmful mutation
There isn't one, out breeding is always better
12
Part B is
Funicle
Integuments
Chalaza
Hilum
13
Dehiscence means
A group of small wind pollinated flowers
The cell division that produces plant gametes
Production of more than one nucleus in a cell
The opening of the anther to release pollen
14
The scar on top of the seed is called
The chalaza
The epicotyl
The hilum
The micropyle
15
The advantage of cross-pollination is that
It allows for greater genetic diversity
All of these
Allows for evolution
Reduces the chance of harmful allele combinations
16
Part A is
Funicle
Hilum
Integuments
Chalaza
17
Cross pollination means
Pollen transfer from one species of plant to another
Transfer of pollen between a male flower and a female flower
Transfer of pollen between angry flowers
Transfer of pollen between flowers on different plants
18
Which of these is not a feature of insect pollinated plants?
Strongly smelling flowers
Small quantities of spiky pollen
Large feathery stigma
Large colourful petals
19
Which of these is not a way of avoiding self pollination
Male and female flowers on separate plants
Anthers ripen before stigma
Pollen cannot germinate on the stigma of the same plant.
Anther above the stigma to stop pollen falling onto it
20
Which of these is true about pollen
It is made up of triploid cells
It contains a diploid pollen tube nucleus
It is the plant gamete
It contains cells with haploid nuclei

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