Plant Reproduction

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Created by: GGB2016
Created on: 21-06-16 17:17

1. Which one of these does the embryo not consist of?

Radicle
Cotyledons
Ovule
Plumule

1 of 8

2. What type/how many cells are produced when a mother cell undergoes meiosis?

Microspores - 4
Endosperms - 3
Micropyles - 4
Zygotes - 3

3. What is pollination?

The production of an egg cell
The production of CO2 in a plant
The transfer of pollen from anther to stigma
The transfer of pollen from stigma to anther

4. What is a disadvantage of self pollination?

Variation increases within individuals
There's a lack of variation, decreasing the chance of survival
Favourable gene combinations are retained
Energy consumption is high as many gametes must be produced

5. What becomes the testa?

Fertilised ovule
Ovary
Outer integument
Embryo sac

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Comments

HonorPoulton

Report Wed 2nd November, 2016 @ 17:58

There are some errors in here, the Tube nucleus in the pollen grain controls the growth of the pollen tube before disintegration.

It is the generative nucleus which consists of the two male nuclei. One of these fuses with the polar nucleus to form the triploid endosperm tissues which will become the endosperm and the other fuses with the oosphere to divide by mitosis to become the embryo.