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Class 12
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Percentage of Pollen Germination
Percentage of Pollen Germination
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1)
Which part of the flower contains pollen?
Anther
Stigma
Ovary
Filament
2)
What is the male part of the flower?
Stamen
Stigma
Pistil
Style
3)
What happens to the generative nucleus in the pollen tube of a germinating pollen grain?
Divides to produce two female gametes
Divides to produce two male gametes
Forms tube cells
Forms two generative nucleus
4)
Identify the cell that gets divided into smaller size after cell division
Cytoplasm
Generative cell
Male gamete
Tube nucleus
5)
The female gamete is produced by which of the following?
Ovary
Anther
Stigma
Stamen
6)
Identify the cell which is divided from the generative cell.
Female gametes
Tube nucleus
Male gametes
Generative cell
7)
Why is sucrose used as a medium for pollen germination?
In nature pollen grain germinates in response to a sugary fluid secreted by the mature stigma.
All of the statements are correct.
Sucrose provides a carbon energy source that can initiate pollen metabolism.
Sucrose maintains the osmotic pressure to prevent the bursting and collapse of pollen grains.
8)
How many male gametes are produced in a pollen tube
3
2
4
1
9)
Pollen grains are transferred from a flower's anthers to its stigma through a process known as
Pollination
Germination
Fertilization
Propagation
10)
The outer protective coat of pollen is termed as
Intine
Tube nucleus
Generative cell
Exine