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Percentage of Pollen Germination
Percentage of Pollen Germination
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1)
Which part of the flower contains pollen?
Filament
Stigma
Ovary
Anther
2)
The compositions present in the germination medium helps
To determine the genetic characteristics of the resulting plant
To inhibit the production of pollen grains
To provide essential nutrients and a suitable environment for pollen tube growth
To trigger the release of pollen grains from the anthers
3)
What happens to the generative nucleus in the pollen tube of a germinating pollen grain?
Divides to produce two male gametes
Forms two generative nucleus
Forms tube cells
Divides to produce two female gametes
4)
Identify the cell that gets divided into smaller size after cell division
Generative cell
Male gamete
Cytoplasm
Tube nucleus
5)
The female gamete is produced by which of the following?
Anther
Ovary
Stamen
Stigma
6)
Which male part of the flower is involved in fertilization?
Pistil
Stigma
Stamen
Style
7)
Why is sucrose used as a medium for pollen germination?
Sucrose provides a carbon energy source that can initiate pollen metabolism.
All of the statements are correct.
In nature pollen grain germinates in response to a sugary fluid secreted by the mature stigma.
Sucrose maintains the osmotic pressure to prevent the bursting and collapse of pollen grains.
8)
What factors influence pollen germination?
Wind speed, precipitation, soil type, and air pressure
Bird migration patterns, insect behavior, plant age, and day length
Leaf size, root depth, flower color, and pH levels
Temperature, humidity, substrate composition, and light
9)
Pollen grains are transferred from a flower's anthers to its stigma through a process known as
Fertilization
Propagation
Pollination
Germination
10)
The outer protective coat of pollen is termed as
Intine
Exine
Generative cell
Tube nucleus
