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प्रश्न
What is self-incompatibility?
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उत्तर
Sexual incompatibility occurs when a pistil with functioning female gametes fails to establish seeds after pollination with viable and fertile pollen capable of fertilizing another pistil. Sexual incompatibility can arise between members of different species or within the same species. The condition is also known as self-incompatibility.
संबंधित प्रश्न
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
List the different types of pollination depending upon the source of pollen gain.
Why does self-pollination not lead to seed formation in self-incompatible species?
What is meant by emasculation?
Write two ways in which pollination may occur in plants.
Fill in the blank:
Male sex cells in plants are called _________.
Fill in the blanks:
The two kinds of pollination are __________ and __________.
Find the odd-one out, giving reason:
Ovary, style, pollen grain, stigma
Differentiate between the following:
Self pollination and cross pollination.
Complete the following chart and rewrite.
| Sr.No. | Agencies | type of pollination |
| 1 | Water | .................... |
| 2 | ........................... | Entomophily |
| 3 | Bat | .................... |
| 4 | ....................... | Ornithophily |
(Or)
Explain outbreeding devices in angiospermic plants.
State the name of the chief pollinating agent against the corresponding plant by choosing from those given in brackets.
Dahlia_______ .
Fill in the blanks with suitable words.
Different timings for the maturation of gynoecium and androecium is called ________.
State four features of flowers pollinated by insects.
Differentiate between geitonogamy and xenogamy (allogamy).
What is a flower? Draw a typical flower and label its different parts.
Differentiate Between Cross Pollination and Self Pollination:
Very short answer type question:
What is hydrophily?
Explain water pollination in detail with its types.
For which of the following attractants and rewards are required?
Both chasmogamous and cleistogamous flowers are present in ______.
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
In some plants anther and stigma mature at the same time this condition is called ______.
Which of the following plant contain unisexual flower?
Which one of these statements is incorrect?
The following statements seem to describe the water-pollinated submerged plants.
Autogamy can occur in a chasmogamous flower if ______.
What are the major abiotic factors that influence habitat?
Name the following:
Aquatic plants which are anemophilous.
Name the following:
One plant each of Hypohydrophily and epihydrophily.
Bird pollinated flowers are usually ______.
Hydrophily (Hypo) is characterized by which of the following conditions?
