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प्रश्न
What is self-incompatibility?
उत्तर
Sexual incompatibility occurs when a pistil with functioning female gametes fails to establish seeds after pollination with viable and fertile pollen capable of fertilising another pistil. Sexual incompatibility can arise between members of different species or within the same species. This is also known as self-incompatibility.
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संबंधित प्रश्न
Write two ways in which pollination may occur in plants.
Fill in the blanks:
The two kinds of pollination are __________ and __________.
Find the odd-one out, giving reason:
Ovary, style, pollen grain, stigma
Can a unisexual flower be self pollinated?
State the name of the chief pollinating agent against the corresponding plant by choosing from those given in brackets.
Dahlia_______ .
Answer the following question.
Write the difference in the characteristics of the progeny produced as a result of the two processes.
(iii) Synergids
(iv) Micropyle
Describe pollination. How many types of pollinations are found?
Mention various adaptations for wind pollination.
What are the different adaptations shown by bird-pollinated flowers?
Give an account of various abiotic agencies used in pollination along with their adaptations for pollination.
For which of the following attractants and rewards are required?
Choose the correct statement from the following.
Which of the following is not a water pollinated plant?
A botanist studying Viola (common pansy) noticed that one of the two flower types withered and developed no further due to some unfavorable condition, but the other flower type on the same plant survived and it resulted in an assured seed set. Which of the following will be correct?
Choose the correct statement from the following:
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Consider the following statements depicting adaptation of flowers to carryout successful pollination.
- Stigma is long, sticky and unwettable.
- Sepals, petals or perianth (if present) have waxy coating.
- Stamens with long filament and versatile anthers.
- Tubular corolla is seen.
- Flowers are noctumal.
Which of the above statements clearly depict hydrophily?
Mention any one example of the hydrophilous flower.
