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The technique of emasculation is practiced when the flowers are

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Important Questions on Sexual Reproduction in Flowering Plants

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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Even in the absence of pollinators, assured seed set will be there in
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Which one of the following may require pollinators, but is genetically similar to autogamy?
MEDIUM
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination

Assertion (A): Cleistogamous flowers produce assured seed set in the absence of pollinators

Reason (R): Cleistogamy is invariably an Autogamy

MEDIUM
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Which of the following aquatic plant does not show pollination by water?
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Attractants and rewards are required for:
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
When pollen grains are transferred from anther to the stigma of another flower produced on the same plant, it is called.
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Dichogamy and herkogamy are the important devices or modifications to prevent one of the following:
MEDIUM
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Which of the following plants shows a very close relationship with a species of moth, where none of the two can complete their life cycle without the other?
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Geitonogamy involves
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
In water hyacinth and water lily, pollination takes place by:
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is
EASY
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Pollination in water hyacinth and water lily is brought about by the agency of:
HARD
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Self pollination is fully ensured if
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Identify the correct order of steps involved in Artificial hybridization in plants:
MEDIUM
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Which of the statements is correct?
MEDIUM
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Choose the correct combinations
I) Pusa swarnim - Brassica - White rust resistance
II) Pusa gaurav - Brassica - Fruit borer resistance
III Pusa sawani - Bhindi - Fruit borer resistance
IV) Pusa sadabahar - Chilli - Leaf curl resistance
MEDIUM
Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination

Match the following lists:

  List-I   List-II
  Crop bred by hybridization   Resistance to disease
(A) Wheat (I) Block rot and curl blight black rot
(B) Brassica (II) Mosaic virus, leaf curl
(C) Cauliflower (III) Leaf and stripe rust, hill bunt
(D) Cowpea (IV) White rust
    (V) Bacterial blight

The correct match is:

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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Which of the following is incorrect for wind-pollinated plants?
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
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Biology>Reproduction in Plants>Sexual Reproduction in Flowering Plants>Pollination
Which of the following are the important floral rewards to the animal pollinators?