Which of the following plants produce(s) chasmogamous and cleistogamous flowers?
1. Viola (Commonpansy)
2. Oxalis
3. Commelina
4. All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect the option in which both organisms cannot complete their life cycle without each other
1. Snake – Santalum
2. Ficus – Bats
3. Moth – Yucca
4. Aquilegia – Amorphophallus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFind out the correct option:
(1) Among animals, insects, particularly bees are the dominant biotic pollinating agents
(2) Often flowers of animal- pollinated plants are specially adapted for particular species of animals
(3) In some species floral rewards like edible nectar, pollen grains, shelter for egg laying are given to pollinating animals
(4) All the above are correct
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor artificial hybridisation experiment in bisexual flower, which of the sequences is correct?
(1) Bagging → Emasculation → Cross pollination → Rebagging
(2) Emasculation → Bagging → Cross pollination → Rebagging
(3) Cross pollination → Bagging → Emasculation → Rebagging
(4) Self-pollination → Bagging → Emasculation → Rebagging
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAdvantage of cleistogamy is:
1. More vigorous offspring
2. No dependence of pollinator
3. Vivipary
4. Higher genetic variability
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGeitonogamy involves
(1) Pollination of a flower by the pollen from another flower of the same plant
(2) Pollination of a flower by the pollen from the same flower
(3) Pollination of a flower by the pollen from a flower of another plant in the same population
(4) Pollination of a flower by the pollen from a flower of another plant belonging to a distant population
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGo through the following statements:
Flowers are bisexual and homogamous maturing anther and stigma of a flower at the same time.
Mechanical devices bringing anthers and stigma close together in a bisexual chasmogamous flower.
Cleistogamy (bisexual flowers remain closed)
Anther and stigma of an intersexual flower mature in bud condition.
The above contrivances favour:
(1) Allogamy
(2) Autogamy
(3) Xenogamy
(4) Cross pollination
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following are the important floral rewards to the animal pollinators?
(1) Colour and large size of flower
(2) Nectar and pollen grains
(3) Floral fragrance and calcium crystals
(4) Protein pellicle and stigmatic exudates
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn which one of the following, both autogamy and geitonogamy are prevented?
1. Wheat
2. Papaya
3. Castor
4. Maize
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGenetically and functionally self-pollination is cent percent ensured with seed formation even in the absence of pollinators by
(1) Bisexuality
(2) Dicliny
(3) Geitonogamy
(4) Cleistogamy
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology