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प्रश्न
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
पर्याय
Monoecious plant bearing unisexual flowers
Dioecious plant bearing only male or female flowers
Monoecious plant with bisexual flowers
Dioecious plant with bisexual flowers
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उत्तर
Dioecious plant bearing only male or female flowers
APPEARS IN
संबंधित प्रश्न
Describe the characteristic features of wind pollinated flowers.
A flower of tomato plant following the process of sexual reproduction produces 200 viable seeds.
Answer the following questions giving reasons :
(a) What would have been the minimum number of ovules present in pre-pollinated pistil ?
(b) How many microscope mother cells would minimally be required to produce requisite number of pollen grains ?
(c) How many pollen grains must have minimally pollinated the carple ?
(d) How many male gametes would have used to produce these 200 viable seeds ?
(e) How many megaspore mother cells were required in this process ?
Mention two strategies that evolved to prevent self-pollination in flowers.
Fill in the blank:
Male sex cells in plants are called _________.
Exine and intine are the parts of
Type of Interaction where an individual sacrifices its own welfare (life) for the benefit of another animal of its own species is ______.
Give four adaptations shown by flowers pollinated by wind.
Can a plant flowering in Mumbai be pollinated by pollen grains of the same species growing in New Delhi? Provide explanations to your answer.
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?
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
In some plants anther and stigma mature at the same time this condition is called ______.
During Hybridization process anther of the bisexual flower is removed before it dehisces is called ______.
Advantage of cleistogamy is:
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?
Pollination in water lilies is carried out by ______.
Mention any one example of the anemophilous flower.
Give any four floral adaptations for chiropterophily.
