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प्रश्न
Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?
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उत्तर १
Moss plants produce a large number of male gametes to increase the chances of fertilisation, as the eggs are located in the archegonium and the male gametes have to swim in water to reach the eggs for fertilisation to occur. The male gametes are called antherozoids.
उत्तर २
Moss plants produce a very large number of male gametes because the male gametes need to move through a moist environment to reach the egg for fertilization. Many male gametes fail to reach the egg, so producing them in large numbers compensates for this loss. These male gametes are called antherozoids.
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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.
Write two ways in which pollination may occur in plants.
Name two characteristics of flowers in which pollination occur by wind.
Give one word/term for the following:
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
Give four adaptations shown by flowers pollinated by wind.
Describe the Advantages and Disadvantages of self-pollination to the Plant.
Very short answer type question:
What is hydrophily?
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by ______.
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by ______.
Chief pollinators of agricultural crops are ______.
The flower which possesses both androecium and gynoecium is called perfect or ______.
What is hypohydrophily?
What is epihydrophily?
Name the pollinating agent of a flowering plant with large and coloured flowers with sticky stigma. State one characteristic feature of the pollen grains produced in such flowers.
When and why does a plant breeder employ the emasculation technique?
Comparatively a large amount of pollen grains are wasted during ______.
Hydrophily (Hypo) is characterized by which of the following conditions?
Which of the following agencies of pollination is abiotic in nature?
Autogamy refers to which type of pollination process?
