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प्रश्न
As a senior biology student you have been asked to demonstrate to the students of secondary level in your school, the procedure(s) that shall ensure cross-pollination in a hermaphrodite flower. List the different steps that you would suggest and provide reasons for each one of them.
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उत्तर
As a senior biology student, to demonstrate cross-pollination in a hermaphrodite flower, first perform emasculation by removing stamens before pollen release to prevent self-pollination. Next, bag the emasculated flower to avoid contamination from unwanted pollen. Then, collect pollen from a different plant and dust it onto the stigma of the emasculated flower. Finally, re-bag and label the flower to ensure controlled cross-pollination. This procedure prevents self-fertilisation and promotes genetic variation.
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संबंधित प्रश्न
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 ?
Why does self-pollination not lead to seed formation in self-incompatible species?
What is meant by emasculation?
Fill in the blank:
Male sex cells in plants are called _________.
Can a unisexual flower be self pollinated?
Which one of the following is one of the characteristics of self-pollinated flowers?
Mention any two contrivances in flowers which favour cross-pollination.
Type of interaction where an individual sacrifices its own welfare (life) for the benefit of another animal of its own species is ______.
Put a tick mark (✓) against the correct alternative in the following statements
Pollen is produced in the
What are the different adaptations shown by bird-pollinated flowers?
Give an account of any two biotic agents for pollination along with their adaptations.
Pollination occurs in ______.
Which of the following pair has haploid structures?
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
Pollination refers to the ______.
Describe any three adaptations in anemophilous flowers.
Mention any one example of the hydrophilous flower.
Anemophily is the process of pollination by which agent?
Hydrophily (Hypo) is characterized by which of the following conditions?
