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प्रश्न
A liverwort plant is unable to complete its life cycle in a dry environment. State two reasons
उत्तर
A liverwort is a bryophyte which is unable to complete its life cycle in a dry environment because
i. The fertilisation of male and female gametes takes place in water.
ii. Male gametes, antherozoids, swim in water to reach the eggs for sexual reproduction to take place
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संबंधित प्रश्न
Explain the importance of syngamy and meiosis in a sexual life cycle of an organism.
Explain why meiosis and gametogenesis are always interlinked?
State the fate of a pair of autosomes during gamete formation.
Meiosis is best observed in dividing ______.
Which plant will lose its economic value if its fruits are produced by induced parthenocarpy?
What is true for cleavage?
Rearrange the following events of sexual reproduction in the sequence they occur in a flowering plant:
Embryogenesis, Fertilisation, Gametogenesis, Pollination.
Is the presence of large number of chromosomes in an organism a hindrance to sexual reproduction? Justify your answer by giving suitable reasons.
Which of the followings are monoecious and dioecious organisms?
| a. | Earthworm | ______ |
| b. | Chara | ______ |
| c. | Marchantia | ______ |
| d. | Cockroach | ______ |
| Fertilisation is the key process in sexually reproducing organisms and it acts as a vital link between two generations. Flowering plants adopt a unique pattern of sexual reproduction as compared to other organisms. |
- Explain the process of fertilisation in angiosperms.
- What is the precise location and function of filiform apparatus in the embryo sac of angiosperms?
- Fruits and seeds are generally formed due to fertilisation. Name the process involved in the production of the following without fertilisation:
- Fruits
- Seeds
