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प्रश्न
Define perisperm.
उत्तर
A perisperm is a nucellus that remains after fertilisation.
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संबंधित प्रश्न
A liverwort plant is unable to complete its life cycle in a dry environment. State two reasons
Identify each part in a flowering plant and write whether it is haploid (n) or diploid (2n).
Ovary ———————————
Anther ———————————
Egg ———————————
Pollen ———————————
Male gamete ———————————
Zygote ———————————
What is a bisexual flower?
The following question(s)/statement(s) has four suggested answers. Choose the correct option in the following case.
After fertilisation, the integuments of an ovule develop into : __________.
In animals, juvenile phase is followed by ______.
Choose the statements that are true from the options below:
The statements given below describe certain features that are observed in the pistil of flowers.
- Pistil may have many carpels
- Each carpel may have more than one ovule
- Each carpel has only one ovule
- Pistil have only one carpel
Is the presence of large number of chromosomes in an organism a hindrance to sexual reproduction? Justify your answer by giving suitable reasons.
Give reasons as to why cell division cannot be a type of reproduction in multicellular organisms.
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
