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प्रश्न
Define perisperm.
उत्तर
A perisperm is a nucellus that remains after fertilisation.
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संबंधित प्रश्न
Explain the significance of meiocytes in a diploid organism.
A liverwort plant is unable to complete its life cycle in a dry environment. State two reasons
Explain why meiosis and gametogenesis are always interlinked?
Identify each part in a flowering plant and write whether it is haploid (n) or diploid (2n).
Ovary ———————————
Anther ———————————
Egg ———————————
Pollen ———————————
Male gamete ———————————
Zygote ———————————
Collect five bisexual flowers from your neighborhood and with the help of your teacher find out their common and scientific names.
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote, and the cells of the seedling will be, respectively, ______.
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
Gamete transfer occurs through water in all of the following except:
In haploid organisms that undergo sexual reproduction, name the stage in the life cycle when meiosis occurs. Give reasons for your answer.
Do all the gametes formed from a parent organism have the same genetic composition (identical DNA copies of the parental genome)? Analyse the situation with the background of gametogenesis and provide or give suitable explanation.
