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प्रश्न
In a developing embryo, analyse the consequences if cell divisions are not followed by cell differentiation.
उत्तर
During embryogenesis, zygote undergoes cell division (mitosis) and cell differentiation. While cell divisions increase the number of cells in the developing embryo; cell differentiation helps groups of cells to undergo certain modifications to form specialised tissues and organs to form an organism. If cell divisions are not followed by cell differentiation then there will be no formation of tissues or organs, so a new organisms cannot be formed.
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संबंधित प्रश्न
Describe the post-fertilization changes in a flower.
List the post-fertilisation events in angiosperms.
Answer the following question.
At what stage does the meiosis occur in an organism exhibiting a haploidic life cycle and mention the fate of the products thus produced?
Answer the following question.
At what stage does the meiosis occur in an organism exhibiting haploidic life cycle and mention the fate of the products thus produced.
Cells become variable in morphology function in different regions of the embryo. The process is ______.
Which among these is NOT a post-fertilization event?
Which of the following situations correctly describe the similarity between an angiosperm egg and a human egg?
- Eggs of both are formed only once in a lifetime
- Both the angiosperm egg and human egg are stationary
- Both the angiosperm egg and human egg are mobile
- Syngamy in both results in the formation of zygote
Choose the correct answer from the options given below:
In the figure given below, mark the ovule and pericarp.
List the changes observed in an angiosperm flower subsequent to pollination and fertilisation.
Differentiate between ovipary and vivipary. Cite an example for each type.
