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प्रश्न
List the post-fertilisation events in angiosperms.
उत्तर
The various post-fertilisation events occurring in angiosperms are:
(i) Endosperm is formed before the development of embryo, as it provides nourishment to the developing embryo.
(ii) Zygote at the micropylar end undergoes successive divisions to form pro-embryo. It is followed by the formation of globular, heart-shaped and mature embryo.
(iii) A mature dicotyledonous embryo consists of two cotyledons, epicotyl and hypocotyl. On the other hand, a mature monocotyledonous embryo possesses only one cotyledon, a coleoptile and coleorrhiza.
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संबंधित प्रश्न
Describe the post-fertilization changes in a flower.
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?
A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has ______.
Which of the following is a post-fertilization event in flowering plants?
Termination of gastrulation is indicated by ______.
Which among these is NOT a post-fertilization event?
Embryogenesis is ______.
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 a developing embryo, analyse the consequences if cell divisions are not followed by cell differentiation.
List the changes observed in an angiosperm flower subsequent to pollination and fertilisation.
