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Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
The seed coat forms from the __________.
- a. integuments
- b. coleoptile
- c. endosperm
- d. sepals
Introduction: A developing plant which is covered by a protective outer covering is called a seed. They are formed as a result of the fertilization of the ovules. During the double fertilization, the zygote develops into an embryo and the ovule-containing integuments develop to form the seed coat, which is the thick rigid outer covering that functions to protect the seeds from any harm.
Reason for the correct answer:
The double fertilization that takes place in most of the flowering plants will produce a triploid cell and a zygote. They undergo mitotic division and the triploid cell develops into endosperm while the zygote develops into an embryo sporophyte. During the maturation time of the embryo, the ovules’ integuments will develop into a seed covering called as seed coat. Ovules undergo fertilization to produce mature seeds. Seeds mainly consist of three parts – an embryo, nutritive tissue or food storage, and the seed covering called as seed coat. The enlarged basal region of a carpel containing ovules is called ovary. They undergo fertilization to produce fruit. Ovules are a part of the carpel which carries the female gametes. They undergo fertilization to produce seeds. Most of the nutrients are stored in two enlarged cotyledons in a eudicot seed.
Option a. is given as “integuments”.
When the maturation of ovules takes place after the fertilization process, the integuments will be developed into seed covering or seed coat.
Hence, the correct answer is option a...
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