Biology
Arrange the following set of terms in order, so as to be in logical sequence. Rewrite the correct order.
- Embryo, 1st male gamete, zygote, egg cell, micropyle.
- Zygote, embryo, seed, allogamy, fusion of gametes.
- Tegmen, Embryonic axis, Cotyledons, Testa
(arrange with respect to their position in a seed from outer to inner).
Seeds
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Answer
- Micropyle, 1st male gamete, egg cell, zygote, embryo.
- Allogamy, fusion of gametes, zygote, embryo, seed.
- Testa, Tegmen, Cotyledons, Embryonic axis.
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Related Questions
Given below is the longitudinal section of a maize grain. Match the structures marked (a) to (e) with their correct functions/characteristics.
Example: (f)-6: Separates the endosperm and the embryonic part.
Fill in the blanks:
(a) In bean seeds, …………… grows faster and the seeds are brought …………… ground.
(b) …………… is a protective layer of radicle and …………… protects the rolled plumule.
(c) A seed is protected by …………… and…………….
(d) Seeds absorb water through …………… which also helps in diffusion of respiratory gases.
(e) Rice, wheat and maize are rich in …………… food.
Match the terms given in column A with those of column B.
Column A Column B Coleoptile Root system Coleorhiza Cotyledon Radicle Radicle Plumule Plumule Scutellum Shoot system Name the following:
(a) Two types of seeds on the basis of the number of cotyledons.
(b) Two types of seeds on the basis of endosperm.
(c) Three necessary conditions for the germination of seeds.
(d) Two main types of germination.
(e) Two layers of the seed coat.