Biology
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.
Seeds
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Answer
(a) In bean seeds, hypocotyl grows faster and the seeds are brought above ground.
(b) Coleorhiza is a protective layer of radicle and coleoptile protects the rolled plumule.
(c) A seed is protected by testa and tegmen.
(d) Seeds absorb water through micropyle which also helps in diffusion of respiratory gases.
(e) Rice, wheat and maize are rich in starch food.
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Related Questions
Give two examples of each of the following :
(a) Monocot albuminous seed.
(b) Dicot albuminous seed.
(c) Monocot non-endospermic seed.
(d) Dicot non-endospermic seed.
(e) Viviparous plant.
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.
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).
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