Question

An albuminous seed showing hypogeal germination is
A.Castor
B.Bean
C.Gram
D.Maize

Answer 1

Hint:Endospermic or Albuminous seed: In albuminous seeds, embryo does not expend all endosperm. So it endures in the developed seed. In these seeds food is put away in endosperm in contrast to non-endospermic seeds or exalbuminous seeds where endosperm is totally devoured by the developing embryo, and the developed seeds are without endosperm. The food is put away in cotyledons.Germination of seeds: The cycle by which the torpid embryo of the seed resumes dynamic development and develops into another plant is known as germination.

Complete answer:
Epigeal germination: In this sort of germination, the hypocotyl extends quickly and curves upwards pulling the cotyledons which move over the soil. Bean, cotton, papaya, gourd, castor and onion have germination of this sort. One of the main examples for epigeal germination is the common bean. In this the epicotyls remain the same in length. The plants also need a amount of sunlight for photosynthesis. So they are generally found in fields and at the border of forest.

Hypogeal germination: In this sort of germination, the epicotyl extends and the cotyledons stay underneath the soil. Pea, mango, maize, rice, gram and groundnut have germination of this sort. Generally the cotyledons are fleshy, and it contains many nutrients which are used for germination.photosynthesis will not take place in the cotyledons because they were situated underneath the soil. The plants which exhibit hypogeal germination will grow relatively very slowly.

A. Castor-Albuminous seed shows epigeal germination.
B. Bean-Ex-albuminous seed shows epigeal germination.
C. Gram-Ex-albuminous seed shows hypogeal germination.
D. Maize-Albuminous seed shows hypogeal germination.
Maize is an albuminous seed which undergoes hypogeal germination in which the epicotyls elongates and the cotyledons remain in the soil.

Hence, the correct answer is option D, Maize.


Note:The albuminous seed demonstrating hypogeal germination is maize. In many monocotyledons including maize, the seeds are endospermic or albuminous where the embryo is installed in the endosperm and nucleus, which the seedling will use upon germination. Maize shows hypogeal germination, a seed is portrayed as indicating hypogeal germination, when the cotyledons of the developing seed remain non-photosynthetic, inside the seed shell and underground.