Question

Albuminous seeds are found in
A. Pea, Groundnut, Castor
B. Castor, Sunflower, Barley
C. Wheat, Barley, Castor
D. Pea, Groundnut, sunflower

Answer 1

Seeds are developed from the ovules inside the ovary which develops into fruit after fertilization. A seed is made up of seed coat and encloses parts like cotyledons, plumule and radicle. On the basis of number of cotyledons- seeds are categorized into two types- monocotyledonous and dicotyledonous.

Complete answer: The dicot seeds are further classified into two types- endospermic or albuminous seeds and non-endospermic or non-albuminous seeds.
The seeds of castor, sunflower, rubber, papaya, cotton, and mustard apple are endospermic. Most of the dicot seeds are non-endospermic.
The monocotyledonous seeds are with a single cotyledon and are generally endospermic.
Some monocots are non-endospermic, for example, Orchids, Saggitaria, Pothos and Amorphophyllous. In grains, the main bulk of the seed is endosperm that stores food. Endosperm in those deeds are separated from the embryo by a distinct layer known as aleurone layer.
So albuminous seeds contain some parts of endosperm as it is not completely consumed by the embryo during its development. Endosperm stores the food which is required by the growing embryo.
So, the correct answer is “Option A”.

Additional Information: The post-fertilization changes in plants include endosperm formation, embryo formation, seed formation, and fruit formation.
Endosperm is the characteristic storage tissue that supplies nutrition to the developing embryo. Development of endosperm occurs from the primary endosperm nucleus (PEN) as a result of the triple fusion process.
In the triple fusion, the nucleus of one of the male gametes enters the central cell and fuses with two polar nuclei or with their fusion product which results in the formation of triploid primary endosperm nucleus.

Note: The endosperm in the seeds are of three types- nuclear endosperm, cellular endosperm and helobial endosperm. Nuclear endosperm is the most common type of endosperm and is reported in 161 families.