Question

Albumin is also known as
(a)Perisperm
(b)Synergids
(c)Plumule
(d)Endosperm

Answer 1

Hint: This develops from the sperm released fuses with the two polar nuclei (in the embryo sac) forming a triploid cell. It is a tissue produced inside the seeds of most flowering plants.

Complete answer:
Albumin is also known as endosperm. In some like in the family Poaceae the endosperm is present in the mature seed stage as a storage tissue and the seeds are called albuminous or endospermous. While in others (like in family Fabaceae) it is absorbed during embryo development and the seeds are known as exalbuminous or cotyledonous. In these plants, the function of storage tissue is performed by enlarged cotyledons. In certain species, the storage function is distributed between both endosperm and the embryo-like in corn. Some mature endosperm tissue stores fats like in castor beans, while in wheat it is mainly stored as starches.
Some like in orchids have no endosperm. In some other species, the endosperm also does not develop. Instead, the nucellus produces a nutritive tissue termed perisperm like in coffee. Endosperm tissue is responsible for aborting seeds produced from genetically mismatched parents, basically mediating the transfer of nutrients from the mother to the embryo. The endosperm contains hormones that regulate cellular differentiation and embryonic organ formation in angiosperms.
So, the correct answer is ‘Endosperm’.

Note:
There are mainly three types of development seen in endosperm and they are-
Nuclear endosperm formation- where repeated nuclear divisions take place; known as liquid endosperm and if a cell wall is formed after the division. Example: coconut water.
Cellular endosperm formation – where a cell-wall formation occurs with nuclear divisions. Example: coconut meat.
Helobial endosperm formation – where cell-wall is formed between the first two nuclei and one half of this develops endosperm along with cellular pattern while the other half along with the nuclear pattern.