Which of the following Factor is notr equired by a seed to germinate opsan A pea b wheat c Bengal gram Answer batwo
Answers
A ) pea is the correct answer
Question:-
Which of the following Factor is not required by a seed to germinate?
Answer:-
A. Pea.
A seed is a mature ovule, which is formed after the fertilization.
The outer covering of a seed is called seed-coat which is a protective covering and is known as testa. Seeds contain a small opening called micropyle through which water enters into the seed.
The inner layer below the testa is called tegmen. Inside, seeds contain embryo which consists of cotyledons, radicle and plumule. Seed contains endosperm. However the endosperm is absent in some seeds. Hilum is a scar, where the seed breaks from the stalk of the ovule wall.
Types of Seeds According to the Number of Cotyledons:
Seeds are of two types according to the number of cotyledons.
A. Monocotyledonous Seeds:
These seeds contain only one cotyledon; for example, wheat, bajra, maize and rice.
B. Dicotyledonous Seeds:
These seeds contain two cotyledons; for example, mango, gram and pea.
Types of Seeds According to the Food Storage Tissue
There are two types of seeds according to the food storage tissue.
A. Endospermic Seeds (Albuminous):
Endospermic seeds are those in which food is stored in endosperm, e.g., wheat, rice and bajra.
B. Non-Endospermic Seeds (Exalbuminous):
Non-endospermic seeds are those in which food is stored in cotyledons, e.g., pea and gram.