Question

2. How plants are classified on the number of cotyledon present in seeds?​

Answer 1

Answer:

A cotyledon is a significant part of the embryo within the seed of a plant.

Upon germination, the cotyledon usually becomes the embryonic first leaves of a seedling.

The number of cotyledons present is one characteristic used by botanists to classify the flowering plants (angiosperms).

Species with one cotyledon are called monocotyledonous (or, "monocots") and placed in the Class Liliopsida.

Plants with two embryonic leaves are termed dicotyledonous ("dicots") and placed in the Class Magnoliopsida.

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Answer 2

Answer:

Cotyledon is a structure which stores food for embryo.

Plants are classified into two types on the basis of number of cotyledons present in the seed :-

1) Dicots :-

• Seeds of plant in which two cotyledon are present , this plants are known as Dicot plants .

• These are non-endospermic + non-albuminous

• Example:- Pea , Gram etc...

• Exception :- castor seed are endospermic...

2) Monocots:-

• Seeds of plant in which only one cotyledon is present , this type of plant are known as monocot plant .

• They are endospermic + Albuminous

• Example:- Wheat, Maize etc...

• Exception :- Orchids have non-endospermic.