Question

If endosperm is absent in mature seeds, they are called​

Answer 1

Answer:

non albuminous seed

Explanation:

endosperm is nutritive tissue. It is triploid in nature. But some seed do not have endosperm , this type of seed is known as non albuminous seed.

Answer 2

Answer:

Exalbuminous or non-endospermic seeds.          

Explanation:

• In seeds, food is stored either in the cotyledons a special food storage tissue or in the endosperm.  

• In legumes, for example, the food is stored chiefly in the cotyledons and there is no endosperm.

• The absence of endosperm in the seeds indicates that the endosperm has been completely utilized by the developing embryo. Such seeds are known as non-endospermic or exalbuminous.

• In some dicotyledons (e.g., castor) and monocotyledons (e.g., cereals and grasses) the food is stored mainly in the endosperm. Such seeds are known as endospermic or albuminous.

• Food materials stored in the seeds include carbohydrates, proteins and fats.

• Different types of seeds accumulate different food materials. For example, seeds of wheat, rice, maize, etc., are rich in carbohydrates. Seeds of castor, sunflower, soybean, peanut, etc., are rich in fats and seeds of legumes are rich in proteins.

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