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Dicot Seed

and are the c...

Question

and _ are the components of the seed coat of beans.

A

Testa; micropyle

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B

Testa; tegmen

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C

Plumule; radicle

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D

Hilium; tegmen

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Solution

The correct option is B Testa; tegmen
Seeds are the fertilized ovules of a flower. In order to protect them from unfavorable conditions and pathogens they are covered by protective covering called seed coat.
In Bean seed, it is made up of two layers:
i. Testa - The outer covering of a seed coat.
ii. Tegmen - The inner covering of a seed coat.

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Q. Bean seeds have a seed coat with two layers. They are:

Q. A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below :

Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.

On examining the list the teacher remarked that only three parts are correct

Select three correct parts from the above list :

(a) Testa, Radicle, Cotyledon

(b) Tegmen, Radicle, Micropyle

(c) Cotyledon, Plumule, Testa

(d) Radicle, Cotyledon, Plumule

Q. State True or False for the statements, regarding the difference between a bean seed and a maize grain.
Bean seed is a monocot seed
Endosperm is present in maize grain
Cotyledons store food in bean seed
Seed coat and fruit wall are fused to form a maize grain

Q. Assertion :The outermost covering of a dicotyledonous seed is the seed coat.
Reason: The seed coat has two layers- outer testa and inner hilum.

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