Home
Class 12
BIOLOGY
Assertion : Ex-albuminous seeds do not p...

Assertion : Ex-albuminous seeds do not possess any residual endosperm, as it is completely consumed during embryo development.,
Reason : Wheat, castor, pea and groundnut are all the examples of ex-albuminous seeds.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that ex-albuminous seeds do not possess any residual endosperm because it is completely consumed during embryo development. This is true. Ex-albuminous seeds, which are also known as non-endospermic seeds, have their endosperm utilized entirely by the developing embryo. 2. **Understanding the Reason**: The reason provided states that wheat, castor, pea, and groundnut are examples of ex-albuminous seeds. This statement is false. Wheat, castor, pea, and groundnut are actually examples of albuminous seeds, meaning they retain some endosperm after embryo development. 3. **Evaluating the Relationship**: Since the assertion is true and the reason is false, we need to determine the correct option based on this evaluation. 4. **Choosing the Correct Option**: The options provided are: - A) Both assertion and reason are true, and reason is the correct explanation of assertion. - B) Both assertion and reason are true, but reason is not the correct explanation of assertion. - C) Assertion is true, but reason is false. - D) Both assertion and reason are false. Since the assertion is true and the reason is false, the correct option is C) Assertion is true, but reason is false. ### Final Answer: The correct option is C) Assertion is true, but reason is false. ---

### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that ex-albuminous seeds do not possess any residual endosperm because it is completely consumed during embryo development. This is true. Ex-albuminous seeds, which are also known as non-endospermic seeds, have their endosperm utilized entirely by the developing embryo. 2. **Understanding the Reason**: The reason provided states that wheat, castor, pea, and groundnut are examples of ex-albuminous seeds. This statement is false. Wheat, castor, pea, and groundnut are actually examples of albuminous seeds, meaning they retain some endosperm after embryo development. 3. **Evaluating the Relationship**: Since the assertion is true and the reason is false, we need to determine the correct option based on this evaluation. ...
Promotional Banner

Topper's Solved these Questions

  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    NCERT FINGERTIPS ENGLISH|Exercise Sexual Reproduction In Flowering Plants|145 Videos
  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    NCERT FINGERTIPS ENGLISH|Exercise NCERT|20 Videos
  • REPRODUCTIVE HEALTH

    NCERT FINGERTIPS ENGLISH|Exercise Reproductive Health|133 Videos
  • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

    NCERT FINGERTIPS ENGLISH|Exercise Strategies For Enhancement In Food Production|151 Videos

Similar Questions

Explore conceptually related problems

one of the examples of seeds in which the endosperm is completely consumed during embryo development is

The endosperm is completely consumed by the developing embryo in the seeds of :

Assertion : Maize is an albuminous seed Reason : Endosperm is completely absorbed by its growing embryo.

Some seeds retain a part of endosperm as it is not completely used up during embryo development, while in some seeds, remnants of the nucellus are also persistent. Choose the option with example of the respective types of seeds.

Give any two examples each of endospermic (albuminous) seeds and non- endospermic (exalbuminous) seeds.

Give reasons why : (i) most zygotes in angiosperms divide only after certain amount of endosperm is formed. (ii) ground nut seeds are exalbuminous and castor seeds are albuminous. (iii) Micropyle remains as a small pore in the seed coat of a seed. (iv) integuments of an ovule harden and the water content is highly reduced,as. the seed matures. apple and cashew are not called true fruits.

Which of the following plants have albuminous seeds ? (Wheat , pea black pepper ,castor, sunflower, groundnut , barley)

Cotyledons serve as food storage region to provide nourishment in ex-albuminous condition during seed germination in

Assertion : In Cocos nucifera coconut water represents the cellular endosperm and the surrounding white kernel represents the free-nuclear endosperm. Reason : Endosperm is always completely consumed by developing embryo before seed maturation.

(a) Draw a diagrammatic sectional view of a mature anatropous ovule and label the following parts in it : (i) that develops into seed coat. (ii) that develops into an embryo after fertilization. (iii) that develops into an endosperm in an albuminous seed. (iv) through which the pollen tube gains entry into the embryo sac. (v) that attaches the ovule to the placenta. (b) Describe the characteristic features of wind pollinated flowers.