Tag: biology

Questions Related to biology

Saffron is produced from

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Roots

  2. Petals

  3. Stamens

  4. Style stigma of carpels of crocus plant

Show answer
Correct Option: D
Explanation:

Saffron is obtained by just picking the yellow stigma and style of the plant Crocus sativus.

So the correct option is D.

Assertion : Vegetable oils are fats, which are present in plant cells in soluble form.

Reason : Vegetable oils only occur in cells of the embryo.


biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

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

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

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: D
Explanation:

Vegetable oils and fats are present in the form of small insoluble droplets within the plant cells. They occur in the seeds and most commonly in the endosperm and cotyledons. In most of the cereals, the fat occurs in the embryo. 

Olive and palm oils are two important examples that are obtained from the fleshy pericarp of the fruit. Oils and fats are extracted from the roots, stems and foliage very less frequently.
So the correct option is D.

Which of the raw material is used in paper industry

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Agave

  2. Ficus

  3. Bambusa

  4. Corchorus

Show answer
Correct Option: C
Explanation:

Paper is prepared from Bambusa vulgaris tree which is a rich source of cellulose.

So the correct option is C.

Which of the following is called "Dhaan ka Katora"

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Gwalior

  2. Indore

  3. Chhattisgarh

  4. Rewa

Show answer
Correct Option: C
Explanation:

Chhattisgarh is named as Dhan ka katara because of their
cultivation of Dhan or Rice crop.

So the correct option is C.

Central institute of toxicology is at

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Lucknow

  2. Madras

  3. Bombay

  4. Delhi

Show answer
Correct Option: A
Explanation:

The Indian Institute of Toxicology is located in Lucknow.

So the correct option is A.

In South East Asia, the basis of early agriculture was the
planting of

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Millets

  2. Legumes

  3. Some cereals

  4. Underground parts

Show answer
Correct Option: D
Explanation:

In South-East Asia, earlier the agriculture was practised by planting the base parts of the plant.

So the correct option is D.

Assertion : Pigeon pea is the second most important pulse in India.

Reason : Pigeon pea is a woody, perennial shrub.


biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

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

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

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: B
Explanation:
Pigeonpea is the second most important pulse in India and India is the largest producer of pigeon pea. Pigeonpea, also known as Cajanus cajan, is a perennial shrub belonging to the family Fabaceae. It is a highly branched shrub with a woody base, slender stems and trifoliate leaves.
So the correct option is B.

Assertion : Sunflower oil is suggested for heart patients.

Reason : Sunflower oil does not increase the cholesterol level


biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

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

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

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: A
Explanation:

(a) Sunflower oil can be safely used by heart patients because sunflower oil does not raise the cholesterol level in the blood.

SO the correct option is A.

Which of the following is most important source of food

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Lichen

  2. Angiosperms

  3. Algae

  4. Fungi

Show answer
Correct Option: B
Explanation:

Angiosperms are seeded plants and they serve as the main source of
food seeds.

So the correct option is B.

One of the following is a social foresting species with
multiple utility

biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. Mangifera indica (Mango)

  2. Leucaena leucocephala (Subabul)

  3. Borassus flabelliformis (Palmyrah palm)

  4. Rosa grandiflora (Rose)

Show answer
Correct Option: B
Explanation:

Leucaena leucocephala (Subabul) is a quick-growing
the small leguminous plant included in social
forestation.

So the correct option is B.