Tag: importance of plants

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Questions Related to importance of plants

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

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

Reason : Pigeon pea is a woody, perennial shrub.


  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
Reveal answer Fill a bubble to check yourself
B Correct answer
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.
Multiple choice biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

Assertion : Sunflower oil is suggested for heart patients.

Reason : Sunflower oil does not increase the cholesterol level


  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. Mangifera indica (Mango)

  2. Leucaena leucocephala (Subabul)

  3. Borassus flabelliformis (Palmyrah palm)

  4. Rosa grandiflora (Rose)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

So the correct option is B.

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

What statement is true about microspore of angiosperms.

  1. Resultant of mitotic division

  2. First cell of gamophytic generation

  3. Resultant of double fertilization

  4. First cell of endosperm
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The microspore is the first cell of the male gametophytic generation in angiosperms, formed after meiosis.

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

Richest source of vitamin 'C' is ______________.

  1. Capsicum frutescens

  2. Emblica officinalis (Amla)

  3. Orange

  4. Lemon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

(b) The fruits of Emblica officinalis are great medicinal value and it is one of the richest source of vitamin C.

So, the correct answer is 'Emblica officinalis (Amla)'

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

During summer, Khas khas mats for cooling air are prepared
from the roots of

  1. Bambusa nana

  2. Saccharum manja

  3. Vetiveria zizanoides

  4. Setaria pumila
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Khas khas mats are widely used in i\India to beat the summer heat. They are prepared with dry grass (Vetiveria zizanoides) or hay which can store a lot of water and are hung around the house. Then the water present in these mats absorb the heat from the surroundings in the form of latent form of energy and thus evaporates.
So the correct option is C.
Multiple choice biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

Which fibre crop occupies the maximum area in India or the most cultivated fibre crop in India is _______.

  1. Jute

  2. Cotton

  3. Flax

  4. Sisal
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 India is 10% producer of cotton (Gossypium herbaceum) in whole world. The fibers are obtained from the fruit, a capsule. Cotton is mainly cultivated in Punjab, Maharashtra, Gujarat. 

So, the correct answer is 'Cotton'

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

Cultivated cotton is obtained from ____________.

  1. Two species

  2. Three species

  3. Four species

  4. One species
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cotton obtained from four species of Gossypium genus namely, Gossypium arboreus, G. herbaceum (2n,) G.
hirsutum, G. barbadense (4n).

So, the correct answer is 'Four species'