Tag: importance and classification of angiosperms

Questions Related to importance and classification of angiosperms

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

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

  1. Jute

  2. Cotton

  3. Flax

  4. Sisal

Show answer
Correct Option: B
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'

Cultivated cotton is obtained from ____________.

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

  1. Two species

  2. Three species

  3. Four species

  4. One species

Show answer
Correct Option: C
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'

Which of the following is a pseudo-cereal crop

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

  1. Maize/Zea mays

  2. Barley/Hordeum vulgare

  3. Buck wheat/Fagopyrum esculentum

  4. Rice/Oryza sativa

Show answer
Correct Option: C
Explanation:

A pseudocereal crop is a non-grass that are used in the same way as cereals (true cereals are grasses). Examples are amaranth, quinoa, and buckwheat.

So the correct option is C.

Which of the following plant yields oil and fibre both ____________.

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

  1. Cocos nucifera

  2. Eucalyptus

  3. Brassica campestris

  4. Euphorbia hirta

Show answer
Correct Option: A
Explanation:

(a) Coconut (Cocos nucifera) is a plant the fruit is a Drupe that yields both fibres and the dried endosperm is used for obtaining oil. Coconut oil is used in cooking oil as well as hair oii

So, the correct answer is 'Cocos nucifera'

The main source of food and fodder is

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

  1. Lichen

  2. Cereals

  3. Fungus

  4. Cotton

Show answer
Correct Option: B
Explanation:

Cereals is the main source of food and fodder.

So the correct option is B.

Match List- I with List-II and select the correct answer.

List-I List-II
a. Medicago sativa $1$. Fodder
b. Tabebuia chrysantha $2$. Ornamental
c. Sesbania cannabina $3$. Biofertilizer
d. Derris elliptica $4$. Insecticide
biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

  1. A-$2$, B-$1$, C-$3$, D-$4$

  2. A-$1$, B-$2$, C-$3$, D-$4$

  3. A-$1$, B-$3$, C-$2$, D-$4$

  4. A-$1$, B-$2$, C-$4$, D-$3$

Show answer
Correct Option: A

Epidermal hairs of the seed coat are the important commodity in

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

  1. Coconut

  2. Jute

  3. Banana

  4. Cotton

Show answer
Correct Option: D

In the mature pollen grains of angiosperms, recognition proteins are located in the ___________.

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

  1. Bulbine

  2. Intine

  3. Nexine

  4. Exine

Show answer
Correct Option: A

The active chemical drug reserpine is obtained from 

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

  1. Datura

  2. Rauwolfia

  3. Atropa

  4. Papaver

Show answer
Correct Option: B
Explanation:
Reserpine (also known by trade names Raudixin, Serpalan, Serpasil) is an indole alkaloid, antipsychotic, and antihypertensive drug that has been used for the control of high blood pressure and for the relief of psychotic symptoms, although because of the development of better drugs for these purposes and because of its numerous side-effects, it is rarely used today. The antihypertensive actions of reserpine are a result of its ability to deplete catecholamines (among other monoamine neurotransmitters) from peripheral sympathetic nerve endings. These substances are normally involved in controlling heart rate, force of cardiac contraction and peripheral vascular resistance. Reserpine-mediated depletion of monoamine neurotransmitters in the synapses is often cited as evidence to the theory that depletion of the monoamine neurotransmitters causes subsequent depression in humans (c.f. monoamine hypothesis). However, this claim is not without controversy. The reserpine-induced depression is considered by some researchers to be a myth, while others claim that teas made out of the plant roots containing reserpine have a calming, sedative action that can actually be considered antidepressant. Notably, reserpine was the first compound shown to be an effective antidepressant in a randomized placebo-controlled trial. Reserpine was isolated in 1952 from the dried root of Rauwolfia serpentina.
So the correct option is 'Rauwolfia'.

The largest fibre crop of east India is

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

  1. Jute

  2. Flax

  3. Cotton

  4. Coir

Show answer
Correct Option: A