Tag: uses of angiosperms

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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'

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

Which of the following is a pseudo-cereal crop

  1. Maize/Zea mays

  2. Barley/Hordeum vulgare

  3. Buck wheat/Fagopyrum esculentum

  4. Rice/Oryza sativa
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  1. Cocos nucifera

  2. Eucalyptus

  3. Brassica campestris

  4. Euphorbia hirta
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

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
  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-$3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Medicago sativa is a fodder crop, Tabebuia chrysantha is ornamental, Sesbania cannabina is a biofertilizer, and Derris elliptica is used for insecticide.

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

The active chemical drug reserpine is obtained from 

  1. Datura

  2. Rauwolfia

  3. Atropa

  4. Papaver
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.