Tag: economic importance of plants and animals

Quizzes (8) Questions (78)

Questions Related to economic importance of plants and animals

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'.
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 groups of characteristics is applicable to the timber obtained from Sal(Shorea)?

  1. Strong, durable, moderately heavy, takes good polish

  2. Strong, durable, heavy, does not take good polish

  3. Strong, durable, heavy. takes good polish

  4. Not strong, durable if not exposed, light, does not take good polish
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sal (Shorea robusta) timber is known for being strong, durable, heavy, and taking a good polish.

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 using the codes below the lists:

List-I(Timber) List-II(Country)
A. Cedar 1. Myanmar
B. Douglas Fir 2. Canada
C. Mahogany 3. Mexico
D. Teak 4. Honduras

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

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

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

  4. A - 2, B - 3, C - 1, D - 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
 Cedar  Mexico
 Douglas Fir  Canada
 Mahogany  Honduras
 Teak  Myanmar

So, the correct option is 'A - 3, B - 2, C - 4, D - 1'.