Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

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'

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.