Tag: biology

Questions Related to biology

Who is author of book "Introduction to the Embryology" of Angiosperms?

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

  1. Maheshwari

  2. Birbal Sahni

  3. T.S. Mahabale

  4. J.S. Singh

Show answer
Correct Option: A
Explanation:
Panchanan Maheshwari is the author of the book "Introduction to Embryology"
So, the correct answer is 'Maheshwari'

Glycerine 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. Bagasse

  2. Molasse

  3. Filter mud

  4. All the above

Show answer
Correct Option: B
Explanation:

Glycerine can be manufactured by the alcoholic fermentation of molasses.

So the correct option is B

Important use of which of the following is as a lubricant

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

  1. Helianthus annuus

  2. Carthamus tinctorious

  3. Ricinus communis

  4. Cocos nucifera

Show answer
Correct Option: C
Explanation:

Castor oil (Ricinus communis) has a number of medicinal, industrial and pharmaceutical uses. It's commonly used as an additive in foods, medications and skin care products and as an industrial lubricant, biodiesel fuel component, etc.

So the correct option is C.

In angiosperms the pollen grain is normally pollinated at ____________.

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

  1. One cell stage

  2. Two celled stage

  3. Three celled stage

  4. Four celled stage

Show answer
Correct Option: B
Explanation:
Pollen grains are shed at two-celled condition (a vegetative cell and a generative cell). In such plants, the generative cell divides and forms the two male gametes during the growth of pollen tube in the stigma.
So, the correct answer is 'Two celled stage'

Petroleum plant is

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

  1. Euphorbia lathyrus

  2. Brickellia sp

  3. Albizia

  4. Both (a) and (b)

Show answer
Correct Option: D
Explanation:

Petroleum plants belongs to the families Euphorbiaceae

(e.g., Euphorbia Lathyrus), Asclepiadaceae (e.g., Calotropis procera),

Leguminoseae (e.g., Copaifera langsdorfii) asteraceae (e. g. , Brickellia sp), etc.

So the correct option is D.

Ferula asafoetida 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. Roots

  2. Leaves

  3. Stern

  4. Flower

Show answer
Correct Option: A
Explanation:

Ferula asafoetida which is also known as hing is a gum oleoresin extracted from the roots of the plant.

So the correct option is A.

Hevea yields

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

  1. Bast resin (latex)

  2. Soft fibre

  3. Delicious soft drink

  4. Strong fibre

Show answer
Correct Option: A
Explanation:

Hevea brasiliensis is a rubber tree that produces latex in their specialized cells called laticifers which is present within the bark of the tree. 

So the correct option is A.

Bagasse is related to the manufacture of

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

  1. Canesugar

  2. Cellulose

  3. Cinchonidine

  4. Resin

Show answer
Correct Option: A
Explanation:

Bagasse is the dry fibrous residue that remains after the crushing of sugarcane or sorghum stalks to extract their juice. 

So the correct option is A.

Which state in India is the largest producer of sugarcane

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

  1. Bihar

  2. Andhra Pradesh

  3. Punjab

  4. Uttar Pradesh

Show answer
Correct Option: D
Explanation:

Uttar Pradesh has the largest area almost 50 percent of the sugarcane production area in India and it is followed by Maharashtra, Karnataka, Tamil Nadu, Andhra Pradesh, Gujarat, Bihar, Haryana and Punjab.

So the correct option is D.

Pungency of chilli is due to

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

  1. Capsaicin

  2. Paperin

  3. Diosgenin

  4. Shikorin

Show answer
Correct Option: A
Explanation:

The spiciness in the chili peppers is known as pungency and it due to the presence of a group of compounds called capsaicinoids. Capsaicin is the major spice-producing alkaloid present in peppers.

So the correct option is A.