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

Important use of which of the following is as a lubricant

  1. Helianthus annuus

  2. Carthamus tinctorious

  3. Ricinus communis

  4. Cocos nucifera
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

In angiosperms the pollen grain is normally pollinated at ____________.

  1. One cell stage

  2. Two celled stage

  3. Three celled stage

  4. Four celled stage
Reveal answer Fill a bubble to check yourself
B Correct answer
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'
Multiple choice biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

Petroleum plant is

  1. Euphorbia lathyrus

  2. Brickellia sp

  3. Albizia

  4. Both (a) and (b)
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Hevea yields

  1. Bast resin (latex)

  2. Soft fibre

  3. Delicious soft drink

  4. Strong fibre
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Which state in India is the largest producer of sugarcane

  1. Bihar

  2. Andhra Pradesh

  3. Punjab

  4. Uttar Pradesh
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Pungency of chilli is due to

  1. Capsaicin

  2. Paperin

  3. Diosgenin

  4. Shikorin
Reveal answer Fill a bubble to check yourself
A Correct answer
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.