Tag: economic importance of plants and animals

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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

Following arrangement is correct from the point of view of decreasing biodiversity in angiosperms (N), fungi (F), pteridophytes (P) and algae (A).

  1. N $>$ F $>$ P $>$ A
  2. N $>$ F $>$ A $>$ P
  3. F $>$ N $>$ P $>$ A
  4. F $>$ N $>$ A $>$ P
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Biodiversity means the diversity of species of genetic variation within one species and of ecosystem angiosperms have the ability to live animals into transporting their pollen and seeds. Fungi, unlike plants and pteridophytes, are vascular plants that produce neither flowers nor seeds. Algae cannot synthesize their food and need an external source of nutrients. The order of decreasing biodiversity is N>F >A>P. Hence, the correct answer is option B,  N>F >A>P.

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.