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Standard XII
Biology
Question

According to IUCN, some of the recent extinctions include
(i) Dodo (ii) Quagga
(iii) Indian gazelle (iv) Thylacine
(v) Steller's sea cow (vi) Bali- subspecies of tiger
  1. (i), (ii), (iii) and (iv)
  2. (ii), (iii), (iv) and (vi)
  3. (i), (ii), (iv) and (v)
  4. (iii), (iv), (v) and (vi)

A
(i), (ii), (iii) and (iv)
B
(i), (ii), (iv) and (v)
C
(ii), (iii), (iv) and (vi)
D
(iii), (iv), (v) and (vi)
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Solution
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The correct option is C (i), (ii), (iv) and (v)
The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), founded in 1965, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red List are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The IUCN Red List is set upon precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. The aim is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to try to reduce species extinction. Species such as Dodo, Quagga, Thylacine and Steller's sea cow are recent extinctions.
So the correct option is '(i), (ii), (iv) and (v)'.

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Q1
According to IUCN, some of the recent extinctions include
(i) Dodo (ii) Quagga
(iii) Indian gazelle (iv) Thylacine
(v) Steller's sea cow (vi) Bali- subspecies of tiger
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Q2

Match the following


  1. (1)–(iii), (viii); (2)–(i), (iv); (3)–(ii), (vi); (4)-(ii),(v); (5)–(iii), (iv); (6)–(i) (vii); (7)–(ii), (iv)

  2. (1)–(ii), (vii); (2)–(i), (iv); (3)–(ii), (vi); (4)-(ii),(v); (5)–(ii), (iv); (6)–(i) (viii); (7)–(iii), (iv)

  3. (1)–(ii), (vii); (2)–(i), (vii); (3)–(iii), (iv); (4)-(i),(v); (5)–(ii), (vi); (6)–(i) (vi); (7)–(i), (iv)

  4. (1)–(ii), (vii); (2)–(i), (iv); (3)–(ii), (vi); (4)-(ii),(iv); (5)–(i), (viii); (6)–(iii) (iv); (7)–(iii), (vii)

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Q3
Functions of plant growth promoters and plant growth inhibitors are given here in a jumbled up manner. Select the option that torrettly segregates these functions.
(i)Cell division(ii)Cell enlargement
(iii)Pattern formation(iv)Tropic growth
(v)Flowering(vi)Fruiting
(vii)Seed germination(viii)Response to wounding
(ix)Response to stresses
of biotic and abiotic origin
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Functions of
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(a)(i), (ii), (vii), (ix)(iii), (iv), (v), (vi), (viii), (x)
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Match the columns

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A.

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i.

Russia

B.

Dodo

ii.

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C.

Quagga

iii.

Australia

D.

Steller's sea cow

iv.

Africa

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Q5
Match column I with column II and select the correct option from the codes given below:

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