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Earn 100

Which of the following organisms has a thick skin ?
(a)Kangaroo rat
(b)Desert snake
(c)Camel
(d)Fish

50% studentsanswered this correctly
Important Questions on Organisms and Populations
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Match List with List.
List | List | ||
(a) | Allen's Rule | (i) | Kangaroo rat |
(b) | Physiological adaptation | (ii) | Desert lizard |
(c) | Behavioural adaptation | (iii) | Marine fish at depth |
(d) | Biochemical adaptation | (iv) | Polar seal |

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Match the following. The correct combinations are
List I | List II | List III | |||
(a) | Diapause | (i) | Temperature variations with seasonal changes | (p) | Temperature lake |
(b) | Cyclomorphosis | (ii) | Light produced by living organisms | (q) | Insects |
(c) | Thermal stratification | (iii) | Inactiveness | (r) | Pyrosoma |
(d) | Bioluminescence | (iv) | Seasonal morphological variations | (s) | Daphnia |

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Match the following:
Set-I | Set-II | ||
(A) | Endosmosis | (I) | High altitude adaptation |
(B) | Exosmosis | (II) | Desert adaptation |
(C) | Metabolic water | (III) | Problem for fresh water animal |
(D) | Increase in the production | (IV) | Problem for marine animals |
The correct match is

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I. Amoeba has contractile vacuole.
II. Glomerular kidneys in freshwater fishes.
III. Sponges form gemmules.
IV. Neoceratodus forms a gelatinous cocoon.
Among the above, the correct statements are

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Reason (R): To enhance transpiration in desert plants

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Hydrilla and Limnophila are examples for the following categories respectively,
i) Free-floating hydrophyte and rooted hydrophyte with floating leaves
ii) Submerged, suspended hydrophyte
iii) An amphibious plant
iv) Submerged, suspended hydrophyte and a free-floating hydrophyte
v) Submerged, rooted hydrophyte and an amphibious plant
The correct combination is

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Column I | Column II | ||
a. | Oxylophytes | (i) | Calcium rich soils |
b. | Eremophytes | (ii) | Waste land |
c. | Chersophytes | (iii) | Deserts, steppes |
d. | Calciphytes | (iv) | Acidic soils |

