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11.Organisms and Populations
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Temperature gradient over earth surface is
A
$6.4$ to $6.5^{\circ} vC$ per $1000\, m$ altitude
B
$6.4$ to $6.5^{\circ}\, C$ per $1000\, m$ latitude
C
$7.5$ to $9.5^{\circ}\, C$ per $1000 \,m$ latitude
D
$7.5$ to $9.5^{\circ}\, C$ per $1000 \,m$ altitude
Solution
Temperature gradient over the earth's surface is $6.4$ – per $1000 \,m$ altitude or latitude. Therefore, there is lowering of mean temperature from equator to poles. Tropical, sub-tropical, temperate and arctic organisms living in these zones are respectively called Megatherms, mesotherms, microtherms and hekistotherms
Standard 12
Biology
Similar Questions
Match the columns :
| Column – $I$ | Column – $II$ |
| $(a)$ Camouflage | $(i)$ Dendrobatespumilio |
| $(b)$ Batesian mimicry | $(ii)$ Horse- shoe bat |
| $(c)$ Warning mimicry | $(iii)$ Monarch butterfly |
| $(d)$. Echo -location | $(iv)$ Praying Mantis |
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