Give one example for each of the following :

$(i)$ Eurythermal plant species $ .................$  .

$(ii) $ A hot water spring organism $ .................$  .

$(iii)$ An organism seen in deep ocean trenches $ ................$.

$(iv)$ An organism seen in compost pit $ ...............$  .

$(v)$ A parasitic angiosperm $ .................$  .

$(vi)$ A stenothermal plant species $ .................$  .

$(vii)$ Soil organism $ .................$  .

$(viii)$ A benthic animal $ .................$  .

$(ix)$ Antifreeze compound seen in antarctic fish $ .................$  .

$(x)$ An organism which can conform $ .................$  .

Which element is responsible for causing soil salinity ? At what concentration does the soil become saline ?

$I.$ Biochemical adaptation are seen in organisms living in great depth of the ocean to face crushing pressure

$II.$ Allen's rule is explain mammals living in colder climates

$III.$ Altitude sickness is caused because of body not getting enough oxygen due to low atmospheric pressure at high altitude

$IV.$ Desert lizards lack behavioural means to manage to their body temperature

Choose the correct option for above adaptations

Weather is the

If a fresh water fish is placed in an aquarium containing sea water, will the fish be able to survive ? Explain giving reasons.

An area of soil is thoroughly wetted and allowed to drain until capillary movement of water stopped. The water contents of the soil will give an estimate of its