Q9 of 70 Page 95

Do you agree that regional and local variations exist within each biome? Substantiate your answer with suitable example.

Yes regional and local variations exist within each biome.

A biome can be defined as the large communities of the world. Climate is the main factor that determine the type of soil which in turn determines the type of vegetation. The type of vegetation and climate together determine the kind of microorganisms and animals.


The main biome of the world does not show boundary of any country. Regional and local variations lead to formation of a wide variety of habitats.


For examples:


> On earth, life exists even in extreme and harsh habitats – scorching Rajasthan desert, perpetually rain-soaked Meghalaya forest, deep ocean trenches, torrential streams, permafrost Polar Regions, hign mountain tops, boiling thermal springs and stinking compost pits, etc.


> Even our intestine is a unique habitat for hundreds of species of microbes.


> Temperate deciduous forest receive an annual precipitation between 75-150 cm and tropical rain forest show a rainfall above 140 cm/yr which may reach upto 400 cm/yr.


More from this chapter

All 70 →
7

In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gause’s Principle, one of the species is to be eliminated in due course of time, but both are surviving well in the aquarium. Give possible reasons.

 8

While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.

 10

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

 11

Does light factor affect the distribution of organisms? Write a brief note giving suitable examples of either plants or animals.