Home
Class 12
BIOLOGY
Give three hypotheses for explanining wh...

Give three hypotheses for explanining why tropics show greatest levels of species richness.

Text Solution

Verified by Experts

a. Tropical regions have remained relatively undisturbed for millions of years and thus had a long time for species diversification.
b. Tropical environments are less seasonal, relatively more constant and predictable.
c. Availability of more solar energy and this contributes much productivity.
Promotional Banner

Topper's Solved these Questions

  • BIODIVERSITY AND CONSERVATION

    NEW JOYTHI PUBLICATION|Exercise NEW EVALUATION TYPE QUESTIONS|38 Videos

  • BIODIVERSITY AND CONSERVATION

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM EDUMATE|4 Videos

  • BIOTECHNOLOGY : PRINCIPLES AND PROCESSES

    NEW JOYTHI PUBLICATION|Exercise CBSE Corner|12 Videos

Similar Questions

Explore conceptually related problems

Assertion : Biodiversity hotspots are the regions which possess high levels of species richness, high degree of endemism and no loss habitats. Reason : Total number of biodiversity hotspots in the world is 32 with two of these hotspots found in India. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

What is species richness ? Give example.

Which of the following statements regarding biodiversity hotspots are incorrect? (i) High endemism (ii) High level of species richness (iii) Total number is 34 in the world (iv) Five of these occur in India (v) High alien species invasion (vi) Cover less than 2% of the earth's land area, but if properly conserved, they can reduce extinctions by about 30% (a) (i) and (ii) (b) (iv) and (v) (c) iv), (v) and (vi) (d) (iii), (iv), (v) and (vi)

Explain the three level of impact of extinction of species.

Give reason why aquatic species are less sustained in hot water ?

If the carbon atoms fixed by producers already have passed through three species, the trophic level of the last species would be

Figure. gives a speed-time graph of a particle in motion along a constant direction. Three equal intervals of time are shown. In which interval is the average acceleration greatest in magnitude ? In which interval is the average speed greatest ? Choosing the positive direction as the constant direction of motion, give the signs of v and a in the three intervals. What are the accelerations at the points A, B, C and D ?

Gopalan cultivated a variety of fruit crops and plants in his field and Raman destroyed the fruit crops and plants and cultivated rubber trees which are double in number. a. In your opinion which method is suitable for the ecosystem? Give reason. b. mention any three factors for the extinction of species.

Figure. gives the x-t plot of a particle in one-dimensional motion. Three different equal intervals of time are shown. In which interval is the average speed greatest, and in which is it the least ? Give the sign of average velocity for each interval.

Figure below shows tracks of three charged particles in a uniform clectrostatic field. Give the signs of the three charges. Which partiele has the highest charge to mass ratio?