Tag: biodiversity and need of classification

Questions Related to biodiversity and need of classification

Which of the following disease is now considered nearly eradicated from India?

  1. Plague

  2. Kala azar

  3. Small pox

  4. Influenza


Correct Option: C
Explanation:

Smallpox is a very serious illness caused by a virus, called the variolavirus. Smallpox gets its name from the pus-filled blisters (or pocks), that form during the illness. Small pox is an acute highly communicable disease. It is caused by virus named variolavirus. Now it is nearly eradicated from India.

Choose the correct answers from the alternatives given.
All unicellular organisms with a true nucleus were included in the kingdom

  1. Monera

  2. Protista

  3. Fungi

  4. Protozoa


Correct Option: B

According to, May's global estimates how many species of plants and animals, respectively, are yet to be discovered and described from India? 

  1. 50,000 and 90,000

  2. 3,00,000 and 90,000

  3. 3,00,000 and 1,00,000

  4. 1,00,000 and 3,00,000


Correct Option: D
Explanation:

If we accept May's global estimates only 22% of the total species have been recorded so far. If May's proposal for discovery of new species is accepted then there are probably more than 1,00,000 plant species and more than 3,00,000 animal species yet to discovered and described.

Western ghats have a greater number of amphibian species than the Eastern ghats. What kind of diversity does it represent?

  1. Species diversity

  2. Genetic diversity

  3. Ecological diversity

  4. None of these.


Correct Option: A
Explanation:

Species diversity is the variety in the number and richness of the species of a region, Western Ghats have greater amphibian species diversity as compared to eastern ghats.

Vertical distribution of different species occupying different levels in dense vegetation is called.

  1. Stratification

  2. Species composition

  3. Standing crop

  4. Trophic structure


Correct Option: A
Explanation:

Vertical distribution of different species occupying different levels is called stratification. For example, trees occupy top vertical strata or layer of a forest, strubs the second and herbs and grasses occupy the bottom layers.

The term "the evil quarter" is related with four major causes of 

  1. forest loss

  2. population explosion

  3. air pollution

  4. biodiversity losses.


Correct Option: D
Explanation:

There are four major causes of biodiversity losses which are collectively called as the evil quartet. These are habitat loss and fragmentation, over exploitation, alien species invasion and co-extinctions. 

Fill in the blanks with the most appropriate option. 
The values of z lies in the range of _______ regardless of the taxonomic group or the region.

  1. 0.1 to 0.2

  2. 0.3 to 0.8

  3. 0.1 to 1.0

  4. 0.6 to 1.8


Correct Option: A
Explanation:

Alexander Von Humboldt observed that within a region richness increased with increased explored area, but only upto a limit. If a graph is plotted between species richness and area then we get a rectangular hyperbola. ON a log scale, the relationship becomes linear (straight line) and is described by the equation,

log S = log C + Z log A
where, S = species richness, Z = slope of the line (regression coefficient)
A = are and C = y-intercept
The value of Z ranges between 0.1 and 0.2 irrespective of the taxonomic group for a small area. But, if a larger area is taken into account then the slope is steeper and the vale of Z ranges between 0.6 and  1.2.
So the correct option is '0.1 to 0.2'.

Which of the following countries has the highest biodiversity?

  1. Brazil

  2. South Africa

  3. Russia

  4. India


Correct Option: A
Explanation:

Brazil is the country with the highest biodiversity in the world. One-tenth of the world's overall species lives here.

India is on the eighth spot whereas South Africa is the thirteenth in the list.
Russia has comparatively low biodiversity due to its climate and availability of resources.
So the correct answer is ' Brazil'.