Tag: levels of biodiversity

Questions Related to levels of biodiversity

Which of the following is incorrect?

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. Stellars Sea Cow and Passenger Pigeon got extinct due to over exploitation

  2. Lantana and Eichhornia are invasive weed species in India

  3. Species diversity increases from equator to poles

  4. Convention on biological diversity was held in 1992

  5. Among animals, insects are the most species rich taxonomic group

Show answer
Correct Option: C
Explanation:

Species diversity decreases from equator to poles. The reason lies behind the fact that the conditions for the survival of species at poles become unfavorable. The Equator has favorable conditions for the survival of wildlife. Good vegetation, sunlight, and habitat these factors are responsible for great biodiversity at the equator.

So, the correct answer is 'Species diversity increases from equator to poles'.

Which one shows maximum genetic diversity in India?

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. Groundnut

  2. Rice

  3. Maize

  4. Mango

Show answer
Correct Option: D
Explanation:
Genetic diversity represents the total number of genetic characteristics in the genetic makeup of a species. Whereas, the genetic variability describes the tendency of genetic characteristics to vary. This diversity lets the population adapt to changing environments. For example, In India, we find mangoes with different flavors, colors, fiber content, sugar content, and shelf life, as it has the greatest genetic diversity in our country. The great variation is due to the genetic diversity. 
So, the correct answer is 'Mango'.

Which region is rich in species diversity?

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. North Pole

  2. Temperate region

  3. Tropical region

  4. South Pole

Show answer
Correct Option: C
Explanation:

Species diversity increases towards the equator. The two main reasons are phylogenetic niche conservatism and ecological productivity. The relatively high temperatures in the tropics generate and maintain high diversity. However, the tropical rainforests in developing countries are getting cleared nowadays, which is leading to a great loss of biodiversity.

So, the correct answer is 'Tropical region'.

Indian share in global species diversity is about

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. 8%

  2. 6%

  3. 4%

  4. 2%

Show answer
Correct Option: A
Explanation:

Great biodiversity exists on our planet. Millions of living plants and animal species are flourishing on Earth. An approximate of 1.7 million organisms are known to exist. New species are getting discovered and recorded every year. Indian share in global species diversity is about 8%.

So, the correct answer is '8%'.

Which one has the largest species variety in India?

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. Potato

  2. Maize

  3. Wheat

  4. Rice

Show answer
Correct Option: D
Explanation:

Species diversity is the number of different species that are represented in a given community. In India, rice has the largest species diversity or variety. India has 6,000 species variety of rice. The number has greatly reduced from before. The commonest rice is basmati rice.

So, the correct answer is 'Rice'.

Which of the following statements is correct?

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. Species diversity, in general, increases from poles to the equator

  2. Conventional taxonomic methods are equally suitable for higher plants and microorganisms

  3. Indias share of global species diversity is about 18%

  4. There are about 25000 species of plants in India

Show answer
Correct Option: A
Explanation:
In general, species diversity, in general, increases from poles to the equator. With very few exceptions, tropics (latitudinal range of 23.5° N to 23.5° S) harbor more species than temperate or polar areas. The reason is that tropical environments, unlike temperate ones, are less seasonal, relatively more constant and predictable. Such constant environments promote niche specialization and lead to greater species diversity.
So, the correct answer is 'Species diversity, in general, increases from poles to the equator'.

Who observed that within a region, species richness increased with increasing explored area but only upto a limit?

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. Paul Ehrlich

  2. David Tilman

  3. Alexander von Humboldt

  4. Edward Wilson

  5. Robert Mayr

Show answer
Correct Option: C
Explanation:
During his pioneering and extensive explorations in the wilderness of South American jungles, the great German naturalist and geographer Alexander von Humboldt observed that within a regional species richness increased with the increasing explored area, but only up to a limit. In fact, the relationship between species richness and area for a wide variety of taxa (angiosperm plants, birds, bats, freshwater fishes) turns out to be a rectangular hyperbola. On a logarithmic scale, the relationship is a straight line described by the equation log S = log C + Z log A where S= Species richness A= Area Z = slope of the line (regression coefficient) C = Y-intercept.
So, the correct answer is 'Alexander von Humboldt'.

India is one of the twelve megadiversity countries with ______ of genetic resources of the world.

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. 12.1%

  2. 18.1%

  3. 38.1%

  4. 8.1%

Show answer
Correct Option: D
Explanation:
Although India has only 2.4 per cent of the world’s land area. But its share of the global species diversity is an impressive 8.1 percent. That is what makes our country one of the 12 megadiversity countries of the world. Nearly 45,000 species of plants and twice as many of animals have been recorded from India. 
So, the correct answer is '8.1%'.

Black buck, golden langur and Asiatic wild ass are likely to be in danger of extinction. This species belongs to

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. Extinct

  2. Endangered

  3. Vulnerable

  4. Rare

Show answer
Correct Option: B
Explanation:

Blackbuck, Golden langur, and Asiatic wild ass are likely to be in danger of extinction and are classified as endangered (as their population is decreasing) by IUCN red data list.

So, the correct answer is 'Endangered'.

Regional diversity is also called

zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

  1. Alpha diversity

  2. Beta diversity

  3. Gamma diversity

  4. Ecosystem diversity

Show answer
Correct Option: B
Explanation:
Alpha diversity refers to the average species diversity of a habitat. Beta diversity is the diversity species between two habitats or regions and is given by the ratio between local (alpha species diversity) and regional species diversity. It is also known as the regional species diversity. Gamma diversity is the total diversity of a landscape.
So, the correct option is 'Beta diversity'.