Tag: biodiversity, classification and conservation

Questions Related to biodiversity, classification and conservation

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

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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'.

India is among $12$ megadiversity countries of world, due its percentage contribution in global species diversity, that is:-

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

  1. $1.8 \%$

  2. $2.4 \%$

  3. $8.1 \%$

  4. $4.2 \%$

Show answer
Correct Option: C
Explanation:

Megadiversity refers to the diversity in various life forms. India is one of the megadiverse countries where diversity of global species is found. There are 4 biodiversity hotspots (the area where large species diversity is present) in India, they are:

  1. Himalaya
  2. Indo-Burma
  3. Sundaland
  4. The Western Ghats and Sri Lanka
In India, the total area under biodiversity hotspot is about 2.4 % and its contribution to global species diversity is about 7 - 8.5 %.
So, the correct option is '8.1%'.

Which evolutionary force decreases the genetic diversity of a population by increasing the proportion of smaller individuals?

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

  1. Mutation

  2. Gene flow

  3. Bottle neck effect

  4. Random mating

Show answer
Correct Option: C

Quinine is obtained from

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

  1. Leaves of Cinchona

  2. Roots of Cinchona

  3. Bark of Cinchona

  4. Seeds of Cinchona

Show answer
Correct Option: C
Explanation:

Quinine occurs naturally in the bark of the Cinchona tree, though it has also been synthesized in the laboratory. The medicinal properties of the Cinchona tree were originally discovered by the Quechua, who are indigenous to Peru and Bolivia, later the Jesuits were the first to bring Cinchona to Europe.

Thus, the correct option is C.

Tendency of increase of species diversity in transition zone between two community is called as

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

  1. Ecotone effect

  2. Edge effect

  3. Border effect

  4. Complementary effect

Show answer
Correct Option: B
Explanation:

In ecology, edge effects refer to the changes in population or community structures, that occur at the boundary of two habitats. Areas with small habitat fragments exhibit especially pronounced edge effects that may extend throughout the range. As the edge effects increase, the boundary habitat allows for greater biodiversity.