Tag: classification of threatened species

Questions Related to classification of threatened species

Which of the following animal has become recently extinct?

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. Mammoth

  2. Dodo

  3. Dinosaurs

  4. Pterodactyl

Show answer
Correct Option: B
Explanation:

Dinosaurs and pterodactyls (flying reptiles) got extinct about 65 million years ago by the end of the Cretaceous Period. Mammoths were extinct 10,000 years ago. Dodo's were large flightless bird endemic to the island of Mauritius and east of Madagascar. They became extinct 350 years ago due to poaching for their meat. Thus the correct answer is option B.

Species with low population numbers that are in considerable danger of elimination are termed as 

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. Endemic

  2. Extinct

  3. Endangered species

  4. Evolution

Show answer
Correct Option: C
Explanation:
  1. A species whose habitat is restricted to a particular area is known as endemic species. 
  2. A species that has died out and hence is out of site is called extinct species.
  3. A species which is less in number and can be extinct in near future is called endangered species.
  4. The origination and development of new life forms on earth is called evolution.
Thus the correct answer is option 'Endangered species'.

What is the science of extinction called?

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. Dirology

  2. Virology

  3. Pedalogy

  4. Mycology

Show answer
Correct Option: A
Explanation:
  • The science of extinction is called dirology. An endangered species is defined as a population of a living species that is in danger of becoming extinct because of several reasons.
  • Some of the reasons can be the species have a very low population or they are threatened by the varying environmental or prepositional parameters.

    Therefore, the correct answer is option A.

Which one has become extinct form India ?

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. Lion

  2. Dodo

  3. Two - horned Rhino

  4. Tiger

Show answer
Correct Option: C
Explanation:
Option (C)
Two horned Rhino
Two-horned Rhino in Asia(India) Javan-Sumatran are critically endangered. But today very few rhino survice outside national parks and reservers due to persistent poaching and habitat loss over many decades.

Extinct bird Dodo belonged to

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. Australia

  2. India

  3. Indonesia

  4. Mauritius

Show answer
Correct Option: D
Explanation:

The dodo of the genus brisson and family Columbidae is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian ocean. So, the correct answer is 'Mauritius'.

Number of endangered species of angiosperms in India is

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. 487

  2. 3000

  3. 5000

  4. 15,000

Show answer
Correct Option: D

Which group of vertebrates among the following, comprises the highest number of endangered species?

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. Birds

  2. Mammals

  3. Fishes

  4. Reptiles

Show answer
Correct Option: B
Explanation:

An endangered species is a species that is at high risk of becoming extinct. Plants have the highest number of endangered species. Mammals have 177 endangered species which represents 3.8% of all the species. Similarly, birds have 188 endangered species which represents 1.9% of all the species. Reptiles, amphibians and fishes have 47, 32 and 158 endangered species representing 0.7%, 0.7% and 0.6% respectively of all the species in each group.

Thus, the correct answer is option B.

Archaeopteryx is

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. Extinct mammal

  2. Extinct bird

  3. Star Fish

  4. Marine fish

Show answer
Correct Option: B
Explanation:
Arcahaeopteryx is an extinct bird. It is the most primitive known bird with several specimens dating back about 150 million years to the Jurassic bird. It is also known as an evolutionary link between modern birds and a group of dinosaurs that roamed the earth 150 million years ago.
So, the correct answer is 'Extinct bird'.

Number of animal species having become extinct since 1600 AD is

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. 533

  2. 839

  3. 1724

  4. 3700

Show answer
Correct Option: A
Explanation:

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, and position at a higher trophic level favour extinction. 533 animal species have become extinct since 1600 AD.

So, the correct answer is '533'.

Number of plant species known to have become extinct since 1600 AD is

biology main natural resources classification of threatened species red data book conservation of wildlife

  1. 279

  2. 384

  3. 629

  4. 717

Show answer
Correct Option: B
Explanation:

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, and position at a higher trophic level favour extinction. 384 plant species have become extinct since 1600 AD.

So, the correct answer is '384'.