Tag: threatened species

Questions Related to threatened species

A species restricted to a given area is

  1. Endemic species

  2. Allopatric species

  3. Sympatric species

  4. Sibling species


Correct Option: A
Explanation:

Endemic means a species which is native to a place and is not found anywhere else in the world. Endemic basically means indigenous. The more endemic species at a place more is the biodiversity of that place. For example, the Nilgiri tahr also known as Nilgiri Ibex is endemic to the Nilgiri Hills and some part of Western Ghats of Kerala.

So, the correct answer is 'Endemic species'.

Peculiar primitive animals found in Madagascar but absent in Africa are

  1. Elephants

  2. Lemurs

  3. Penguins

  4. Echidnas


Correct Option: B
Explanation:

Peculiar primitive animals found in Madagascar but absent in Africa are Lemurs. For example, Indri indri lemur also known as babakoto is the largest living lemur on Earth. It as a head-and-body length of about 64–72 cm (25–28 in) and a weight of between 6 to 9.5 kg (13 to 21 lb). It occurs in Madagascar. It plays an important part in the myths of the residents of Madagascar, and legends with various stories in existence accounting for its origin. According to IUCN, it is classified as a critically endangered species.

So, the correct answer is 'Lemurs'.

Islands have higher number of endemic species as they are separated from other land masses by

  1. Deserts

  2. Mountains

  3. Large expanses of water

  4. Valleys


Correct Option: C
Explanation:

Endemic species are species which are native to a place and are not found anywhere else. Islands have a higher number of such as they are separated from other land masses by large expanses of water. Communities in such islands are called as oceanic island communities. Human intervention is less because of the water and thus endemism is high.

So, the correct answer is 'Large expanses of water'.

Which is an endemic plant?

  1. Nepenthes khasiana

  2. Riccia discolor

  3. Vernonia cinerea

  4. Cynodon dactylon


Correct Option: A
Explanation:

Nepenthes khasiana is an endemic plant to India. It is the only species of pitcher plant which is endemic to our country. Endemic means a species which is native to a place and is not found anywhere else in the world. Endemic basically means indigenous. The more endemic species at a place more is the biodiversity of that place. For example, the Nilgiri tahr also known as Nilgiri Ibex is endemic to the Nilgiri Hills and some part of Western Ghats of Kerala. So, the correct answer is 'Nepenthes khasiana'.

An endemic taxon is one.

  1. Whose distribution is restricted to a small area

  2. Which is distributed widely

  3. Which is endangered

  4. Which is economically important


Correct Option: A

Approximate percentage of endemic flowering plants in India is

  1. 23

  2. 33

  3. 53

  4. 63


Correct Option: B
Explanation:

A) The correct answer is 33%.

B) The approximate percentage of endemic flowering plants in India is 33%.
C) The percentage of endemic species is only 33%.
D) The percentage of endemic species is not as high as 63%.
So the correct answer is '33'.

Endemic species are

  1. rare species

  2. species localised in a specific region

  3. cosmopolitan in distribution

  4. critically endangered species


Correct Option: B

Crocodiles found in India are 

  1. Crocodylus potostis and Crocodylus palusrris

  2. Crocodylus palustris and Gavialis gangeticus

  3. Gavialis gangeticus and Crocodylus porosus

  4. Crocodylus porosus, Crocodylus palustris and Gavialis gangeticus


Correct Option: D
Explanation:
There are 3 crocodiles found in India. The Mugger crocodile (Crocodylus palustris), Gharial (Gavialis gangeticus) and the saltwater crocodile (Crocodylus porosus). In India, their habitat includes lakes and rivers.
The Mugger crocodiles are found throughout India in almost all rivers. The saltwater crocodile is found in the eastern states of Odisha, West Bengal and Tamil Nadu. The Gharials are found in only some rivers of India which includes Chambal, Ganges, Yamuna, Kali, Kosi, Gandak. Hence, the correct answer is option D.

The Indian wild ass (Asinus hemionus) is found in 

  1. Garhwal Himalayas

  2. Plateau of Ladakh

  3. Thar deser

  4. Rann of Kutch


Correct Option: D
Explanation:
Indian wild ass (Equus hemionus) is only found in the little Rann of Kutch.
It is protected in the sanctuary, known as the Wild Ass Wildlife Sanctuary located in the little rann of kutch in the Gujarat. It was established in 1972 under the Wildlife protection Act of 1972.
So, the correct answer is option A.

Incorrect match for endemism amongst species is

  1. India- 47%

  2. Australia- 80%

  3. Hawaii- 82%

  4. None of the above


Correct Option: D
Explanation:

Endemic species are restricted to a given area for various reasons like some special requirements for optimum growth, soil and other environmental conditions etc. India ranks 47%, Australia - 80% and Hawaii- 82%.

Therefore, the correct answer is option D.