Tag: commercial applications

Questions Related to commercial applications

Which of the following is not the category of mineral?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Metallic mineral

  2. Precious mineral

  3. Non-metallic mineral

  4. Abrasive mineral

  5. None of these

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Correct Option: B

In placer deposits, you are likely to find which of the following minerals?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Mica

  2. Gold

  3. Coal

  4. Bauxite

Show answer
Correct Option: B
Explanation:

 Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.

Which mine is known as 100 percent export unit?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Chitradurga

  2. Tamkur

  3. Kudremukh

  4. Bellary

Show answer
Correct Option: C
Explanation:
The Kudremukh mines located in the Western Ghats of Karnataka are a 100 per cent export unit. Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangalore.

Which of the following statements is correct?

commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

  1. Parthenium is an endemic species of our country.

  2. African catfish is not a threat to indigenous catfishes.

  3. Steller's sea cow is an extinct animal.

  4. Lantana is popularly known as carrot grass.

Show answer
Correct Option: C
Explanation:

Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian discovered by Europeans in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia; its range was more extensive during the Pleistocene epoch, and it is possible that the animal and humans previously interacted. Some 18th-century adults would have reached weights of 8–10 t (8.8–11.0 short tons) and lengths up to 9 m (30 ft). Steller's sea cow was named after Georg Wilhelm Steller, a naturalist who discovered the species in 1741 on Vitus Bering's Great Northern Expedition when the crew became shipwrecked on Bering Island. Much of what is known about its behavior comes from Steller's observations on the island, documented in his posthumous publication On the Beasts of the Sea. Within 27 years of discovery by Europeans, the slow-moving and easily caught mammal was hunted into extinction for its meat, fat, and hide.

So the correct option is 'steller's sea cow is an extinct animal'.

The animal which lives in polar regions is 

commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

  1. Nightingale

  2. Frog

  3. Polar bear

  4. Fish

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Correct Option: C
Explanation:

The polar bear is completely adapted for its survival in the cold polar regions. It has white furry skin, that helps it survive the extremely cold climate conditions. It has paws and feet so that it can move swiftly in snow. It can also hide as it gets camouflaged in white snow.

So, option C is the correct answer.

Define endemic species?

commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

  1. Those kind of species of plants and animals which are found everywhere in the world.

  2. Those kind of species of plants and animals which are not found everywhere in the world.

  3. Those kind of species of plants and animals which are found exclusively in a particular area of the world.

  4. None of the above.

Show answer
Correct Option: C
Explanation:

Different species require different temperature and climatic conditions to survive and reproduce. They can survive only in those particular areas which have favourable conditions for them. Such species are known as endemic species of that particular area or zone or state or country.

Thus, the correct answer is option C.

Which of the following best defines species?

commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

  1. A group of organisms that occupy the same niche.

  2. A population that works together to defend itself from predators.

  3. A group of organisms that can mate with each other.

  4. A population that preys on other populations.

  5. A population in which all members benefit from the association in some way.

Show answer
Correct Option: C
Explanation:

Species is a group of individuals that can potentially interbreed to produce fertile offspring. Splitting of existing species into daughter species or transformation of existing species into a new one without formation of any lineage species is termed as speciation. 

Therefore, the correct answer is option C.

The organisms spending most of the time in transitional area between two communities are called


commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

  1. Exotic species

  2. Edge species

  3. Keystone species

  4. Critical link species

Show answer
Correct Option: B
Explanation:

 The species which are found primarily, most abundantly or spend most of their time in ecotone or community boundary are known as edge species.

Which of the following is restricted to a specific area?

commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

  1. Allopatric species

  2. Sympatric species

  3. Sibling species

  4. Endemic species

Show answer
Correct Option: D

An animal surviving only in a particular area is

commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

  1. Eurybaric

  2. Endemic

  3. Pandemic

  4. Eurychoric

Show answer
Correct Option: B
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. Another example includes 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'.