Tag: marine life

Questions Related to marine life

Exposure to ultraviolet rays can cause:

  1. Sun burn

  2. Actinic keratosis

  3. Solar elastosis

  4. All of above


Correct Option: D

______________ is diffused into the ground by gravitational force.

  1. Rain water

  2. Ocean

  3. River water

  4. None of the above


Correct Option: A

What are names of aquatic biomes?

  1. Marine and fresh water

  2. Oceans and lakes

  3. seas and streams

  4. streams and ice cape


Correct Option: A

'turbidity' can be measured through

  1. Turbid meter

  2. Turbid

  3. Thermometer

  4. Barometer


Correct Option: A

What is outer limit of stratosphere?

  1. 30 km

  2. 50 km

  3. 60 km

  4. 40 km


Correct Option: B

Sum of all the factors form the ___________.

  1. Ecosystem

  2. Environment

  3. Habitat

  4. Niche


Correct Option: B
Explanation:

There are many external forces, substances or condition which affect the living organisms in one or the other way. They are considered as factors. These entire factors combine together to form an environment.

Heated water has a harmful effects on

  1. Marine life

  2. Land animals

  3. Birds

  4. Seashore birds


Correct Option: A

When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?

  1. It moves along with oxygen into the cells

  2. It comes out with the $CO _2$ during exhalation

  3. It is absorbed only by the nasal cells.

  4. Nitrogen concentration is already more in the cells so it is not at all absorbed.


Correct Option: B
Explanation:

In atmosphere, the nitrogen is present in large quantity about 78%. In our body, nitrogen is about 3%. During inspiration we take $O _2$ with various gases and nitrogen is one of them. During exhalation, the nitrogen comes out with $CO _2$.

Greenhouse gases are

  1. CO$ _{2}$

  2. CH$ _{4}$

  3. CFC

  4. All of these


Correct Option: D
Explanation:

Green house gases (e.g. CO$ _{2}$, CH$ _{2}$, CFCs etc.) are increasing in the atmosphere due to human and natural activities. These gases trap the heat(infra-red radiation) reflected by the earth. This heats up the atmosphere(leads to an increase in earth's temperature). This phenomenon is called global warming which occurs due to green house effect.