Tag: environmental factors

Quizzes (8) Questions (94)

Questions Related to environmental factors

Multiple choice zoology environmental factors environmental factors and their measurements climate factors marine life

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.
Reveal answer Fill a bubble to check yourself
B Correct answer
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 $CO _2$.

Multiple choice zoology environmental factors environmental factors and their measurements climate factors marine life

Greenhouse gases are

  1. CO$ _{2}$
  2. CH$ _{4}$

  3. CFC

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice zoology environmental factors environmental factors and their measurements climate factors marine life

The blueness of the sky is mainly due to

  1. Absorption of blue light by the atmosphere

  2. Scattering of sunlight by air molecules

  3. Emission of blue light by air

  4. Presence of water vapor
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The blue color of the sky is caused by Rayleigh scattering, where shorter wavelengths (blue light) are scattered more efficiently by air molecules than longer wavelengths.

Multiple choice zoology environmental factors environmental factors and their measurements climate factors marine life

Biome is ____________.

  1. part of the planet and its atmosphere

  2. Interacting communities of organism and its environments

  3. Biotic flora of a place

  4. Biotic fauna of a place
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biome is an interaction between various communities of organisms and the environment they live in. These communities of organisms dwell in similar geographical, climatic and other biotic factors.

Example-Tundra, Grasslands etc
So, the correct answer is 'Interacting communities of organism and its environments'


Multiple choice zoology environmental factors environmental factors and their measurements climate factors marine life

Species diversity generally increases as one
proceeds from


  1. Low altitude to high altitude, and from low latitudes to high latitudes

  2. High altitude to low altitude, and from low latitudes to high latitudes

  3. High altitude to low altitude, and from high latitudes to low latitudes

  4. Low altitude to high altitude, and from high latitudes to low latitudes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The environmental conditions in these region are favourable and hence species have become diversified.

Multiple choice zoology environmental factors environmental factors and their measurements climate factors marine life

During unfavourable conditions most of the fresh water sponges and few marine sponges from gemmules, they are

  1. Reduction bodies

  2. External buds

  3. Internal buds

  4. Masses of interstitial cells surrounded by spicules
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Gemmules are internal buds containing archaeocytes, mostly found in freshwater sponges, these are concerned with asexual reproduction.
These are formed by the sponges under unfavourable conditions.
So, the correct option is 'internal buds'