Tag: marine life

Questions Related to marine life

Trenches' are also used for

  1. Incineration

  2. Landfilling

  3. Compositing

  4. Pulverization


Correct Option: B

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


Correct Option: B

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


Correct Option: B
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'


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


Correct Option: C
Explanation:

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

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


Correct Option: C
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'

The prefix mega-indicates

  1. Million times

  2. Hundred times

  3. Thousand times

  4. 1 lakh times.


Correct Option: A

Sulphur shower condition is related to

  1. Moss

  2. Selaginella

  3. Fern

  4. Pinus


Correct Option: D
Explanation:

Sulphur shower : In the month of May, on hills the  yellow Pollen grains of Pinus Plants are Produced in lot of number and are scattered in air.

Acclimatization is

  1. Pure-line breeding

  2. Pure-line selection

  3. Introduction

  4. Adaptation to new environment


Correct Option: D
Explanation:

Acclimatization is the development of a favourable morphological and physiological response to a change In environment.


An endotherm

  1. Grasshopper

  2. Hydra

  3. Earthworm

  4. Blue jay

  5. Frog


Correct Option: D
Explanation:

The organisms that use external heat to maintain their body temperature are termed as ectotherms while those maintaining their body temperature using the metabolic heat are termed as endotherms (mammals and aves). Among the given options, Blue jay (aves) is endotherms. 

Therefore, the correct answer is option D.

State whether the following statements are true or false .
All living things contain a vital force that gives them the characteristics of life.

  1. True

  2. False


Correct Option: A
Explanation:

At the molecular level even living things are fundamentally made up of all the elements that make non-living matter. There have been attempts to make these molecules and their integration to create life by scientists but none of them has been successful yet. Hence, it is often believed that there is a vital force that can not be created by us that gives organisms characteristics of life. 

So, the correct option is 'True'.