Tag: zoology

Questions Related to zoology

Interaction of species with environment is known as

zoology conservation of environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Ecosystem

  2. Community

  3. Predation

  4. Biosphere

Show answer
Correct Option: A
Explanation:

  • Ecosystem is the phenomenon that includes the occurrence and distribution of organisms in the ecosystem and the interaction of species with the environment. 
  • It includes abiotic factors such as air, water, soil and biotic factors such as humans, animals, microorganisms. Community includes more that one type of species interacting with each other in a population. 
  • The biosphere is the part of the earth in which life exists.

So the correct answer is 'Ecosystem.'

The scientists who study ecosystems are called

zoology different ecosystems eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Ecologists

  2. Economists

  3. Engineers

  4. Environmentalists

Show answer
Correct Option: A
Explanation:

The study of the ecosystem is called "ecology'. The scientists who study the ecosystem are called "ecologists."

Arthur Tansley, who coined the term ecosystem, is known as the first ecologist.
So the correct option is A.

Ecosystem means

zoology different ecosystems eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. A community of organisms interacting with the environment in which they live

  2. Abiotic components

  3. Organisms reacting with one another

  4. Earth and its atmosphere

Show answer
Correct Option: A
Explanation:

The abiotic and biotic components and their interaction with each other combines to form a ecosystem. The biotic components means the living organisms and the abiotic components means the non living factors present in the environment. So, the correct option is A.

Which of these is not an ecosystem?

zoology different ecosystems eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Desert

  2. Grassland

  3. Town

  4. Tree

Show answer
Correct Option: C

The two components of biosphere are

zoology living in harmony eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Biotic and abiotic

  2. Plants and animals

  3. Algae and fungi

  4. None of the above

Show answer
Correct Option: A
Explanation:

The biosphere is the area around the earth that consists of living beings along with the non-living matter around them.

The living component of the biosphere is called biotic component and the non-living component of the biosphere is called the abiotic component. So, the biosphere is made up of both living and non-living components.
So, option A " Biotic and Abiotic" is the correct option.

Plants and animals are biotic component in an ecosystem.

zoology different ecosystems eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

An ecosystem may be said to be the sum total of all living organisms and nonliving things around us. Living organisms constitute the biotic component of the ecosystem while nonliving things constitute the nonliving one's. 

So, option A is the correct answer.

Which of these are positive influences of human beings on the ecosystem?
A. Declaring areas as wildlife sanctuaries
B. Increasing biodegradable packing materials that can be recycled
C. Removing pollutants from toxic industrial smoke
D. Using the natural resources intensively

zoology living in harmony eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. A,B

  2. B,C

  3. A,B,C

  4. B,C,D

Show answer
Correct Option: C

Which one of the following is not a nitrogen-fixing organism ?

zoology microbes in human welfare biofertilizers microbes as biocontrol agents and biofertilizers manuring

  1. Anabaena

  2. Nostoc

  3. Azotobacter

  4. Pseudomonas

Show answer
Correct Option: D
Explanation:
Anabaena, Nostoc and Azolobacter help in nitrogen fixation. But Pseudomonas perform Denitrification which is the reduction of nitrates back into Nitrogen gas.
So, the correct option is 'Pseudomonas'

Which of the following statements is/are incorrect ?
(i) Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial habitats.
(ii) Anabaena, Nostoc and Oscillatoria are photosynthetic $N _2$ - fixing cyanobacteria.
(iii) Tolypothrix (BGA) can increase rice production by about 20%.
(iv) BGA add organic matter to the soil and increase its fertility.
(v) In our country, fertilizers are not available commercially in the markets for farmers.

zoology microbes in human welfare biofertilizers microbes as biocontrol agents and biofertilizers manuring

  1. (v) Only

  2. (iv) Only

  3. (iii) Only

  4. None of these

Show answer
Correct Option: A
Explanation:

Biofertilizers are available commercially in our country for farmers.

So, the correct option is '(v) Only'

Which of the following is widely used as a successful biofertiliser in Indian rice fields?

zoology microbes in human welfare biofertilizers microbes as biocontrol agents and biofertilizers manuring

  1. Rhizobium

  2. Acacia arabica

  3. Acalypha Indica

  4. Azolla pinnata

Show answer
Correct Option: D
Explanation:

Azolla pinnate is a small free-floating freshwater fern which is widely used as a biofertiliser in Indian rice fields. So, the correct answer is D.