Biology Chapter No.11 Ecosystem 2nd Year Online Quiz MCQs Test pdf

Diseases in living organisms caused by parasites are called:

In a grassland food chain, what is the correct sequence:

An association between two organisms by which both are benefited is called:

Lithosphere includes:

Intfestations are the diseases which are caused by _______ in living organisms.

Microorganisms while use protein, release ammonia. This process is:

Which one is responsible for the conversion of nitrites into nitrates ?

A loclized group of individuals belonging to the same species is called as :

Which one of the following is a parasite:

3.Regional ecological community of plants & animals form:

Balance of ecosystem is kept by:

All the food chains begin with:

C.Eton defined the Niche as the species

The bacteria in the root nodules fix nitrogen and convert it into:

The relationship between insects and flowering plants is the example of

The major compononts of ecosystem are:

The distinct levels or link of food chain are called:

Study of relationship of different communities to environment is called:

One of the following is an example of predator-prey relationship:

Herbaceous stage in xerosere is the

The total production of organic matter by green plants minus respiratory loss is called :

10.Food chains combine to form:

One of the following is an example of predator-prey relationship:

In 1917, term niche was first proposed by AmericanOrnithologist named

If population of predator increases then population of prey.

How does a predators react to population density of prey?

Which one of the following is an ectoparasite:

Group of individuals which can interbreed & produce organisms of their own kind form a:

Charles Eton defined the niche as the species's :

5.The relationship of a single population towards its environment is called:

Grazera feeds on:

The process in which micro-organisms use the proteins and amino acids and release ammonia of ammonium ions is known as :

Of the total sunlight that strikes the earth, what amount of it is absorbed by photosynthetic machinery?

The animal that is caught and eaten is called :

The actual location of place, where an organism lives is called Its:

9.Fungi as well as bacteria are generally known as:

The change In structure of community of an ecosystem during a time

Climax is the establishment of

The succession in pond is called:

In xerosere, Polytrichum and tortula represent:

Primary succession starting in a pond is called:

The role played by an individual in a communtiy is :

Once nitrate enters the plant cell it is reduced as:

The total energy from sun is trapped by producer in an ecosystem is:

Which one of the following refers to commensalisms:

Consumer that preys other animals is known as:

A group of inter-breeding individuals, beloging to same species and sharing a common geophraphic area, is called :

Which one of the following is autotroph:

4.Layer of earth where life is present is called:

A symbiotic relationship that benefits one species & neither helps nor harms the other is called:

The actual location of place, where an organism lives is called Its:

Who defined the niche as the species occupation ?

A change In the community, structure of an ecosystem over a period of time is :

Who proposed the term Niche in Ecology:

8."Litho" means:

Lichens are an example of :

The bacteria In the root nodules fix nitrogen and convert it into:

In which of the following from nitrogen enters into plant bodies ?

Production of new organic matter at the consumers level is called :

The bacteria living in the root nodules of the legume plants serve to fix atmospheric.

The study of relationships of organisms to their environment is known as:

Moss stage is represented by :

In each case succession is initiated by a few hardy invaders called:

Synecology is also known as the

Land lifeless structure is referred by the stage:

Group of interbreeding organisms residing together in space & time are:

The abiotic component of an ecosystem is :

The seral stages of a primary succession are:

During energy transformation at different trophic leVels, the energy lost as heat is in range:

Nitrogen is balanced by:

The term niche was proposed by:

In ecosystem the word teco is related to:

The total energy from sun is trapped by producer in an ecosystem is:

Biome is a :

The living organisms which can prepare their own food are:

7."Atrno" means:

Elements required in large amounts are called:

When bacteria in soil oxidize ammonia or ammonium ions, this Is called:

Succession starts on dry soil is called:

What is the net production of the total photosynthate after the use by plants themselves?

The succession which occur in dry soil or rock is:

6.The study of growth responses of plant is called:

Study of single population relationship to its environments is called