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

If population of predator increases then population of prey.

Nitrogen is balanced by:

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

Charles Eton defined the niche as the species's :

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

Land lifeless structure is referred by the stage:

Herbaceous stage in xerosere is the

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

In 1917, term niche was first proposed by AmericanOrnithologist named

Moss stage is represented by :

3.Regional ecological community of plants & animals form:

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

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

7."Atrno" means:

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

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

The major compononts of ecosystem are:

Succession starts on dry soil is called:

How does a predators react to population density of prey?

Lichens are an example of :

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

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

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

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

Biome is a :

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

Elements required in large amounts are called:

All the food chains begin with:

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

The succession in pond is called:

Which one of the following is an ectoparasite:

10.Food chains combine to form:

Consumer that preys other animals is known as:

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

Study of relationship of different communities to environment is called:

Diseases in living organisms caused by parasites are called:

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

8."Litho" means:

The succession which occur in dry soil or rock is:

Which one of the following is a parasite:

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

The abiotic component of an ecosystem is :

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

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

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

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

The living organisms which can prepare their own food are:

Which one of the following is autotroph:

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

Lithosphere includes:

Once nitrate enters the plant cell it is reduced as:

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

The distinct levels or link of food chain are called:

Primary succession starting in a pond is called:

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

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

In ecosystem the word teco is related to:

Study of single population relationship to its environments is called

C.Eton defined the Niche as the species

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

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

Grazera feeds on:

The term niche was proposed by:

Climax is the establishment of

The animal that is caught and eaten is called :

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

The seral stages of a primary succession are:

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

Balance of ecosystem is kept by:

Who proposed the term Niche in Ecology:

Synecology is also known as the

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

Who defined the niche as the species occupation ?

Which one of the following refers to commensalisms:

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

The relationship between insects and flowering plants is the example of

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

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

The role played by an individual in a communtiy is :

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

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

In xerosere, Polytrichum and tortula represent:

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