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

The living organisms which can prepare their own food are:

Which one of the following is a parasite:

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

The succession in pond is called:

Moss stage is represented by :

8."Litho" means:

The distinct levels or link of food chain are called:

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

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

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

In xerosere, Polytrichum and tortula represent:

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

How does a predators react to population density of prey?

The animal that is caught and eaten is called :

Charles Eton defined the niche as the species's :

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

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

All the food chains begin with:

Which one of the following refers to commensalisms:

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

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

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

Who proposed the term Niche in Ecology:

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

Elements required in large amounts are called:

Succession starts on dry soil is called:

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

Which one of the following is autotroph:

C.Eton defined the Niche as the species

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

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

In 1917, term niche was first proposed by AmericanOrnithologist named

Synecology is also known as the

The relationship between insects and flowering plants is the example of

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

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

Lithosphere includes:

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

3.Regional ecological community of plants & animals form:

7."Atrno" means:

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

Land lifeless structure is referred by the stage:

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

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

Once nitrate enters the plant cell it is reduced as:

The seral stages of a primary succession are:

Biome is a :

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

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

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

Study of single population relationship to its environments is called

If population of predator increases then population of prey.

Study of relationship of different communities to environment is called:

Climax is the establishment of

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

Who defined the niche as the species occupation ?

Consumer that preys other animals is known as:

The major compononts of ecosystem are:

The abiotic component of an ecosystem is :

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

Diseases in living organisms caused by parasites are called:

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

Nitrogen is balanced by:

The term niche was proposed by:

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

In ecosystem the word teco is related to:

10.Food chains combine to form:

The role played by an individual in a communtiy is :

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

The succession which occur in dry soil or rock is:

Balance of ecosystem is kept by:

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

Lichens are an example of :

Primary succession starting in a pond is called:

Which one of the following is an ectoparasite:

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

Grazera feeds on:

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

Herbaceous stage in xerosere is the

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

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

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

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