MCQ Practice Test -Chapter 11 Organisms and Populations

Increased IMR and decreased MMR in a population will?

What do you means by potential natility?

According to the principle of competitive exclusion

Certain characteristic demographic features of developing countries are

Study statements (a - d) and select the two correct statements. 

They may reduce survival, growth and reproduction of host and reduce its population density. They might render organisms more vulnerable to predation by making it physically weak. They are

A population is correctly defined as having which of the following characteristics?

Which best illustrates the competitive exclusion principle?

Parasitism is an interaction between two species in which

Interaction between, two species in which one feeds on the other is

The interaction between the organisms of one of the following pairs is an example for commensalism

A bird introduced from another country became a serious pest due to the

Insects constitute the largest animal group on earth. About 25-30% of the insect species ate known to be herbivores. In spite of such huge herbivore pressure, globally, green plants have persistence. One possible reason for this persistence is:

The capacity of the environment in which a species can get maximum nutrition is called as

If population of a species is transferred to more suitable environment, then it will show

Few interactions are given following. How many of them are not examples of mutualism ?

A sedentary sea anemone gets attached shell lining of hermit crab. The association of?

Which ones are true about interdependence?

Organisms that can tolerate a wide range of salt concentration are termed as

In large natural ecosystems, competition between two species over time will usually result in