Population
Population: Overview
This topic covers concepts such as Gause's Principle, Population Interactions, Positive Interactions, Commensalism, Mutualism, Negative Interactions, Parasitism, Predation, Competition among Species, Amensalism, etc.
Important Questions on Population
In a pond, there were 40 lotus plants. After a year, the number rose to 56. The birth rate of a lotus plant would be:

Essential information that can be obtained by studying the population density of an organism is,


The egrets always forage close to where the cattle are grazing. The interaction between them can be called:

Which of the following interactions play a key role in keeping an eye on the number of the population?

Which of the following variable is not involved in the exponential growth curve?

In the population growth curves shown below, ‘a’ and ‘b’ is representing:

Find the correct match of the organisms with the interaction they exhibit:
(a) Cuscuta growing on a shoe flower plant i)Brood Parasitism
(b) Mycorrhizae living on the roots higher plants. ii)Commensalism
(c) Clownfish living among the tentacles of a sea anemone. iii)Mutualism
(d) Koel laying her eggs in the crow’s nest. iv)Parasitism


Territoriality occurs as a result of


The symbiotic relationship of algae and fungus is found in

What is population explosion? State two steps to overcome population growth rate.

Distinguish between the following-
Commensalism and Mutualism.




Tapeworm is an example of endoparasite.

The organisms that live inside the body of an organism are called _____.

Give the difference between endoparasites and ectoparasites.
