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Organisms And Populations

Question

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Explain brood parasitism with the help of an example.

Solution

Brood parasitism is a type of parasitism in birds in which the parasitic bird lays its eggs in the nest of its host and lets the host incubate them. For example, cuckoo (koel) lay its eggs in the nest of crow. During the course of evolution, the eggs of the parasitic bird have evolved to resemble the hosts egg in size and colour to reduce the chances of the host bird detecting the foreign eggs and ejecting them from the nest.

Some More Questions From Organisms and Populations Chapter

To live in groups is beneficial because :

Ants give information to their companions :

Population density is denoted by the symbol

The number of births during a given period in the
population that are added to the initial density is
:

The departure of a individual from a population is called :

In which interaction only one species is benefitted while the other species is neither harmed nor benefitted ?

Which of the following interaction both species suffer ?

In which of the following interaction both species are benefitted ?

Fill in the blanks with suitable words :

1. The optimal capacity of the organism to produce offspring is called........................

2. Rapid increase in human population is called........................

3. Mathematical expression of the growth of population is called........................

4. Yeast cells grown in a culture medium show........................growth curve.

5. Main cause of population explosion is........................

State true or false :

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