Organisms and P...

Sigmoid growth curve define by

Population density means

Which of the following factors regulate human life with
reference to population density

The population density is highest in

If the rate of addition of new members increases with respect
to the individual host of the same population, then the
graph obtained has

Which one of the following has classified plants on the basis of temperature of the region?

Assertion : Natality rate increases the population size and population density both.

Reason : Natality increases the number of individuals in an area by births.

Assertion : Relationship between sea anemone and hermit crab is said to be an example of obligate mutualism.

Reason : Obligate mutualism is a positive (benefical) interaction between two species.

The carrying capacity of a population is determined by its

Match the following with correct combination

Column I                         Column II

A Mutualism                   1 Tiger and deer
B Commensalism           2 Cuscuta on Cissus
C Parasitism                  3 Sucker fish and shark
D Predation                   4 Crab and sea anemone