_________________ is a group of organisms of the same species that inhabit a geographical area at a given time.

The birth rate of a population in a given time is called ___________________.

Mortality in a population indicates the ___________________.

The percentage ratio of natality - mortality in a unit population in a unit time is called _________________.

According to 2001 estimates the number of females per males in our country is _________________.

A population with equal birth and death rate is called a___________________ population.

In an expanding population, the age pyramid is __________ shaped .

Parasites which cannot survive without the host is called __________________ parasites.

Cuscuta is a _______________ in plants.

As a defense mechanism against plant predators acacia has _______.

If the predator and prey belong to the same species the interaction is called  ______________.

An interaction where both organisms are benefitted is called  __________________.

The interaction between Clownfish and sea anemones is an example of _________________.

The number of individuals of the same species that enter the habitat from outside during the period under consideration is called _____________________.

The scientific study of human population is called _______________.

Which of the following is an example of ectoparasite?

Which of the following is a non pathogenic parasite?

A process in which the fitness of one species is significantly lowered in the presence of another species is called ________________.

The cuckoo and the crow is an example of ____________________. 

Small fish get stuck near the bottom of a shark and derive their nutrition from it. This kind of association is called ____________________.

A high density of elephant population in an area can result in ___________________________.

Lichens are an example of _________________________.

The urn-shaped age pyramid shows a ________________________ population.

Emigration ______________________ the density of the population.

A graph showing the exponential growth of the population is ___ shaped.

The limit of habitat to subsist a species is called _____________________.

The logistic growth curve of a population has a _____ shape.

Which of the following is a predatory plant?

Which of the following plants harbour ants as a defense mechanism against predators?

Biological control is based on which of the following interactions?

Which of the following is not a parasitic adaptation?

Which of the following is an example of interspecific competition?

Abingdon tortoises on Galapagos island became extinct after goats were introduced on the island. This is an example of _______________________________.

Interaction between the ruminants and the cellulose-digesting bacteria is an example of ____________________.

Which of the following plants employs sexual deceit to get pollinated by a species of bee?

Which of the following animal is a scavenger?

The chemical substance which is extracted from opium plant is naturally produced in plant for ______________________.

Which of the following organism is highly distasteful to its predator?

In commensalism the species that derives benefit is called the ____________.

An association between organisms of different species in which both are benefitted but can live without each other is called ____________________.

Which of the following can cause an increase in the population density? 

An expanding population has a _________________________ shaped age pyramid.

Which of the following interaction can clean the environment?

An interaction in which one is harmed and the other is unaffected is called __________________________.

A high-density of tiger population in an area can result in __________________.

An interaction between the fungus and roots of higher plants is called _______________________.

Which of the following statements is not true in relation to predators?

An interaction where both species are benefitted, but obligatory is called _________________________. 

Cleome has_________________ as a defense mechanism against predators. 

Which of the following is an endoparasite which is found in body fluids?