Q1.
Which of the following is not an attribute of a population?
Q2.
Carnivorous animals lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as
Q3.
Between which among the following, the relationship is not an example of commensalism?
Q5.
Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
Q6.
In a growing population of a country,
Q7.
Which one of the following population interactions is widely used in medical science for the production of antibiotics?
Q8.
Asymptote in a logistic growth curve is obtained when
Q9.
Mycorrhizae are the example of
Q10.
Which of the following is correct for r-selected species?
Q11.
If + sign is assigned to beneficial interaction, - sign to detrimental and O sign to neutral interaction, then the population interaction represented by + - refers to
Q12.
The principle of competitive exclusion was stated by
Q13.
When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1-N/K)
Q14.
Gauses principle of competitive exclusion states that
Q15.
In which of the following interactions both partners are adversely affected?
Q16.
According to Darwin, the organic evolution is due to
Q17.
A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is
Q18.
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is
Q19.
The age pyramid with broad base indicates
Q20.
Cuscuta is an example of
Q21.
Which one of the following is categorised as a parasite in true sense?
Q22.
The logistic population growth is expressed by the equation
Q23.
Which one of the following is most appropriately defined?
Q24.
Geometric representation of age structure is a characteristic of
Q25.
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?
Q26.
A high density of elephant population in an area can result in
Q27.
The maximum growth rate occurs in
Q28.
Mycorrhiza is an example of
Q29.
Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called
Q30.
Two different species cannot live for long duration in the same niche or habitat. This law is
Q31.
In a population, unrestricted reproductive capacity is called as
Q32.
Association of animals when both partners are benefitted
Q33.
The relation between algae and fungi in a lichen is
Q34.
Competition for light, nutrients and space is most severe between