An association between two individuals or populations where both are benefitted and where neither can survive without the other is

1

(a)

commensalism

(b)

amensalism

(c)

protocooperation

(d)

mutualism

What would be the per cent growth or birth rate pe individual per hour for the same population mentioned in the question (Question 10 at Page 95)?

1

(a)

100

(b)

200

(c)

50

(d)

150

A population has more young individuals compared to the older individuals. What would be the status of the population after some years?

1

(a)

It will decline

(b)

It will stabilise

(c)

It will increase

(d)

It will first decline and then stabilise

What parameters are used for tiger census in our country's national parks sanctuaries?

1

(a)

Pug marks only

(b)

Pug marks and faecal pellets

(c)

Faecal pellets only

(d)

Actual head counts

Which of the following would necessarily decrease the density of a population in a given habitat?

1

(a)

Natality > mortality

(b)

Immigration > emigration

(c)

Mortality and emigration

(d)

Natality and immigration

A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations?

1

(a)

128

(b)

24

(c)

64

(d)

32

Amensalism is an association between two species where:

1

(a)

one species is harmed and other is benefitted

(b)

one species is harmed and other is unaffected

(c)

one species is benefitted and other is unaffected

(d)

both the species are harmed

Lichens are the associations of :

1

(a)

bacteria and fungus

(b)

algae and bacterium

(c)

fungus and algae

(d)

fungus and virus

Which of the following is a partial root parasite?

1

(a)

Sandal wood

(b)

Mistletoe

(c)

Orobanche

(d)

Ganoderma

Which one of the following organisms reproduces sexually only once in its life time?

1

(a)

Banana plant

(b)

Mango

(c)

Tomato

(d)

Eucalyptus