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17
MCQ (Single Correct Answer)

Amensalism is an association between two species where

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.

18
MCQ (Single Correct Answer)

Lichens are the associations of

A

bacteria and fungus

B

algae and bacterium

C

fungus and algae

D

fungus and virus

19
MCQ (Single Correct Answer)

Which of the following is a partial root parasite?

A

Sandal wood

B

Mistletoe

C

Orobanche

D

Ganoderma

20
MCQ (Single Correct Answer)

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

A

Banana plant

B

Mango

C

Tomato

D

Eucalyptus

21

Species that can tolerate narrow range of temperature are called.........

Explanation

Stenothermal Organisms

Temperature, a major abiotic factor affects the metabolism, activity and so many other physiological functions of the organism.

On the basis of temperature tolerance, organism can be classified as eurythermal and stenothermal.

(i) Eurythermal organisms can tolerate and thrive in a wide range of temperatures.

(ii) Stenothermal organisms tolerate only a narrow range of temperatures.