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TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A

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12th Standard English Medium Biology (Zoology) Subject Organisms and Population Creative 2 Mark Questions with Solution Part - II

Published on: 21/06/2021

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Std: 12th Standard - Biology

chapter: - Creative Questions

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Questions:

Generic 2

5 x 2 = 10

Camels are well adapted to xeric conditions, how?

Explain any two behavioural adaptations?

What is the significance of lateral-line system in fishes'?

What is Ethology?

State Bergmann's rule.

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Answers Key:

Generic 2

5 x 2 = 10

Camels are able to regulate water effectively for evaporative cooling through the skin and respiratory system and excrete highly concentrated urine, and can also withstand dehydration up to 25% of their body weight.

The two most characteristic forms of behavioral adaptations are migration and courtship. Migration allows the animals to find better resources or evade threat. Courtship is a set of behavioral patterns to find a mate to reproduce.

They function as Rheoreceptors which is helpful in echolocating objects in water.

Ethology is the scientific study of animal behaviour, under natural conditions.

Birds and mammals attain greater body size in colder regions than warmer regions (Bergmann's rule).