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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Which of the following statements about animal migration is true?

a. Piloting animals use the position of the Sun to acquire information about their direction of travel.

b. Animals migrating by compass orientation use mental maps of their position in space.

c. Navigating animals use familiar landmarks to guide their journey.

d. Navigating animals use a compass and a mental map of their position to reach a destination.

e. Most migrating birds use olfactory cues to return to the place where they hatched from eggs.

Summary Introduction

Introduction:

There are certain animals that migrate and complete a phase of their life cycle at a distant location, which provides better chances of survival due to favorable season and the availability of food resources. This is called animal migration. They use three mechanisms, namely, piloting, compass orientation and navigation to find directions.

Explanation

Justification/explanation for the correct answer:

Option (d) states that navigating animals use a compass and mental map of their position to reach their destination. The process of navigation involves the use of an imaginary compass and also a mental memory. Hence, option (d) is correct.

The explanation for the incorrect answers:

Option (a) states that piloting animals use the position of the sun to acquire information about their direction of travel. This occurs in compass orientation and not in piloting as the latter involves familiar landmarks for searching the destination. So, it is an incorrect option.

Option (b) states that animals migrating by compass orientation use mental maps of their position in space...

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