Textbook Question
For each of the following, explain how structure relates to function:
absorptive sections of the digestive tract;
capillaries;
beaks of Galápagos finches;
fish gills.
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38. Animal Form and Function
Animal Tissues
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The teeth of which animal continue to grow throughout its life?
A
Cat
B
Dog
C
Horse
D
Rabbit
Verified step by step guidance1
Understand the biological concept: Some animals have teeth that grow continuously throughout their lives to compensate for wear caused by their diet or behavior. This is known as 'indeterminate growth' of teeth.
Identify the type of teeth involved: In animals like rabbits, their incisors grow continuously. This adaptation helps them maintain functional teeth despite constant gnawing on hard materials like wood or fibrous plants.
Compare the options: Cats, dogs, and horses do not have teeth that grow continuously throughout their lives. Their teeth grow to a certain size and stop, unlike rabbits.
Relate the adaptation to the animal's diet: Rabbits are herbivores that consume tough plant material, which wears down their teeth. Continuous growth ensures their teeth remain effective for chewing.
Conclude the answer: Based on the biological adaptation of continuously growing teeth, the correct answer is 'Rabbit'.
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