#157 Chapter 9 Introduction to Animals Chapter Study Guide

Mollusks such as snails have a thin layer of tissue to protect its internal organs. What is it called?

• mammal

• a mantle

• parasite

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MS-LS1-3

All animals have this trait in common. What is it?

• cell wall

• fur or hair

• nerve cells

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MS-LS1-3

Scientists use a system called _____ to organize living things.

• behavior.

• taxonomy.

• adaptation.

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MS-LS1-3

An adaptation is an inherited trait that increases an organism's chance of surviving and reproducing in its environment. What is an essential characteristic of an adaptation?

• It is helpful.

• It is structural.

• It is functional.

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MS-LS1-3

What is an invertebrate?

• an animal that eats other animals

• an animal that has a backbone

• an animal that does not have a backbone

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MS-LS1-3

This group of invertebrates contains the most animals. What is it?

• cnidarians

• arthropods

• echinoderms

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MS-LS1-3

What group of vetebrate chordates do humans belong?

• reptiles

• mammals

• amphibians

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MS-LS1-3

During _____ the body form of an organism changes as it grows from an egg to an adult.

• adaptation

• gill

• metamorphosis

• parasite

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MS-LS1-3

During _____ the body form of an organism changes as it grows from an egg to an adult.

• adaptation

• gill

• metamorphosis

• parasite

Tags

MS-LS1-3

An inherited trait that increases a species' chances of survival is a(n) _____.

• adaptation

• gill

• metamorphosis

• parasite

Tags

MS-LS1-3