AnswersTPS EdX BiologyOverview of Animals

Overview of Animals — Quiz Answers

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Which two characteristics describe all animals?

A
multicellular and symmetrical
B
heterotrophic and unicellular
C
heterotrophic and multicellular
D
multicellular and asymmetrical
3

Which function allows animals to find mates?

A
movement
B
homeostasis
C
feeding
D
reproduction
4

A scientist is studying an organism and has classified it as an animal. Which statement must be true about the organism?

A
It has a backbone.
B
It displays radial symmetry.
C
It is multicellular.
D
It contains cells without nuclei.
5

A scientist discovers a new organism and is trying to classify it. Which observations would most likely indicate that the organism is an animal?

A
It makes food from sunlight and is eukaryotic.
B
It is heterotrophic and unicellular.
C
It is multicellular and can move itself from place to place.
D
It is prokaryotic and can move itself from place to place.
7

Which three steps describe how an animal obtains and uses energy for growth?

A
First, food is built into larger molecules. Then, the animal eats another organism. Next, the animal’s cells use molecules to make new cells.
B
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal’s cells use molecules to make new cells.
C
First, food is broken down into smaller molecules. Then, the animal eats another organism. Next, the animal’s cells use molecules to make new cells.
D
First, an animal eats another organism. Then, food is built into larger molecules. Next, the animal’s cells use molecules to make new cells.
9

What do all vertebrates and invertebrates have in common?

A
They are covered by an outer skeleton.
B
They are bilaterally symmetrical.
C
They are prokaryotic.
D
They are multicellular.
10

Which statement accurately describes reproduction in animals?

A
Animals only reproduce asexually.
B
All animals can reproduce asexually, and some can reproduce sexually.
C
All animals can reproduce sexually, and some can reproduce asexually.
D
Animals only reproduce sexually.

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