A student looks at a slice of tissue on an unlabeled microscope slide. The student concludes the tissue is not from an animal because the cells in the tissue have what?
answer
Cell walls.
question
Look at Figure 25-1 above, which letter represents the hollow nerve cord?
answer
B.
question
Which of the following correctly describes the major types of animals?
answer
All chordates share a common ancestor, but there is no common ancestor of all invertebrates.
question
Homeostasis is a...
answer
Stable internal environment.
question
When an animal's environment changes, sexual reproduction improves a species' ability to...
A student looks at a slice of tissue on an unlabeled microscope slide. The student concludes the tissue is not from an animal because the cells in the tissue have what?
answer
Cell walls.
question
Look at Figure 25-1 above, which letter represents the hollow nerve cord?
answer
B.
question
Which of the following correctly describes the major types of animals?
answer
All chordates share a common ancestor, but there is no common ancestor of all invertebrates.
question
Homeostasis is a...
answer
Stable internal environment.
question
When an animal's environment changes, sexual reproduction improves a species' ability to...
answer
Adapt to new living conditions.
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