Cumulative Exam — Cumulative exam Answers

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Edward drew a Venn diagram to compare sponges and cnidarians.

Question illustration
A
Can swim freely
B
Are invertebrates
C
May have spicules
D
Reproduce asexually only
44

Which structure of the excretory system mainly functions in filtration?

A
ureter
B
kidney
C
urethra
D
bladder
45

A scientist is observing an organism under the microscope. The organism was found in salt water, is multicellular, and its cells do not have nuclei.

A
It is a protist because it is microscopic.
B
It is not a protist because its cells do not have nuclei.
C
It is not a protist because it is multicellular.
D
It is a protist because it is found in salt water.
46

Which is the best way to describe the biodiversity of an area?

A
A grassland has organisms that live on hundreds of acres of land.
B
A desert has 10 species of animals that can survive dry conditions.
C
A rainforest has fertile soil that supports many kinds of plants.
D
A pond has 12 species of organisms, including 300 animals and 40 plants.
48

Which shows the levels of organization within an ecosystem from largest to smallest?

A
organism, population, community, ecosystem
B
organism, community, population, ecosystem
C
ecosystem, community, population, organism
D
ecosystem, population, community, organism
50

A scientist is studying a protist and records the following information about it:Cell has a nucleusHas a flagellaProduces oxygenFound in salt water

A
The protist is an animal-like flagellate because it has a flagellum.
B
The protist is a plant-like dinoflagellate because it produces oxygen.
C
The protist is a plant-like dinoflagellate because it was found in salt water.
D
The protist is an animal-like flagellate because it has a nucleus.

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