Science Life Cycle Review

The diagrams show the life cycles of two plants. How are the life cycles of these two plants similar? In their life cycles, both plants –

• develop the same kind of flowers

• have exactly four stages in their life cycles

• have the same number of leaves as adults

• begin life as seeds and grow larger

These diagrams show the life cycles of a cockroach and a tenebrio. Which statement correctly compares these two life cycles?

• both animals go through four stages of development

• neither the young nymph nor the larva have wings

• neither organism's body changes as it develops

• when both emerge from eggs, they look like adults

The main function of the larva stage in animals like the butterfly is to -

• protect the eggs from predators

• change and develop new body parts

• store energy by constantly eating

• reproduce and have offspring

The life cycle of the tomato plant is illustrated here. Which stage in the diagram is the adult plant?

• A

• B

• C

• D

All life cycles, whether they are plant or animal life cycles include -

• growth and change

• spreading of seeds

• larva and pupa stages

• giving milk to young

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Plants have flowers so they can reproduce. Therefore, when a plant has flowers, we know that the plant -

• does not need insects to feed on it

• live in a warm, moist climate

• has readed the adult stage

• is not able to produce seeds

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How is the life cycle of a butterfly similar to the life cycle of a frog? Both life cycles –

• include a tadpole stage

• produce adults with wings

• take place in the water

• begin with eggs

One way in which a plant life cycle is like an animal life cycle is that both plants and animals –

• use seeds to reproduce

• live for hundreds of years

• lay eggs that hatch

• grow larger over time

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The life cycle of a darkling beetle is shown here. Which stage represents the change from larva to adult?

• A

• B

• C

• D

Adult plants reproduce by forming seeds. These seeds grow to become new plants. Which stage in a beetle’s life cycle is most similar to a plant seed?

• Egg

• Larva

• Pupa

• Adult