The Life Cycle of Oysters

What is a larva in the life cycle of an oyster?

• An adult oyster with a shell

• A baby oyster without a shell

• A fish that eats oysters

• A type of seaweed

How long does an oyster larva float in the water before finding a place to stick?

• One day

• Two or three weeks

• One year

• One month

What does a larva need to survive and grow into an adult oyster?

• Dirty water and sand

• Clean water and a safe place

• Sunlight and air

• Rocks and grass

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What happens to many oyster larvae before they become adults?

• They grow into fish

• They do not survive

• They fly away

• They turn into plants

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After finding a hard place to stick to, what does the oyster larva do next?

• It starts to grow a shell

• It swims away

• It eats other oysters

• It turns into a crab

Why do you think clean water is important for oyster larvae to survive?

• Because it helps them find food and stay healthy

• Because it makes them swim faster

• Because it helps them fly

• Because it makes their shells colorful

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If an oyster larva cannot find a hard place to stick to, what might happen?

• It will grow a shell in the water

• It may not survive and become an adult

• It will turn into a fish

• It will float forever

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What could happen to oysters if the water they live in becomes dirty?

• More larvae will survive

• Fewer larvae will survive

• Oysters will grow faster

• Oysters will turn blue

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Imagine you are an oyster larva. What would you look for to help you grow into an adult oyster?

• A soft, sandy spot

• A hard place to stick to and clean water

• A place with lots of fish

• A sunny spot on the beach

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Suppose many oyster larvae are dying before becoming adults. What could people do to help more larvae survive?

• Make the water cleaner and provide safe places for larvae to stick

• Catch more oysters

• Add more sand to the water

• Feed the larvae candy

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