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Unit 7Invertebrates

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1. What percentage of the

worlds animals arevertebrates?

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A. About 1 percent

B. About 2 percent

C. About 5 percent

D. About 10 percent

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C. About 5 percent

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2. What kind of protection

have ants and beetles got?

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A. An outer shell.

B. A hard shell.C. A body covering.

D. A rigid covering orexoskeleton.

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D. A rigid covering or

exoskeleton.

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3. What has an echinoderm

got on its body?

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A. Sharp spikes

B. FurC. Feathers

D. A hard shell

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A. Sharp spikes

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4. Which invertebrate has got a soft

body with many segments?

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A. Mollusks

B. Annelids

C. Sponges

D. Arthropods

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B. Annelids

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5. How many legs have

arachnids got?

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A. Six

B. EightC. Ten

D. Twelve

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B. Eight

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6. Which arthropod can have

more than 10 legs?

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A. Myriapods

B. ArachnidsC. Crustaceans

D. Insects

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A. Myriapods

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7. Which type of arthropod

can have wings?

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A. Arachnids

B. CrustaceansC. Myriapods

D. Insects

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D. Insects

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8. How do some mosquitoes

transmit malaria?

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A. By biting people.

B. They have the diseasethemselves.

C. They have a parasiteinside them.

D. None of the above.

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C. They have a parasite

inside them.

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9. Which type of mollusk has

got long arms?

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A. Bivalves

B. Gastropods

C. Cephalopods

D. All of the above.

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C. Cephalopods

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10. What is the shape of a

snails shell?

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A. A round shell

B. A square shellC. A spiral shell

D. None of the above

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C. A spiral shell

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11. How do bivalves get

nutrients?

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A. They eat other living

things.B. They filter water to extract

nutrients.C. They create their own food

through photosynthesis.D. They eat plants.

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B. They filter water to extract

nutrients.

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12. Which mollusks produce

pearls?

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A. Mussels

B. OystersC. Slugs

D. Octopus

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B. Oysters