7th Grade Mollusks, Arthropods Echinoderms Question Preview (ID: 49654)


Chapter 10. TEACHERS: click here for quick copy question ID numbers.

Which of the following is a characteristic of echinoderms?
a) an exoskeleton
b) three body sections
c) radial symmetry
d) a segmented body

Which of these is NOT a stage in complete metamorphosis?
a) egg
b) larva
c) pupa
d) nymph

Which of the following is an advantage of using biological controls against harmful insects?
a) They are natural predators of the harmful insects.
b) They kill bees.
c) They kill all the insects that threaten a farmer’s crop.
d) They prevent all insect larvae from becoming adult insects.

The bodies of all spiders have
a) two body sections.
b) two antennae.
c) two wings.
d) six swimmerets.

How do some insects help other living things?
a) by helping them reproduce
b) by spinning fibers made of silk
c) by spreading disease
d) by fertilizing soil

Which of the following is a characteristic of millipedes?
a) They have one pair of legs on each segment.
b) They have tiny stingers to stun their prey.
c) They have two pairs of legs on each segment.
d) They inject venom into their prey.

Cephalopods move by
a) using jet propulsion.
b) moving their tentacles.
c) crawling along on a muscular foot.
d) clapping their shells together.

How does an echinoderm use its water vascular system?
a) to defend itself from predators
b) to reproduce
c) to sense when food is near
d) to capture food

Insect larvae are specialized for
a) reproducing.
b) breathing.
c) eating and growing.
d) surviving in water.

Snails and slugs belong to which group of mollusks?
a) gastropods
b) arthropods
c) bivalves
d) cephalopods

Which of these is NOT an arthropod?
a) centipede
b) grasshopper
c) snail
d) lobster

How does a grasshopper get oxygen?
a) through gills
b) through a system of tubes
c) through its skin
d) by breathing through its mouth

What types of foods do insects eat? a. b. c. d.
a) only plants
b) only animals
c) only paper and books
d) anything living or once-living

An echinoderm with long slender arms and flexible joints is a
a) sea star.
b) brittle star.
c) sea urchin.
d) sea cucumber.

An organism that eats wastes and dead organisms is a a. b. c. d.
a) consumer.
b) decomposer.
c) pollinator.
d) producer.

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