Chapter Resources

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Chapter Resources
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resource.
life.msscience.com
Image Bank
Foldables
Video Clips and Animations
Chapter Summary
Chapter Review Questions
Standardized Test Practice
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life.msscience.com
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Image Bank
Mollusk Body
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Snail
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Snail
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Oyster
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Octopus
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Squid
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Pearls
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Earthworm
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Earthworm Circulatory System
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Marine Worm
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Leech
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Mollusk Larvae
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Insect
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Beetle
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Insect
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Fly
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Dragon Fly
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Nymph
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Feeding Adaptations
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Mosquito Mouth
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Spider
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Scorpion
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Spider Lungs
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Shrimp
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Trilobite
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Starfish
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Water-vascular System
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Water-vascular System
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Sea Urchin
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Sea Cucumber
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Metamorphosis
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Foldables
Invertebrates
Make the following Foldable to help you organize
the main characteristics of the four groups of
complex invertebrates.
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Foldables
Draw a mark at the midpoint of a sheet of paper
along the side edge. Then fold the top and
bottom edges in to touch the midpoint.
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Foldables
Fold in half from side to side.
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Foldables
Turn the paper vertically. Open and cut along
the inside fold lines to form four tabs.
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Foldables
Label the tabs. Mollusks, Worms, Arthropods, and
Echinoderms.
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Foldables
Classify
As you read the chapter, list the characteristics
of the four groups of invertebrates under the
appropriate tab.
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Video Clips
Click box to view movie.
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Video Clips
Click image to view movie.
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Reviewing Main Ideas
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Mollusks

• Mollusks are soft-bodied invertebrates that
  usually are covered by a hard shell. They move
  using a muscular foot.

• Mollusks with one shell are gastropods. Bivalves
  have two shells. Cephalopods have an internal
  shell and a foot that is divided into tentacles.

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Reviewing Main Ideas
2
Segmented Worms

• Segmented worms have tube-shaped bodies divided
  into sections, a body cavity that holds the
  internal organs, and bristlelike structures
  called setae to help them move.

• An earthworms digestive system has a mouth,
  crop, gizzard, intestine, and anus. Polychaetes
  are marine worms. Leeches are parasites that
  attach to animals and feed on their blood.

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Reviewing Main Ideas
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Arthropods

• More than a million species of arthropods exist,
  which is more than any other group of animals.
  Most arthropods are insects.

• Arthropods are grouped by number of body segments
  and appendages. Exoskeletons cover, protect, and
  support arthropod bodies.

• Young arthropods develop either by complete
  metamorphosis or incomplete metamorphosis.

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Reviewing Main Ideas
4
Echinoderms

• Echinoderms have a hard, spiny exoskeleton
  covered by a thin epidermis.

• Most echinoderms have a water-vascular system
  that enables them to move, exchange carbon
  dioxide and oxygen, capture food, and give off
  wastes.

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Chapter Review
Question 1
Which corresponds with the insects body part
that contains the reproductive structures?
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Chapter Review
Answer
The abdomen is where the reproductive structures
are found. Females lay thousand of eggs, but only
a fraction of the eggs develop into adults.
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Chapter Review
Question 2
What type of food does this insect most likely
eat?
A. blood B. flowers C. grass D. nectar
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Chapter Review
Answer
The answer is D. Butterflies and other nectar
eaters have a long siphon that enables them to
drink nectar from flowers.
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Chapter Review
Question 3
Which has an open circulatory system?
A. cuttlefish B. earthworms C. humans D. slugs
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Chapter Review
Answer
The answer is D. In an open circulatory system,
the heart moves blood out into open spaces around
the body organs. The blood, which contains
nutrients and oxygen, completely surrounds and
nourishes the body organs.
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Chapter Review
Question 4
Which letter corresponds with the larval stage?
A. E B. F C. G D. H
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Chapter Review
Answer
The answer is B. Only the larval forms molt
during complete metamorphosis.
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Chapter Review
Question 5
What do spiders and sea stars have in common?
A. ability to regenerate lost limbs B. both have
brains C. use enzymes to digest food D.
water-vascular system
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Chapter Review
Answer
The answer is C. Spiders and sea stars release
enzymes onto or into their prey which help them
digest it.
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Standardized Test Practice
Question 1
_______ are openings on the abdomen and thorax of
an insect through which air enters and waste
gases leave.
A. crops B. gills C. radula D. spiracles
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Standardized Test Practice
Answer
The answer is D. Insect blood does not carry
oxygen because it does not have hemoglobin.
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Standardized Test Practice
Question 2
Which letter corresponds with the pupa stage?
A. E B. F C. G D. H
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Standardized Test Practice
Answer
The answer is C. Cocoon is the common name for
the pupa stage of a moth or butterfly.
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Standardized Test Practice
Question 3
Which mouthpart is best adapted for piercing skin
and sucking blood?
A. A B. B C. C D. None of these
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Standardized Test Practice
Answer
The answer is C. Mosquitoes and flies have
mouths that are adapted for piercing skin and
sucking blood.
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Standardized Test Practice
Question 4
Which letter corresponds with the body part
responsible for grinding up soil and bits of
organic matter?
A. A B. B C. C D. D
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Standardized Test Practice
Answer
The answer is D. The gizzard is a muscular
structure behind the crop which grinds soil and
organic matter.
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Standardized Test Practice
Question 5
This is an example of a _______.
A. bivalve B. cephalopod C. gastropod D.
polychaete
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Standardized Test Practice
Answer
The answer is A. Bivalve mollusks have a hinged,
two-part shell joined by strong muscles.
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End of Chapter Resources File