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Questions and Answers
All chordates have a backbone.
All chordates have a backbone.
False
What is characteristic of an Aves (bird)?
What is characteristic of an Aves (bird)?
Having a waterproof skin with feathers
Chordates have a ______________ running down the body.
Chordates have a ______________ running down the body.
notochord
Which of the following is NOT a characteristic of mammals?
Which of the following is NOT a characteristic of mammals?
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What is the kingdom to which bacteria belong?
What is the kingdom to which bacteria belong?
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Match the following kingdoms with their examples:
Match the following kingdoms with their examples:
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All birds are homeothermic.
All birds are homeothermic.
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Forelimbs of Aves are modified to form _______________.
Forelimbs of Aves are modified to form _______________.
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What is characteristic of a mammal's teeth?
What is characteristic of a mammal's teeth?
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Which of the following is a characteristic of chordates?
Which of the following is a characteristic of chordates?
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Study Notes
Arthropods
- Have a waterproof exoskeleton made mainly of chitin
- Have a segmented body
- Have several pairs of jointed legs
Pisces (Fish)
- Have a waterproof skin covered with scales
- Have gills for breathing
- Have fins for swimming
- Examples: barracuda, flying fish, shark
Paraphrasing Molluscs
- Have a soft, moist, unsegmented body
- Have a muscular foot
- Many have shells
- Examples: slug, snail, octopus
Echinoderms
- Have a body based on a radial pattern of five parts
- Body wall contains calcium carbonate plates, often with projecting spines
- Have tube feet with suction pads for movement
- Examples: starfish, sand dollar, sea urchin
Amphibians
- Have a soft, moist, non-waterproof skin without scales
- Eggs are laid in water, larvae live in water, adults live on land
- Larvae have gills, adults have lungs
- Examples: frog, toad, newt
Reptiles
- Have a dry, waterproof skin with scales
- Lay eggs with a rubbery shell on land
- Examples: barrel sponge, vase sponge
Arachnids
- Have no antennae
- Have four pairs of legs
- Body is divided into cephalothorax and abdomen
- Examples: spider, tick, scorpion
Cnidaria
- Have a bag- or umbrella-shaped body
- Gut has only one opening, the mouth
- Have a ring of tentacles around the mouth
- Examples: sea anemone, coral, jellyfish
Platyhelminthes (Flatworms)
- Have a long, flat, unsegmented body
- Examples: tapeworm, liver fluke
Nematodes (Roundworms)
- Have an elongated, round, unsegmented body with pointed ends
- Examples: hookworm, threadworm
Annelids (Segmented Worms)
- Have an elongated body divided into segments
- Examples: earthworm
Chordates
- Have a notochord (rod) running down the body
- Most have a backbone
- Have a dorsal nerve cord with the anterior end usually enlarged forming the brain
- Most have an internal skeleton of bone and cartilage
Aves (Birds)
- Have a waterproof skin with feathers
- Have a beak and no teeth
- Forelimbs are modified to form wings
- Lay eggs with a hard shell
- Are homeothermic (warm-blooded)
- Examples: sparrow, cattle egret, hawk
Mammals
- Have a waterproof skin with hair and sweat glands
- Have different types of teeth
- Young feed on milk from their mother
- Are homeothermic
- Examples: mouse, whale, human
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Description
This quiz is about the characteristics of invertebrates such as arthropods, molluscs, and others. Learn about their exoskeletons, bodies, legs, and breathing systems.
