Name: _____________________________________________ Date: _____________ Period: _______
Animals District Exam Review
ANSWER KEY
1. What are the major characteristics that all animals share?
Multicellular, heterotrophic, reproduce sexually, develop from embryos in stages, have
specialized parts, move
2. What phylum of animals has the largest number of species?
Arthropods
3. Are they vertebrates or invertebrates (question 2)?
Invertebrates
4. What is the difference between vertebrates and invertebrates? What is similar between them?
Both are animals; vertebrates have a backbone and skull, invertebrates do not
5. Compare and contrast innate and learned behaviors. Give some examples of each.
Innate behaviors are those things an animal has or can do when it is born. Learned are things
animals can do after being taught or modifying something that was innate. Being able to
speak is innate, specific languages are learned
6. Compare and contrast estivation and hibernation.
Hibernation is inactivity during cold periods; Estivation is inactivity during warm periods
7. Describe the 3 types of symmetry.
Asymmetry: no symmetry or no regular arrangement
Radial symmetry: arranged around 1 point; can be equally divided many ways; like a pizza
Bilateral symmetry: arranged around a central line; can be equally divided down that center
line only; like a human
8. Fill in the chart below with the meaning of the words found in the left column.
Word
Meaning
Cnidarian
Nettles; stinging cells
Mollusca
Soft bodied
Bivalve
2-shelled; 2-hinged
Cephalopod
Head foot
Gastropod
Stomach foot
Annelid
Segmented worm
Arthropod
Jointed appendages
Echinoderm
Spiny skinned
Amphibian
Double Life
9. How do cnidarians protect themselves?
They use their tentacles with stinging cells (nematocysts and cnidocytes)
10. Describe the segments of the insect body.
Head, thorax, abdomen
11. Describe the functions of the following structures:
Structure
Function
Gills
Used for getting oxygen from water
Fins
For steering and turning; swimming
Swim
Bladder
Lateral Line
To float, raise and lower in the water
Amniotic
Egg
Notochord
Egg that provides food and protection for the young; hard shell prevents drying
out
Protects the nerve cord; found in all vertebrates
Row of cells along the fish body that sense
12. Describe the process of metamorphosis-in detail.
Amphibians lose their gills and tail and develop legs and lungs
13. Create a Venn diagram that compares and contrasts frogs and toads.
Thin, moist skin
Live in drier
places
Stay out of
water longer
Metamorphosis
Thick, dry skin
Lay eggs
FROGS
Amphibian
TOADS
Live in wet
places
Stay in water
more
14. Create a Venn diagram that compares and contrasts birds and reptiles.
Feathers
Thick, dry skin
Endothermic
Light bones
4-chambers
Vertebrates
REPTILES
Amniotic Egg
BIRDS
Ectothermic
Heavy bones
3-chambers
15. Describe the major characteristics of the group of birds to which owls belong.
Owls are birds of prey. They have good eyesight and hearing and have sharp claws.
16. Explain the things birds need to allow them to fly.
Birds need feathers, strong flight muscles, hollow bones, and a great deal of energy (high
metabolism)
17. What is the difference between being endothermic and ectothermic?
Endothermic animals regulate their body temperature internally. Ectothermic animals have a
body temperature that is influenced by the temperature of the environment.
18. Classify each vertebrate group according to whether the animals are endo or ectothermic.
ECTOTHERMIC: fish, amphibians, reptiles
ENDOTHERMIC: Birds, Mammals
19. Describe each of the 3 types of mammals.
Monotremes: lay eggs
Marsupials: pouched
Placental: live young; embryo develops inside mother, attaches with placenta