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Bellringer. 5 minutes to finish your study guide We will go over the answers together in class. Ch 25-29 & 33 Animals Study Guide Answers!!!. Vocab. Amniotic egg: reproductive organ surrounded by amniotic fluid and membranes for protection

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bellringer
Bellringer
  • 5 minutes to finish your study guide
  • We will go over the answers together in class.
vocab
Vocab
  • Amniotic egg: reproductive organ surrounded by amniotic fluid and membranes for protection
  • Cephalization: concentration of sensory/brain structures at the front of the body
  • Dioecious: havign two distinct genders
  • Endotherm: warm-blooded; stable internal temp
  • Ectotherm: cold-blooded; controlled by environment
  • Hermaphrodite: having both male and female reproductive organs
vocab cont d
Vocab Cont’d
  • Mandibles: mouth parts used for holding, chewing, biting, sucking
  • Metamorphosis: changes in shape and body during development
  • Molting: shedding exoskeleton and forming a new one
  • Nematocyst: stinging cells
  • Sessile: fixed to one place
  • Spicules: tiny hard particles that make up the skeleton
slide5

List the 6 Characteristics that all animals have.

-Multicellular, Eukaryotic, Heterotrophic, Have to digest food, Lack cell walls, Ability to move

2. Draw a four legged animal—label the four anatomical directions—anterior/ventral, posterior/dorsal, superior and inferior.

  • Dorsal/Posterior—towards the back
  • Ventral/Anterior—towards the front
  • Superior—towards the head
  • Inferior—towards the bottom
slide6

3. Explain the three types of symmetry and name one animal with each.

Radial- body can be cut through any plane and be exactly alike (Ex: Starfish)

Bilateral – body can be cut in two with both halves being exactly alike. (Ex: Humans)

Asymmetry--body with an irregular shape (Ex- Sponges)

4. Explain the 2 types of digestive systems (complete vs. incomplete) and name one animal with each

Incomplete digestive system: one opening; food and waste enter and exit from the same opening

Complete digestive system: two openings; food enters the mouth and wastes exit the anus

slide7

5. Explain the 2 types of circulatory systems (closed vs. open).

Open circulation—fluid pumped from vessels into body cavity, then returned to vessels (Ex. arthropods and most mollusks)

Closed circulation-- fluid stays in vessels (Ex. some mollusks, higher invertebrates, and all vertebrates)

6. Explain the 2 types of fertilization—number of eggs for each??? (internal vs. external)

External fertilization- egg and sperm are released into the water; large numbers of eggs

Internal fertilization- eggs are fertilized by sperm inside the mother’s body; fewer numbers of eggs

slide8

7. Which vertebrates are ectothermic? Which are endothermic?

  • Ectothermic—Chondrichthyes, Osteichthyes, Amphibia, Reptilia
  • Endothermic—Aves, Mammals

8. What class of invertebrates will sting you?

--Cnidarians

9. How many legs do insects have? How many legs do arachnids have?

--Insects: 6 --Arachnids: 8

slide9

10. What does the name “Echinodermata” mean? “Chondrichthyes”? “Osteichthyes”? “Amphibian”? Name one animal in each group.

  • Echinodermata—”spiny skinned”—starfish
  • Chondrichthyes—”cartilage fish”—shark
  • Osteichthyes—”Bone fish”—catfish
  • Amphibia—”double life”—frog

11. List the 5 Characteristics that all Chordates have.

  • *Have a dorsal notochord, that becomes the spine.
  • An endoskeleton made of cartilage or bone.
  • Pharyngeal slits or gill pouches during development.
  • A dorsal nerve cord.
  • Post-anal tail
slide10

12. List the 6 classes of Vertebrates and two animals that belong to each. Then list two traits about each class (appearance mostly)

  • Chondrichthyes: (sharks/rays)--have fins and scales, breathe with gills.
  • Osteichthyes: (salmon/perch)--have fins and scales, breathe with gills.
  • Amphibia: (frogs/salamanders)--smooth, moist skin, no claws or scales

- Reptilia: (snakes/lizards)--body covered w/scales or plates, have lungs/scales & plates/claws

  • Aves: (robin/ostrich)-- have wings and feathers, parents incubate eggs
  • Mammals: (whales/humans)-- have hair & mammary glands, have a diaphragm
slide11

13. What is unique about a monotreme mammal? A marsupial mammal? Name an animal of each group.

  • Monoteme—only mammals that lay eggs (platypus)
  • Marsupial—carry their young in a pouch (kangeroo)

14. What makes an animal a vertebrate? An invertebrate?

Vertebrate = backbone

Invertebrate = no backbone

slide12

15. Copy the following prompts. Then name the vertebrate class that was the first in the evolutionary sequence to have each trait.

a. Three chambered heart = Amphibia

b. Internal fertilization = Reptilia

c. Use of an amniotic egg = Reptilia

d. Warm-blooded = Aves

e. Four chambered heart = Aves

f. Birth to live young = Mammals

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