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
-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.
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
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
8. What class of invertebrates will sting you?
9. How many legs do insects have? How many legs do arachnids have?
--Insects: 6 --Arachnids: 8
10. What does the name “Echinodermata” mean? “Chondrichthyes”? “Osteichthyes”? “Amphibian”? Name one animal in each group.
11. List the 5 Characteristics that all Chordates have.
12. List the 6 classes of Vertebrates and two animals that belong to each. Then list two traits about each class (appearance mostly)
- Reptilia: (snakes/lizards)--body covered w/scales or plates, have lungs/scales & plates/claws
13. What is unique about a monotreme mammal? A marsupial mammal? Name an animal of each group.
14. What makes an animal a vertebrate? An invertebrate?
Vertebrate = backbone
Invertebrate = no backbone
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