Unit One: Animalia

Question 1

What are animals?

Answer 1

• Eukaryotes
• Multicellular
• Heterotrophs
• Lack cell wall
  -Most are motile

Question 2

What are animals organized based on?

Answer 2

• Body Plans
• Levels of organization(simple => complex)
• Body symmetry
• Embryological development
• Segmentation
• Limbs

Question 3

What is the simplest level of organization?

Answer 3

• Cells are the simplest level
• Cells become specialized to form tissue
• Groups of tissue can form organs which can work together to form organ systems

Question 4

What are the three types of body symmetry?

Answer 4

1. Bilateral symmetry. i.e. bird(most common)
2. Radial symetry. i.e. starfish(lack head and back)
3. Asymmetrical. i.e. sponges

Question 5

What do all animals have in common in term of embryological development?

Answer 5

All begin as a zygote(fertalized egg)

Question 6

What are segments?

Answer 6

• Repeating part of an animals body
• can have many similar or repeating sections
• i.e. head, thorax and abdomen of an insect

Question 7

What are limbs used for?

Answer 7

• Movement
• Defence
• Gathering sensory info

Question 8

What are animals with a backbone called?

Answer 8

Vertebrates(5% of all animalia)

Question 9

What are animals without a backbone called?

Answer 9

Invertebrates(95% of animalia)

Question 10

What is cephalization?

Answer 10

Development of a head with sensory organs.