Animal Kingdom

Question 1

Importance of Animals:

Answer 1

• the more we learn about the biology of animals, the more we learn about ourselves (ex: origin of human diseases, how to keep ourselves healthy etc)
• food source - directly eat animals or rely on them for -pollination of plants
• maintain healthy ecosystems
• friends - domesticated pets
• Throughout history and culture animals have been revered as symbols of power, beauty, freedom, peace etc.

Question 2

Protostome

Answer 2

an animal with bilateral symmetry; during embryonic development, the mouth forms before the anus.(in protostomes the blastopore becomes the mouth).

Question 3

Deuterostome

Answer 3

an animal with bilateral symmetry; during embryonic development, the anus forms before the mouth. (in deuterostomes, the blastopore becomes the anus.)

Question 4

Vertebrate

Answer 4

an animal with a backbone or notochord.

Question 5

Notochord

Answer 5

a flexible rod found in some chordates; in most modern chordates it is replaced by vertebrae during embryonic development

Question 6

Invertebrate

Answer 6

an animal that does not have a backbone; the great majority of animal species are invertebrates.

Question 7

Blastopore

Answer 7

the opening of the central cavity of an embryo in the early stage of development

Question 8

Coelom

Answer 8

a body cavity present in some animals; contains the animal’s internal organs.

Question 9

Key Characteristics:

Answer 9

• eukaryotic and multicellular
• all are heterotrophic
• use oxygen for aerobic respiration
• No cell wall
• their cell membranes are in direct contact with each other
• mostly reproduce sexually
• can be terrestrial or aquatic