level 1

Question 1

Name the features that are used as the basis of animal classification?

Answer 1

• the arrangement of cell
• body symmetry
• nature of coelom
• pattern of digestive
• circulatory/reproductive system

Question 2

In sponges, the cell are arranged as _____ , they exhibit ____________ of organization.

Answer 2

loose cell, cellular level

Question 3

what is the organ system, tissue level, and organ level?

Answer 3

Organ system, organ have associated to form functional systems, each system concerned with a specific physiological function

Tissue level, Cells performing the same function are arranged into tissues, hence it’s called tissue level of organization.

Organ level, a still higher level of organization seen phyla, etc. where tissue is grouped together to form organs, each specialized for a particular function.

Question 4

name some animals that have an organ system?

Answer 4

Annelids, arthropods, molluscs, echinoderms, and chordates

Question 5

what incomplete and complete digestive system?

Answer 5

Incomplete, the digestive system has only one opening to the outside of the body that serves as both mouth and anus.

The complete, digestive system has two openings, mouth, and anus.

Question 6

what are the two types of circulatory systems?

Answer 6

two types are:
open type - blood is pumped out of the heart and the cell and tissue are directly bathed in it

closed type - blood is circulated through a series of vessels of varying diameters (arteries, veins, and capillaries)