Please provide a brief explanation to the correct answers my

Please provide a brief explanation to the correct answers (my answers are in bold). Thank you

1) which of the following is NOT true of the Kingdom Animalia?

a) multicellular

b) eukaryotic

c) cell walls present

d) heterotrophic

e) mobile at some point in their lives

2) Animals that are attached to the substrate and do not move through the environment are called

a) sessile

b) anisogamos

c) biotic

d) planktonic

e) bilateral

3) The cavity inside of the sponge is called

a) choanocyte

b) porocyte

c) spongocoel

d) spongilla

e) spongocyst

4) The Platyhelminthes have which type of digestive system

a) none

b) gastrovascular cavity

c) complete

5) Which phylum has a body composed of a head, thorax, and abdomen?

a) Nematoda

b) Annelida

c) Platyhelminthes

d) Arthropoda

e) Mollusca

6) The cavity inside of the sponge is lined with flagellated cells called:

a) spongocysts

b) porocytes

c) choanocytes

d) spongocoels

e) spongilla

7) the wings of insects are on which body segment?

a) head

b) thorax

c) abdomen

8) The stiff bristles in the parapodia of the polychaete worms are called:

a) septa

b) nephridia

c) setae

d) cuticle

e) oscula

9) Sea Stars (\"Starfish\") belong to which class?

a) Asteroidea

b) Echinoidea

c) Holothuroidea

d) Arachnida

e) Ophiuroidea

10) The Skeletal elements in the Porifera are called:

a) cartilage

b) endoskeleton

c) spicules

d) exoskeleton

e) bones

Solution

Answer:

1). C). Cell walls present

Cell wall is present in plants and bacteria but not present in animals.

2). a) sessile

A sessile animal is one that spends the majority of its adult life attached to or rooted in the substrate and unable to move around. This definition excludes creatures like crinoids and most sea anemones, but includes: Sponges, Stony and soft corals, suspension-feeding annelids, brachiopods, bryozoans and tunicates.

3). c) spongocoel

The spongocoel is the large, central cavity of sponges. Water enters the spongocoel through hundreds of tiny pores (Ostia) and exits through the larger opening (osculum).

4). b) gastrovascular cavity

An incomplete digestive system has a gastrovascular cavity and only one opening for digestion. Platyhelminthes (flatworms), Ctenophora (comb jellies), and Cnidaria (coral, jelly fish, and sea anemones) have this type of digestive system. Gastrovascular cavities are typically a blind tube or cavity with only one opening, the “mouth”, which also serves as an “anus”.

5). d) Arthropoda

Animal body of Arthropoda phylum is composed of head, thorax and abdomen with three or more pairs of jointed legs; chitinous exoskeleton covering all body parts, molted at intervals