Bryozoa

Question 1

Lophotrochozoa

Answer 1

A taxa of protostome animals. It comprises two groups, the trochozoans and the lophophorata.

Question 2

Mesocoel

Answer 2

The middle of three coelomic spaces found in the tripartate body plan characteristic of the deuterostome lineage of animals. The other coelomic compartments are the protocoel and metacoel.

Question 3

Metacoel

Answer 3

The last of three coelomic spaces found in the tripartate body plan characteristic of the deuterostome lineage of animals. The other coelomic compartments are the protocoel and mesocoel.

Question 4

Polypide

Answer 4

The soft part of the ectoproct in Bryozoans, that includes the visceral mass and the lophophore and can be retracted into the cystid.

Question 5

Protocoel

Answer 5

The first of three coelomic spaces found in the tripartate body plan characteristic of the deuterostome lineage of animals. The other coelomic compartments are the mesocoel and metacoel.

Question 6

Pyloric stomach

Answer 6

the pylorus or pyloric part, connects the stomach to the duodenum.

Question 7

Schizocoelous

Answer 7

Of the type of development found in protosomes. Initially solid masses of mesoderm split to form coelomic cavities.

Question 8

Statoblast

Answer 8

a means to reproduce asexually by a method that is unique among bryozoans and enables a colony’s lineage to survive the variable and uncertain conditions of freshwater environments. They are the overwintering stage of the life cycle, and after the parent colony dies and disintegrates, they lay dormant in the sediments until the spring. When favorable conditions return, the tissue inside the statoblast completes its development into a single zooid that discards its protective casing to become the ancestrula of the new zoarium.

Question 9

Tripartite coelom

Answer 9

Characteristic of the deuterostome line of animals. The coelom forms with three separate compartments referred to as the protocoel, mesocoel, and metacoel.

Question 10

U shaped gut

Answer 10

Sessile animals that live in burrows or shells by necessity have a U-shaped gut with the mouth and anus located close to each other. The trick is to position the anus so that its wastes can’t mistakenly enter the mouth.

Question 11

Zoarium

Answer 11

a colony of colonial Bryozoans.

Question 12

Zooeicium

Answer 12

the exoskeleton of a Bryozoan. The zooecium may be flexible or rigid depending on exoskeletal composition… chitin, protein, or calcium carbonate.

Question 13

Zooid

Answer 13

a single animal that is part of a colonial animal. In Bryozoans, individual zooids are connected to each other through pores and the funicular system, creating large colonial organisms composed of thousands of individual microscopic zooids.