Porifera and Cnidaria

Question 1

What porifera are simple, sessile and acquatic filter feeders and are aggregates of cells and do not for tissue?

Answer 1

Sponges

Question 2

What part of the sponge is the internal cavity of the sponge?

Answer 2

Spongocoel

Question 3

What part of the sponge are pores where food particles enter?

Answer 3

Ostia

Question 4

What part of the sponge are exit pores?

Answer 4

Oscula

Question 5

What part of the sponge are tubular cells surrounding the ostia?

Answer 5

Porocytes

Question 6

What part of the sponge are collared and flagellated cells; major filter feeding cells?

Answer 6

Choanocytes

Question 7

What part of the sponge are cells that make up the outer covering of the sponge?

Answer 7

Pinacocytes

Question 8

What pat of the sponge are amoeboid cells that travel within the sponge’s middle layer and perform varioious functions such as transport and production of spongin and spicules?

Answer 8

Amoebocytes

Question 9

What are mineralized structures that make up the skeleton of the sponge?

Answer 9

Spongin and spicules

Question 10

What porifera class are the SIMPLEST sponges and spicules are rod or needle shaped and made of calcium carbonate?

Answer 10

Calcarea

Question 11

What porifera class have spicules that are 6-rayed and are made of silica?

Answer 11

Hexactinellida

Question 12

What porifera class have spongin fibers and siliceous spicules and have a wide variety of shaped?

Answer 12

Demospongiae

Question 13

What porifera class have siliceous spicules that have an amorphous core and only sponges with a collagen basement membrane?

Answer 13

Homoscleromorpha

Question 14

What are radially symmetric hollow bodies organisms where tissues are present and oral cavities are surrounded by circumoral tentacles?

Answer 14

Cnidaria

Question 15

What part of the cnidaria are stinging cells used for feeding and defense?

Answer 15

Cnidocytes

Question 16

What part of the cnidaria are gel-like substances that make up structures?

Answer 16

Mesoglea

Question 17

What part of the cnidaria are sensory cells?

Answer 17

Rhopalia

Question 18

What stage of cnidaria is the larval state?

Answer 18

Planula

Question 19

What stage of cnidaria is the sessile stage?

Answer 19

Polyp

Question 20

What stage of cnidaria is the pelagic stage?

Answer 20

Medusa

Question 21

What polyp type is for gastrovascular activities?

Answer 21

Gastrozooids

Question 22

What polyp type is for reproduction?

Answer 22

Gonozooids

Question 23

What surrounds the colonial body of polyps?

Answer 23

Theca

Question 24

What cnidaria class are solitary or colonial organisms with a dominant polyp form?

Answer 24

Hydrozoa

Question 25

What cnidaria class are true jellyfish and have a dominant medusa form?

Answer 25

Scyhozoa

Question 26

What cnidaria class are box jellyfish and bells are cuboids in cross section?

Answer 26

Cubozoa

Question 27

what cnidaria class have stalks?

Answer 27

Staurozoa

Question 28

What cnidaria class are corals and anemones and do not have medusa stages?

Answer 28

Anthozoa