simple invertebrate

Question 1

Porifera

Answer 1

which is composed of three distinct groups, the Hexactinellida (glass sponges), the Demospongia, and the Calcarea (calcareous sponges).

Question 2

. Cnidaria

Answer 2

a phylum containing over 10,000 species of animals found exclusively in aquatic environments their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey.

Question 3

Annelida

Answer 3

a group commonly referred to as segmented worms, and they are found worldwide from the deepest marine sediments to the soils in our city parks and yards.

Question 4

Hydroid

Answer 4

pertaining to the hydroidea.

Question 5

. Jellyfish

Answer 5

medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria.

Question 6

Platyhelminthes

Answer 6

are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.

Question 7

Nematoda

Answer 7

are bilaterally symmetrical, worm-like organisms that are surrounded by a strong, flexible noncellular layer called a cuticle. Their body plan is simple.

Question 8

. Pinworms

Answer 8

is a parasitic worm.

Question 9

Tapeworms

Answer 9

Cestoda is a class of parasitic worms in the flatworm phylum.

Question 10

. Bivalves

Answer 10

an aquatic mollusk that has a compressed body enclosed within a hinged shell, such as oysters, clams, mussels, and scallops.

Question 11

Gastropods

Answer 11

a mollusk of the large class Gastropoda, such as a snail, slug, or whelk.

Question 12

Coelomate

Answer 12

have a body cavity called a coelom with a complete lining called peritoneum derived from mesoderm

Question 13

Acoelomate

Answer 13

an invertebrate lacking a coelom

Question 14

Radial Symmetry

Answer 14

symmetry around a central axis, as in a starfish or a tulip flower.

Question 15

Asymmetry

Answer 15

lack of equality or equivalence between parts or aspects of something; lack of symmetry.

Question 16

Bilateral Symmetry

Answer 16

the property of being divisible into symmetrical halves on either side of a unique plane.

Question 17

Tentacle

Answer 17

a slender flexible limb or appendage in an animal, especially around the mouth of an invertebrate, used for grasping, moving about, or bearing sense organs.

Question 18

Cnidocyte

Answer 18

is an explosive cell containing one giant secretory organelle or cnida (plural cnidae) that defines the phylum Cnidari

Question 19

Ectoderm

Answer 19

the outermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the epidermis and nerve tissue.

Question 20

. Endoderm

Answer 20

the innermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the lining of the gut and associated structures.

Question 21

Ovary

Answer 21

a female reproductive organ in which ova or eggs are produced, present in humans and other vertebrates as a pair.

Question 22

Teste

Answer 22

the primary male reproductive organs.