simple invertebrate

Question 1

primitive invertebrate animals comprising the sponges and having a cellular grade

Answer 1

porifera

Question 2

phylum of more or less radially symmetrical invertebrate animals that lack a true body cavity, possess tentacles studded with nematocysts, and include the hydroids, jellyfishes, sea anemones, and corals.

Answer 2

cnidaria

Question 3

also known as the ringed worms or segmented worms, are a large phylum

Answer 3

annelida

Question 4

also known as the ringed worms or segmented worms, are a large phylum

Answer 4

hydriod

Question 5

free-swimming marine coelenterate with a jellylike bell- or saucer-shaped body that is typically transparent and has stinging tentacles around the edge.

Answer 5

jellyfish

Question 6

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

Answer 6

platyhelminthes

Question 7

having a tough outer cuticle. The group includes free-living forms and disease-causing parasites,

Answer 7

nematoda

Question 8

small nematoid worm that inhabits the rectum of the human host.

Answer 8

pinworms

Question 9

bothria that aid in attaching to their host, as well as a thin, long strobila body resembling a strip of tape or ribbon.

Answer 9

tapeworms

Question 10

shell consisting of two halves hinged together

Answer 10

bivalves

Question 11

usually with a univalve shell or none and a distinct head bearing sensory organs.

Answer 11

gastropods

Question 12

univalve shell or none and a distinct head bearing sensory organs.

Answer 12

coelomate

Question 13

invertebrate lacking a coelom especially

Answer 13

acoelomate

Question 14

rrangement of parts of an organism around a single main axis, so that the organism can be divided into similar halves

Answer 14

radial symmetry

Question 15

lack or absence of symmetry

Answer 15

asymmetry

Question 16

balanced distribution of duplicate body parts or shapes within the body of an organism.

Answer 16

bilateral symmetry

Question 17

unjointed part extending from the body of certain animals, such as an octopus, jellyfish, or sea anemone.

Answer 17

tentacle

Question 18

explosive cell containing one giant secretory organelle or cnida

Answer 18

cindocyte

Question 19

one of the three primary germ layers in the very early embryo

Answer 19

ectoderm

Question 20

e innermost of the primary germ layers of an animal embryo.

Answer 20

endoderm

Question 21

female gonad or reproductive gland, in which the ova and the hormones that regulate female secondary sex characteristics develop.

Answer 21

ovary

Question 22

produce and store sperm and are also the body’s main source of male hormones, such as testosterone

Answer 22

teste