Invertebrates

Question 1

vertebrates

Answer 1

an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes

Question 2

Invertebrates

Answer 2

an animal that does not have a backbone

Question 3

Consumer

Answer 3

a mass of nerve cells

Question 4

Ganglion

Answer 4

the digestive tract

Question 5

Gut

Answer 5

a body cavity that contains the internal organs

Question 6

Coelom

Answer 6

the body cavity in metazoans, located between the intestinal canal and the body wall

Question 7

Bilateral Symmetry

Answer 7

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

Question 8

Radial Symmetry

Answer 8

symmetry around a central axis, as in a starfish

Question 9

Asymmetry

Answer 9

lack of equality or equivalence between parts or aspects of something

Question 10

Sponges

Answer 10

he members of the phylum Porifera

Question 11

Cnidarians

Answer 11

an aquatic invertebrate animal of the phylum Cnidaria

Question 12

Flatworms

Answer 12

phylum of relatively simple soft-bodied invertebrate animals

Question 13

Roundworms

Answer 13

roundworms constitute the phylum Nematode

Question 14

Mollusks

Answer 14

an invertebrate of a large phylum which includes snails, slugs, mussels, and octopuses

Question 15

Open circulatory system

Answer 15

a circulatory system in which the circuity fluid is not contained entirely in the vessels

Question 16

Closed circulatory system

Answer 16

have the blood closed at all times within vessels of different size and wall thickness

Question 17

Annelid worms

Answer 17

also known as the ringed worms or segmented worms

Question 18

Exoskeleton

Answer 18

a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection

Question 19

Compound eye

Answer 19

an eye consisting of an array of numerous small visual units, as found in insects and crustaceans

Question 20

Antenna

Answer 20

either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods

Question 21

Metamorphosis

Answer 21

the process of transformation from an immature form to an adult form in two or more distinct stages

Question 22

Endoskeleton

Answer 22

an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates

Question 23

Water vascular system

Answer 23

a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels