animals and behavior

Question 1

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

Answer 1

Vertebrates

Question 2

an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc

Answer 2

Invertebrates

Question 3

a person or thing that eats or uses something.

Answer 3

Consumer

Question 4

a structure containing a number of nerve cell bodies

Answer 4

Ganglion

Question 5

the digestive tract

Answer 5

Gut

Question 6

a body cavity that contains the internal organs

Answer 6

Coelom

Question 7

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

Answer 7

Bilateral Symmetry

Question 8

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

Answer 8

Radial Symmetry

Question 9

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

Answer 9

Asymmetry

Question 10

a primitive sedentary aquatic invertebrate with a soft porous body that is typically supported by a framework of fibers or calcareous or glassy spicules

Answer 10

Sponges

Question 11

an aquatic invertebrate animal of the phylum Cnidaria

Answer 11

Cnidarians

Question 12

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

Answer 12

Flatworms

Question 13

constitute the phylum Nematoda, with plant-parasitic nematodes being known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments.

Answer 13

Roundworms

Question 14

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

Answer 14

Mollusks

Question 15

also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches

Answer 15

Annelid worms

Question 16

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

Answer 16

Exoskeleton

Question 17

visual organ found in arthropods such as insects and crustaceans. It may consist of thousands of ommatidia,

Answer 17

Compound eye

Question 18

/?

Answer 18

Antenna

Question 19

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

Answer 19

Metamorphosis

Question 20

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

Answer 20

Endoskeleton

Question 21

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

Answer 21

Water vascular system