Invertebrate Animals Vocabulary

Question 1

Embryo

Answer 1

A plant or animal at an early stage of development.

Question 2

Consumer

Answer 2

An organism that eats other organisms or organic matter.

Question 3

Innate behavior

Answer 3

An inherited behavior that does not depend on the environment or experience.

Question 4

Learned behavior

Answer 4

A behavior that has been learned from experience.

Question 5

Territory

Answer 5

An area that is occupied by one animal or a group of animals that do not allow other members of the species to enter.

Question 6

Hibernation

Answer 6

Hibernation is a state of minimal activity and metabolic depression. Hibernation is a seasonal thermometer characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It most commonly occurs during winter months.

Question 7

Estivation

Answer 7

Prolonged torpor or dormancy of an animal during a hot or dry period.

Question 8

Circadian rhythm

Answer 8

A circadian rhythm is a natural, internal process that regulates the sleep.

Question 9

Social behavior

Answer 9

The iteration between animals of the same species.

Question 10

Communication

Answer 10

A transfer of a signal or message from one animal to another that results in some type of response.

Question 11

Pheromone

Answer 11

A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species.

Question 12

Invertebrate

Answer 12

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

Question 13

Ganglion

Answer 13

A structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.

Question 14

Gut

Answer 14

The gastrointestinal tract, is the tract from the mouth to the anus which includes all the organs of the digestive system in humans and other animals.

Question 15

Coelom

Answer 15

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

Question 16

Open circulatory system

Answer 16

Open circulatory systems (evolved in insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells.

Question 17

Closed circulatory system

Answer 17

Closed circulatory systems (evolved in echinoderms and vertebrates) have the blood closed at all times within vessels of different size and wall thickness.

Question 18

Segment

Answer 18

Each of the parts into which something is or may be divided.

Question 19

Exoskeletion

Answer 19

An exoskeleton is the external skeleton that supports and protects an animal’s body, in contrast to the internal skeleton of, for example, a human. In usage, some of the larger kinds of exoskeletons are known as “shells”

Question 20

Compond eye

Answer 20

A compound eye is a visual organ found in arthropods such as insects and crustaceans.

Question 21

Antenna

Answer 21

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

Question 22

Metamorphosis

Answer 22

(In an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages.

Question 23

Endoskeleton

Answer 23

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