Invertebrates

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 organism or organic matter

Question 3

innate behavior

Answer 3

an inherited behavior that does not depend on the environment or expierence

Question 4

learned behavior

Answer 4

a behavior that has been learned from expierenced

Question 5

territory

Answer 5

an area that is occupied by one animal or a group of animals that do not allow other animals

Question 6

hibernation

Answer 6

a period of inactivity and lowered body temperature that some animals undergo in winter

Question 7

estivation

Answer 7

a period on inactivity and lowered body temperature that some animals undergo in the summer

Question 8

circadian rhythm

Answer 8

a biological daily cycle

Question 9

social behavior

Answer 9

interaction between the same species of animals

Question 10

communication

Answer 10

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

Question 11

pheromone

Answer 11

a substance that is released by the body and causes another individual of the same species

Question 12

invertabrate

Answer 12

an animal that does not have a backbone

Question 13

ganglion

Answer 13

a mass of nerve cells

Question 14

gut

Answer 14

the digestive tract

Question 15

coelom

Answer 15

a body cavity that contains the internal organs

Question 16

open circulatory system

Answer 16

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

Question 17

closed circulatory system

Answer 17

a circulatory system in which the heart circulates blood through a network of blood vessels that form a closed loop

Question 18

exoskeleton

Answer 18

a hard external supporting structure

Question 19

compound eye

Answer 19

an eye composed of many light detectors

Question 20

antenna

Answer 20

a feeler that is on the head of the invertabrate

Question 21

metamorphosis

Answer 21

a phase in the life cycle of many animals during which a rapid change from the immature form of an organism to the adult form takes place

Question 22

endoskeleton

Answer 22

an internal skeleton made of bone or cartilage

Question 23

water vascular system

Answer 23

a system of canals filled with a watery liquid that circulates throughout the body of an echinoderm