Invertebrate animals

Question 1

vertebrates

Answer 1

an animal that has a backbone

Question 2

invertebrates

Answer 2

an animal that does not have a backbone

Question 3

consumer

Answer 3

an organism that eats other organisms or organic matter

Question 4

ganglion

Answer 4

a mass of nerve cells

Question 5

gut

Answer 5

the digestive tract

Question 6

coelom

Answer 6

a body cavity that contains the internal organs

Question 7

bilateral symmetry

Answer 7

the two sides of its body mirror each other, it has equal right and left sides

Question 8

radical symmetry

Answer 8

body is organized around the center like the spokes of a wheel

Question 9

asymmetry

Answer 9

its body is not organized around a center

Question 10

cnidaria

Answer 10

an aquatic invertebrate animal of the phylum Cnidaria which comprises the coelenterates

Question 11

flatworms

Answer 11

a worm of a phylum which includes the planarians together together with a parasitic flukes and tapeworms and they have a simple flattened body

Question 12

roundworms

Answer 12

they are a diverse animal phylum inhabiting a broad range of environments

Question 13

mollusks

Answer 13

an invertebrate of a large phylum which includes snails, slugs, mussels, and octopuses and they live in aquatic or damp habitats

Question 14

open circulatory system

Answer 14

blood is pumped by a heart into the body cavities where tissues are surrounded by the blood

Question 15

closed circulatory system

Answer 15

they have the blood closed at all times within vessels of different size and wall thickness and in this type of system blood is pumped by a heart through vessels and does not normally fill body cavities

Question 16

annelid worms

Answer 16

they live in a large phylum with over 22,000 extant species including rag worms, earthworms, and leeches

Question 17

exoskeleton

Answer 17

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

Question 18

compound eye

Answer 18

compound eyes are called arthropod eyes because they are made up of repeating units each of which functions as a separate visual receptor

Question 19

antenna

Answer 19

it is one of a pair of slender, movable, segmented sensory organs on the head of insects

Question 20

metamorphosis

Answer 20

it is a change of the forms or nature of a thing or person into a completely different one, by natural or supernatural means

Question 21

endoskeleton

Answer 21

it is an internal skeleton such as the bony skeletons of vertebrates

Question 22

water vascular system

Answer 22

it is a network of water vessels in the body

Question 23

sponges

Answer 23

sponges draw in a current of water to extract nutrients and oxygen