Invertebrates

Question 1

Vertebrates

Answer 1

An animal with a backbone.

Question 2

Invertebrates

Answer 2

An animal that does not have a backbone.

Question 3

Consumer

Answer 3

An organism that feeds on other animals in the food chain.

Question 4

Ganglion

Answer 4

A mass of nerve cells.

Question 5

Gut

Answer 5

The digestive track.

Question 6

Coelom

Answer 6

A body cavity that contains the internal organs.

Question 7

Bilateral Symmetry

Answer 7

Being divisible into symmetrical halves on each side.

Question 8

Radial Symmetry

Answer 8

Symmetry around a central axis.

Question 9

Asymmetry

Answer 9

Lack of equality on both halves.

Question 10

Sponges

Answer 10

An aquatic invertebrate with a soft spongelike body.

Question 11

Cnidarians

Answer 11

An aquatic invertebrate animal of the phylum Cnidaria.

Question 12

Flatworms

Answer 12

A worm that includes the planarians together with parasitic flukes and tapeworms.

Question 13

Roundworms

Answer 13

A nematode, especially a parasitic one found in intestines of mammals.

Question 14

Mollusks

Answer 14

An invertebrate of a large phylum that includes slugs, snails, mussels, and octopusses.

Question 15

Open circulatory system

Answer 15

A system in which the circulatory fluid is not contained entirely with vessels.

Question 16

Annelid worms

Answer 16

also known as the ringed worms or segmented worms, are a large phylum, with over 17,000 extant species including ragworms,

Question 17

Exoskeleton

Answer 17

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

Question 18

Compound eye

Answer 18

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

Question 19

Closed circulatory system

Answer 19

Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness.

Question 20

Antenna

Answer 20

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.