Animal Kingdom

Question 1

Represent the overwhelming majority of the phylum Chordate with currently about 64,000 species described.

Answer 1

Vertebrates

Question 2

Are animals that neither possess nor develop a vertebral column, derived from the notochord.

Answer 2

Invertebrates

Question 3

A person or thing that eats or uses something.

Answer 3

Consumer

Question 4

A noncancerous lump, often on the tendons or joints of wrists and hands.

Answer 4

Ganglion

Question 5

The stomach or belly.

Answer 5

Gut

Question 6

Located between the intestinal canal and the body wall.

Answer 6

Coelom

Question 7

is a characteristic of animals that are capable of moving freely through their environments. Compare radial symmetry.

Answer 7

Bilateral Symmetry

Question 8

arrangement of parts of an organism around a single main axis, so that the organism can be divided into similar halves by any plane that contains the main axis.

Answer 8

Radial Symmetry

Question 9

lack of equality or equivalence between parts or aspects of something; lack of symmetry.

Answer 9

Asymmetry

Question 10

They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells.

Answer 10

Sponges

Question 11

is a phylum containing over 10,000 species of animals found exclusively in aquatic environments: they are predominantly marine species. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey.

Answer 11

Cnidarians

Question 12

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

Answer 12

Flatworms

Question 13

constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a very broad range of environments.

Answer 13

Roundworms

Question 14

compose the large phylum of invertebrate animals known as the Mollusca. Around 85,000 extant species of molluscs are recognized.

Answer 14

Mollusks

Question 15

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

Answer 15

Open circulatory system

Question 16

Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill body cavities.

Answer 16

Closed circulatory system

Question 17

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

Answer 17

Annelid worms

Question 18

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

Answer 18

Segment

Question 19

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

Answer 19

Exoskeleton

Question 20

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

Answer 20

Compound eye

Question 21

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

Answer 21

Antenna

Question 22

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

Answer 22

Metamorphosis

Question 23

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

Answer 23

Endoskeleton

Question 24

is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet.

Answer 24

Water vascular system