Phylum Porifera

Question 1

A network of flexible fibres in softer sponges

Answer 1

Spongin

Question 2

A symbiotic relationship in which only one individual benefits and with no effect on the other

Answer 2

Commensalism

Question 3

Fertilization of the egg inside the body

Answer 3

Internal fertilization

Question 4

A symbiotic relationship in which both individuals benefit

Answer 4

Mutualism

Question 5

Within a cell

Answer 5

Intercellular

Question 6

Organisms that sift food particles from the water

Answer 6

Filter feeder

Question 7

A fertilized egg

Answer 7

Zygote

Question 8

Specialized cells that make the sponge’s skeleton

Answer 8

Archaeocyte

Question 9

The process of moving fluids through the body

Answer 9

Circulation

Question 10

Mouth first, anus second

Answer 10

Protostome

Question 11

Spike shaped structure of calcium carbonate or silica

Answer 11

Spicule

Question 12

Cells with flagella for creating a current of water

Answer 12

Choanocytes

Question 13

Groups of archaeocytes that are produced in times of unfavourable environmental conditions

Answer 13

Gemmules

Question 14

Movement of molecules through medium from areas of high concentration to areas of low concentration

Answer 14

Diffusion

Question 15

The opening atop a sponge in which water leaves the sponge

Answer 15

Osculum

Question 16

Reproduction requiring only one parent

Answer 16

Asexual

Question 17

An immature developmental stage of an organism

Answer 17

Larva

Question 18

The process of removing waste products from the body

Answer 18

Excretion

Question 19

Sponges and coral

Answer 19

Porifera

Question 20

Body design lacking symmetry

Answer 20

Asymmetrical

Question 21

A method of asexual reproduction

Answer 21

Budding

Question 22

The process of exchanging gases in the body

Answer 22

Respiration