sponges and cnidarians

Question 1

where are sponges found

Answer 1

under water, in fast moving currents, mostly in salt water with a few fresh water exceptions

Question 2

what are spicuoles

Answer 2

they are small mineralised shards found in sea sponges that act as scaffolding as well as defence, they can be categorised into two groups, megascleres and microscleres.

Question 3

what are some sponge shapes

Answer 3

vase, basket and lobal/spherical and irregular

Question 4

what are the three body types and their sizes

Answer 4

ascon(smaller) sycon(small to medium) leucon(larger)

Question 5

how do sponges move water

Answer 5

using flagellated cells known as choanocytes

Question 6

describe the polyp and medusa body forms

Answer 6

umbrella shaped and if you didnt be able to draw it kys

Question 7

what habitats are cnidarians found

Answer 7

under water, in fast moving currents, mostly in salt water with a few fresh water exceptions

Question 8

what are the layers of cnidarian

Answer 8

gastroderm mesoglea and epiderm

Question 9

what form of nervous system do they contain

Answer 9

decentralised

Question 10

what forms of cell differentiation if any exist in cnidarians

Answer 10

cnidarians can have cell differentiation such as muscle nerves and stinging cells as well as distinct body layers (2)