Cinidaria

Question 1

Summarise cnidarians

Answer 1

They are very diverse that can be sessile sedentary and pelagic as there are found in both benthic and pelagic environments. They occur at all depths. They are radially symmetrical. They have a gastrovascualr cavity where they digest. They have cnidocytes that contain stinging nematocysts. Mostly carnivores. Can do both sexual and asexual reproduction

Question 2

What is the body structure of Cnidaria

Answer 2

They’re diploblastic (they body is derived from two embryonic cells
They have a medusa form and polyp form
They have true tissues
They have mucous glands and a nerve net
Nematocysts and cnidocytes unlike to Cnidaria

Question 3

How do Cnidarians feed

Answer 3

Mostly carnivores stinking prey with nematocysts

Question 4

How do cnidarians reproduce

Answer 4

Medusa stage does the sexual reproduction
Polyp stage does asexual reproduction

Question 5

Symbiosis in Cnidarians

Answer 5

Symbiotic with zooxanthellae
Symbiotic with fish and crustaceans, protection for nutrients through waste