cyclostomata

Question 1

class of vertebra that’s ectoparasitic

Answer 1

they are cyclostomata

Question 2

how many gill slits they posses

Answer 2

around 6 to 15 PAIRS

Question 3

agnatha or gnathostomata

Answer 3

agnatha [does not posses jaw]

Question 4

explain their spawning process

Answer 4

they are marine but move to fresh water for spawning and once done the parent dies in few days while the larva after metamorphosis moves back to marine

Question 5

cranium and vertebral column is made up of

Answer 5

it is cartilaginous

Question 6

circulATION

Answer 6

closed

Question 7

examples are

Answer 7

petromyzon [lamprey], myxine [hagfish]