Question

Date: Worksheet 12 " I Section #: Course Grade in the chart below for each class of Echinodermata Ophituroides Eahinodes HoloudeCraide GbatacterAsteroidea Holothuroidea Crinoidea Madreporite Tube feet Means of respiration Spines Aristotle's lantern Polian vesicle Larva type

Answer 1

Hi Answer:

Please find the filled table below:

Character	Asteroidea	Ophiuroidea	Echinoidea	Holothuroidea	Crinoidea
Madreporite	Water vascular system of Asteroidea open up at madrporite, which further leads to stone canal which is further attached to ring canal and 5 radial canals.	Water is brought into the body by madreporite, which is present on the ventral surface.	One of the genital plate serves as madreporite and by this seawater is drawn in.	Is unattached to the coelom and present internally which laying beneath the pharyanx in the CD-interambulacral position.	Not connected to sea water by madreporite like other echinoderms but only connected through a large numbers of pores to the coelom.
Pedicellaria	Is a small wrench- or claw-shaped appendage with movable jaws, called valves and characterstics of this class.	Absent	Present	Absent	Absent
Tube feet	Tube feet is present at the underside of their body. The tube feet allow the starfish to move along the ocean bottom and open upon the scallops and clams they hunt for food.	The tube feet of ophiuroids lack suckers and ampullae.	Tube feet is present and operated hydraulically with the water vascular system.	have a slender and elongate body lacking tube feet.	Have numerous tube feet with sensory functions.
Means of respiration	By diffusion across the surfaces in their body	Gas exchange and excretion occur through cilia-lined sacs called bursae which opens between the arm bases on the underside of disk.	By tube feet	extract oxygen from water in a pair of "respiratory trees"	Oxygen is absorbed primarily through the tube feet and gas exchange took place at the large surface area of arms.
Spines	either without spines or with only 1 or 2 stout spines	arms generally bear delicate spines	Have spines, which are movable and anchored in sockets in the test which are long and prominent.	Lack spines	Have aboral spines and may have terminal claws.
Aristotle’s lantern	present	Present	Present	A pharyngeal collar surrounds the esophagus, which is homologous to Aristotle's Lantern.	Present
Polian vesicle	Present	Present	Present	Present	Absent
Larva type	Called an bipinnaria larva	Present	Pluteus larva	Called auricularia larva	Called Pentactula larava