Chondrichthyes?

0 ⤊

some things i need to kno about Chondrichthyes for science pls. thanx!!!

1. Asexual or sexual reproduction?

2. skeleton/muscles?

3. circulatory systems (veins, hearts, lungs)

4. digestion/excretion

2007-04-18 15:10:33 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Biology

1 answers

(1) sexual
(2) both - interesting skeleton, read the wiki page
(3) veins, hearts, gills
(4) big teeth, the usual digestion/excretion you would expect (well ... okay, not all of them have big teeth)

Read the wiki page

2007-04-19 02:07:58 · answer #1 · answered by Orinoco 7 · 0⤊ 0⤋