Question

Common characterstics found in chondrichthyes and osteichthyes
$a$. Streamlined body
$b$. Four pairs of gillls
$c$. Two-chambered heart
$d$. Poikilothermous (cold-blooded)
$e$. Dioecious (sexes are separate)
$f$. Internal fertilisation

• A. Three
• B. Four
• C. Five
• D. Six

Answer 1

Answer: (B)

Common characterstics found in chondrichthyes and osteichthyes:
a. Streamlined body
c. Two-chambered heart
d. Poikilothermous (cold-blooded)
e. Dioecious (sexes are separate)