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anja@phs.ae anja@phs.ae
wrote...
Posts: 480
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6 years ago
Placoid scales are found on:
  a. fleshy-finned fishes.
  b. cartilaginous fishes.
  c. ray-finned fishes.
  d. lampreys.
  e. hagfishes

Question 2

Lungs first evolved in which group?
  a. cartilaginous fishes
  b. bony fishes
  c. lampreys
  d. coelacanths
  e. lungfishes
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Replies
wrote...
6 years ago
Answer to q. 1

b

Answer to q. 2

b
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