Notifications
Clear all
0
29/08/2020 6:57 pm
Topic starter
The long bones are hollow and connected by air passage. They are characteristic of
(a) aves
(b) mammalia
(c) reptilia
(d) sponges
1 Answer
0
29/08/2020 6:58 pm
(a) aves
Explanation:
Presence of air passages in the bones (pneumatic bones) is a characteristic of birds.