Which of the following classes is incorrectly matched with its general characters?

Question

Which of the following classes is incorrectly matched with its general characters? (A) Cyclostomata: Lack jaws and paired fins and body is covered with placoid scales (B) Osteichthyes: Four pairs of gills are covered with an operculum and skin is covered with cycloid scales (C) Reptilia: Tympanum represents ear and fertilisation ' is internal (D) Aves: Endoskeleton is fully ossified and long bones are hollow with air cavities called as pneumatic bones

Tardigrade Admin · Accepted Answer

Cydostomes have a sucking and circular mouth without jaws. Their body is devoid of scales and paired fins.

Q. Which of the following classes is incorrectly matched with its general characters?

Cyclostomata: Lack jaws and paired fins and body is covered with placoid scales

Osteichthyes: Four pairs of gills are covered with an operculum and skin is covered with cycloid scales

Reptilia: Tympanum represents ear and fertilisation ' is internal

Aves: Endoskeleton is fully ossified and long bones are hollow with air cavities called as pneumatic bones

Cydostomes have a sucking and circular mouth without jaws. Their body is devoid of scales and paired fins.