Question

Which of the following represents the correct
combination without any exception ?
Characteristics
Class
(a) Sucking and circular Cyclostomata
mouth: jaws absent,
integument without
scales, paired
appendages
(b) Body covered with Aves
feathers; skin moist and
glandular, fore- limbs
form wings; lungs with
air sacs
(c) Mammary gland; hair Mammalia
on body: pinnae, two
pairs of limbs.
(d) Mouth ventral; gills Chondrichthyes
without operculum; skin
with placoid scales;
persistent notochord.





Refer pic for question​

Answer 1

Answer:

option B is correct on Aves is the categories consisting of birds etc

thanks please mark as brainliest