Differentiation in segmental fashion occurs in
(a) Leech
(b) Starfish
(c) Snails
(d) Ascaris
Answer is (a) Leech
Solution- Leech is a member of Annelida phylum. Their body surface is divided into segments that are identical to each other and they contain a set of organis in each segment. Their body is also covered with cuticles. Starfish belongs to Echinodermata and snail belongs to Mollusca.
The correct answer is- a)- Leech