Which one feature is common to leech, cockroach and scorpion? (AIIMS 2004)
A. Nephridia
B. Ventral nerve cord
C. Cephalization
D. Antennae
Answer:B
Which one feature is common to leech, cockroach and scorpion? (AIIMS 2004)
A. Nephridia B. Ventral nerve cord C. Cephalization D. Antennae