Question

Identify the incorrect statement(s) about the frog:
i. The ventral side of the frog's skin is olive green.
ii. The body of a frog can be divided into head, neck and trunk.
iii. The eyes of frogs are protected by a nictitating membrane.
iv. Absence of vocal sacs are a characteristic feature of male frogs.

• A. i and iv
• B. i, ii and iv
• C. ii, iii and iv
• D. i, ii, iii and iv
  

Answer 1

The correct option is B i, ii and iv

The ventral side of the frog’s skin is pale yellow and the dorsal side is olive green in colour. The body of the frog is divided into head and trunk. Absence of the neck ensures that there are no injuries, as the frog jumps on the land.
In female frogs, vocal cords are either rudimentary or absent. Presence of vocal cords is the characteristic feature of male frogs. A distinct sound, known as croaking, is produced by the male is used during the mating season.
The nictitating membrane, present in the eyes of the frog, helps it see in water.