Table of Contents
Frog Morphology Short Notes
In this article we will discuss about the Frog Morphology
Frog Morphology
- Rana tigrina is the most common species of frog
- They are poikilotherms or cold blooded
- Frog is almost cosmopolitan nearby watery areas
- Frogs use camouflage to avoid predators
- The summer sleep of the frog is known as aestivation
- The winter sleep of the frog is known as hibernation
- The sound made by the male frog during breeding season is called croaking. It is a call for mating
- Size varies from 18 to 20cm in length and 5 to 8cm in width
- Body of frog is adapted for burrowing, jumping and swimming
- The frog never drinks water but absorb it through the skin
- The body of the frog is divided into head and trunk
- Both neck and tail are absent
Head
- Head is triangular & its anterior conical part is called snout
- Two openings are present tip of snout is called nostrils
- Pair of nostrils helps in respiration
- On top of head pair of eyes are present. In eyes upper eyelid is immovable, lower eyelid is freely moveable and nictitating membrane arises from lower eyelid
- Frog lacks external ear. The ear drum or tympanum is present behind and below each eye
- In male vocal sacs are present, croaking during breeding season
Trunk
- Head is broadly joined behind with the flat trunk
- Two pairs of limbs are attached to its trunk
Fore limb
- The fore limb is shorter than the hind limb
- Fore limbs that end in four digits
- In male frog ventral side of first digit copulatory pad enlarge during breeding season
- This pad help the male frog to grip the female during copulation
Hind limb
- They are larger and muscular
- The hind limbs end in five digits
- They have webbed digits that help in swimming
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