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Questions and Answers
What is the characteristic of a frog's body temperature?
What is the characteristic of a frog's body temperature?
- Varies with the environment (correct)
- Always remains high
- Constant and regulated internally
- Always remains low
What is the purpose of the nictitating membrane in a frog's eyes?
What is the purpose of the nictitating membrane in a frog's eyes?
- To protect the eyes while in water (correct)
- To change the color of their eyes
- To produce sound
- To aid in vision underwater
What is the difference between a frog's hindlimbs and forelimbs?
What is the difference between a frog's hindlimbs and forelimbs?
- Forelimbs are smaller and less muscular
- Forelimbs are larger and more muscular
- Hindlimbs are larger and more muscular (correct)
- Hindlimbs are smaller and more muscular
How do frogs absorb water?
How do frogs absorb water?
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What is a characteristic of male frogs?
What is a characteristic of male frogs?
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Study Notes
Morphology and Anatomy of Frogs
- Frogs belong to the class Amphibia and thrive in both water and land environments.
- Rana tigrina is a common species of frog found in India.
Physiological Characteristics
- Frogs are poikilothermic, meaning their body temperature varies with the environment.
- They can change color for camouflage and exhibit mimicry.
- They aestivate and hibernate seasonally.
Body Structure
- Frogs have smooth, mucus-covered skin that helps in water absorption.
- They do not drink water, as they absorb it through their skin.
- Their body is divided into head and trunk, with no neck or tail.
- Key features of the head include nostrils, bulging eyes with a nictitating membrane, and a tympanum (ear).
Limbs
- Frogs have limbs that aid in swimming, walking, leaping, and burrowing.
- Hindlimbs are larger and more muscular, ending in five digits.
- Forelimbs are less muscular, ending in four digits.
- Feet have webbed digits for swimming.
Sexual Dimorphism
- Males have vocal sacs for sound production and a copulatory pad on the first digit of their forelimbs.
- Females lack these features.
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