#herpetology

ZOOLOGY

What was a significant adaptation in reptiles that allowed them to dominate land environments?

Thick-shelled eggs prevented desiccation, enabling reptiles to dominate terrestrial environments. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, physiology, human health and related concepts as per latest syllabus.

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ZOOLOGY

During which process do frogs burrow in the summer to avoid extreme heat?

Frogs undergo aestivation, also known as summer sleep, to escape extreme heat. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.

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ZOOLOGY

Which part of the frog’s excretory system temporarily stores urine?

The urinary bladder stores urine temporarily before it is excreted through the cloaca. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

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ZOOLOGY

Which structure in male frogs produces sperm?

The testes in male frogs produce sperm, which is transported through the urinogenital ducts. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.

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ZOOLOGY

Which of the following structures is responsible for storing urine in frogs?

The urinary bladder in frogs temporarily stores urine before it is expelled through the cloaca. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.

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ZOOLOGY

Which of the following structures helps male frogs distinguish themselves from females?

Male frogs have vocal sacs, which help in producing calls to attract females. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, physiology, human health and related concepts as per latest syllabus.

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ZOOLOGY

Which chamber in a frog’s heart receives deoxygenated blood?

The right atrium of the frog’s heart receives deoxygenated blood from the body through the vena cava. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.

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ZOOLOGY

Which sensory organ is well-developed in frogs for detecting vibrations in water and land?

The tympanum in frogs functions as an external ear and detects sound vibrations both in water and on land. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.

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ZOOLOGY

Which of the following characteristics is common to both reptiles and birds?

Both reptiles and birds lay amniotic eggs, which provide protection and a stable environment for the developing embryo. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.

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ZOOLOGY

Which of the following statements about frog metamorphosis is correct?

During the tadpole stage, frogs use gills for respiration before developing lungs in adulthood. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

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ZOOLOGY

Which of the following characteristics is incorrect regarding amphibians?

Amphibians lay non-shelled eggs, typically in water, unlike reptiles and birds, which lay shelled eggs. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.

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ZOOLOGY

How do frogs regulate their body temperature?

Frogs are cold-blooded (poikilothermic) animals that regulate their body temperature by using external heat sources. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

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