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ZOOLOGY

This zoology category covers the study of animals, from classification of major groups to the anatomy and physiology of body systems. The questions move between definitions, diagrams-based reasoning and applied problems, so you can spot the topics that still need another pass before an exam.

45 questions

ZOOLOGY

Which of the following conditions is characterized by the presence of endometrial tissue outside the uterine cavity?

Endometriosis is the condition in which endometrial tissue is found outside the uterus, often causing pelvic pain and infertility. 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 type of neuron is responsible for connecting sensory and motor neurons?

Interneurons act as connectors between sensory and motor neurons, processing and transmitting signals within the CNS. 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 is a correct statement regarding aldosterone?

Aldosterone, secreted by the adrenal cortex, regulates sodium and potassium balance by increasing sodium reabsorption and potassium excretion in the kidneys.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Chemical Coordination and Integration, Topic: Aldosterone, mineralocorticoid, sodium reabsorption in kidney.

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ZOOLOGY

Which of the following statements about amino acids is correct?

Amino acids contain an amino (-NH₂) group and a carboxyl (-COOH) group and are linked by peptide bonds, not phosphodiester bonds. 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 statements about renal circulation is correct?

The renal vein carries deoxygenated but filtered blood away from the kidney. 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 immune component is responsible for transplant rejection?

T-lymphocytes play a key role in transplant rejection by recognizing foreign tissues as non-self and attacking them. 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 muscle type is under voluntary control?

Skeletal muscles are under voluntary control and are responsible for body movements. 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 groups of animals is exclusively marine?

All echinoderms, such as starfish and sea urchins, are exclusively marine animals. 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 is an example of an analogous organ?

Wings of butterfly and bird are analogous structures, performing similar functions but having different evolutionary origins. 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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