#human body

ZOOLOGY

Which structure in the skeletal system helps protect the heart and lungs?

The rib cage encloses and protects vital organs like the heart and lungs. 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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Endocrine System and Hypothalamus Pituitary Axis

Which of the following statements about the endocrine system is correct?

Endocrine glands are ductless and release hormones directly into the bloodstream for transport to target organs.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine System and Hypothalamus Pituitary Axis

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Endocrine System and Hypothalamus Pituitary Axis

Which of the following glands is referred to as the "master gland" in the human endocrine system?

The pituitary gland is called the "master gland" as it controls the functions of other endocrine glands by releasing various hormones.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine System and Hypothalamus Pituitary Axis

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Appendicular Skeleton - Limb Bones

Which of the following movements is an example of flexion?

Flexion decreases the angle between two bones, such as bending the elbow.

Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Limb Bones

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Skeletal System - Axial Skeleton - Ribs Sternum

Which movement occurs when a limb moves toward the midline of the body?

Adduction is the movement of a limb toward the midline of the body, such as bringing the arms to the side.

Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum

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Micturition Disorders and Accessory Excretory Organs

Which of the following conditions is caused by the inflammation of the glomerulus?

Glomerulonephritis is an inflammatory condition of the glomerulus, affecting kidney function.

Ref: NCERT Class 11 Biology Chapter 16: Excretory Products and their Elimination Micturition Disorders and Accessory Excretory Organs

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Micturition Disorders and Accessory Excretory Organs

Which of the following conditions is associated with an absence of ADH?

Diabetes insipidus is caused by a deficiency of ADH, leading to excessive urine output and dehydration.

Ref: NCERT Class 11 Biology Chapter 16: Excretory Products and their Elimination Micturition Disorders and Accessory Excretory Organs

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Micturition Disorders and Accessory Excretory Organs

Which of the following excretory products is eliminated through sweat glands?

Small amounts of urea are excreted through sweat glands in the skin.

Ref: NCERT Class 11 Biology Chapter 16: Excretory Products and their Elimination Micturition Disorders and Accessory Excretory Organs

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Circulatory System - Comparative and Evolutionary Aspects

Which organ synthesizes most plasma proteins?

The liver synthesizes major plasma proteins like albumin and fibrinogen.

Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Circulatory System - Comparative and Evolutionary Aspects

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Lymph and Circulatory Pathways

What is the function of lymph in the body?

Lymph helps in the absorption of fats from the small intestine through lacteals.

Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways

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Lymph and Circulatory Pathways

Which of the following is correct about the circulatory system?

Systemic circulation distributes oxygenated blood from the left ventricle to body tissues and returns deoxygenated blood to the right atrium.

Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways

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Lymph and Circulatory Pathways

Which of the following statements about erythropoiesis is correct?

Erythropoietin is a hormone released by the kidneys that stimulates RBC production in bone marrow.

Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways

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