Organ & Organ System — NEET Biology MCQs with Solutions
Free NEET Biology Organ & Organ System MCQs with step-by-step solutions (6 questions). Part of Structural Organisation in Animals. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Organ & Organ System · easy · theory
A group of different tissues organised to perform a specific function forms an:
A. Organ system
B. Tissue
C. Cell
D. Organ ✓ Correct
Solution: Organs (e.g. stomach, heart) are made of two or more tissue types working together.
Q2 — Organ & Organ System · easy · theory
Organs that together carry out a coherent set of functions constitute an:
A. Tissue system
B. Organ system ✓ Correct
C. Cell
D. Organ
Solution: Organ systems (e.g. digestive, circulatory) are groups of organs coordinating a major function.
Q3 — Organ & Organ System · medium · theory
The correct hierarchy of structural organisation in complex animals is:
A. Cells → tissues → organs → organ systems ✓ Correct
B. Tissues → cells → organs
C. Organs → cells → tissues
D. Organ systems → organs → cells → tissues
Solution: Increasing complexity: cell → tissue → organ → organ system → organism.
Q4 — Organ & Organ System · medium · theory
The division of labour among organ systems increases efficiency because:
A. Each system specialises in a particular set of functions ✓ Correct
B. It reduces the number of cells
C. All cells do everything
D. It removes the need for coordination
Solution: Specialisation of organ systems allows efficient performance of complex life processes, coordinated by neural/endocrine control.
Q5 — Organ & Organ System · hard · theory
The heart is an organ (not a tissue) because it:
A. Is built of several tissue types (cardiac muscle, connective, epithelial, neural) ✓ Correct
B. Is made of a single tissue
C. Has no specific function
D. Cannot function on its own
Solution: Organs contain multiple integrated tissues; the heart combines cardiac muscle, connective, epithelial (endocardium) and neural tissue.
Q6 — Organ & Organ System · hard · theory
Coordination among organ systems in higher animals is achieved chiefly by the:
A. Skeletal system alone
B. Integumentary system
C. Digestive system only
D. Neural and endocrine (nervous + hormonal) systems ✓ Correct
Solution: The nervous system (fast) and endocrine system (slower, sustained) together integrate the activities of all organ systems.