Question

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levels of organization

1. which of the following sequences represents the levels of biological organization from smallest to largest?

a) organism → cell → tissue → organelle → organ system → organ
b) organelle → organ system → cell → organism → tissue → organ
c) organelle → cell → tissue → organ → organ system → organism
d) organ system → organ → organism → cell → tissue → organelle

Explanation:

• Organelle: It is a sub - cellular structure (smallest in the context of biological organization among the given options).
• Cell: Composed of organelles.
• Tissue: A group of similar cells performing a specific function.
• Organ: Made up of different tissues.
• Organ system: Composed of related organs.
• Organism: Composed of different organ systems.

Answer:

C. organelle → cell → tissue → organ → organ system → organism