A group of similar cells working together is called:
AAn organ
BA tissue
CAn organelle
DAn organism
Answer & Solution
Correct answer: B. A tissue
1. Biological organisation runs from cells upward.
2. The level immediately above the single cell groups like cells together.
3. A group of similar cells working together is called a tissue.
4. Organs are built from several tissues, and an organelle is a structure inside one cell.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 4 'Cell Structure', sections 4.1-4.6_
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