Question

_________ are any unicellular or colonial organism that lacks true tissues.
plants
protists
fungi
animals

Explanation:

To solve this, we analyze each option:

• Plants: Multicellular with true tissues (e.g., dermal, vascular), so not the answer.
• Protists: Includes unicellular or colonial organisms (like some algae, protozoa) and lacks true tissues (they don't have specialized tissue systems like higher organisms).
• Fungi: Most are multicellular (like molds, mushrooms) with organized structures, not typically unicellular/colonial with no true tissues in the described sense.
• Animals: Multicellular with complex tissue systems (e.g., epithelial, muscle), so not the answer.

Answer:

B. protists