The difference in structure, morphological and behavior of plant and animal is called

Analyze the question The question asks for the term used for differences in structure, morphology (form) and behavior among living organisms (plants and animals).

Explain the concept

• Adaptation: a feature that helps an organism survive in its particular environment (e.g., a camel's hump).
• Evolution: the gradual change in species over many generations.
• Variation: the differences in structure, form, physiology and behavior seen among organisms, whether between species or between individuals of the same species.
• Succession: the gradual replacement of one community by another in an area over time (e.g., grass → shrubs → forest).

Solution

1. The question is about differences in structure, form and behavior. It is not about fitting an environment (adaptation), change over generations (evolution) or community replacement (succession).
2. The word that simply describes these differences is variation.
3. Check the other options: • A: adaptation describes how a feature suits the environment, not the difference itself. • B: evolution is a process over time. • D: succession is an ecological process.

Answer: C. variation

Exam tip When you see "difference" or "differences" in a Biology question, think variation. Remember: Variation = Visible differences. Also note that adaptation = "adjusting to the environment" and succession = "one community succeeding another".