Which one of the following statements is correct?

Correct option is A

Unitary Organisms:
· Organisms that have a fixed structure, determined largely at birth, and grow in a predictable pattern.
· Examples: Birds, mammals, and most animals have a defined body plan and growth pattern.
Modular Organisms:
· Organisms that grow by repeatedly producing similar modules, such as leaves, branches, or polyps.
· These organisms do not have a fixed structure and can adapt their growth based on environmental conditions.
· Examples: Trees, corals, and some plants grow modularly by adding repetitive units.
Information Booster: 1. Growth Pattern Differences:
· Unitary Organisms: Predictable, with a fixed body plan (e.g., animals).
· Modular Organisms: Flexible, with indeterminate growth (e.g., trees).
2. Ecological Significance:
· Modular growth allows plants to adapt to environmental changes, such as light and nutrient availability.
· Unit-based growth in animals ensures a consistent body structure for survival and reproduction.
3. Examples:
· Unitary: Humans, birds, reptiles.
· Modular: Trees, shrubs, and corals.