NECO 2002 Biology · Question 17

Which statement about how all life started is NOT true according to current thinking on evolutionary trends?

Options

  1. A.animals to plant life
  2. B.aquatic to terrestrial forms
  3. C.non-specialization to specialization in functions
  4. D.simple to complex forms
  5. E.unicellularity to multicellularity

Answer: A. animals to plant life

Explanation written with AI and checked against the answer key

Analyzing the question: We're asked which statement is NOT true of evolutionary trends. Four options describe accepted trends, and one does not.

Concept: According to current evolutionary thinking, life began in water as simple, single-celled organisms. Over time, life diversified in these general directions:

  • Simple to complex forms
  • Unicellular to multicellular organisms
  • Aquatic to terrestrial habitats
  • Generalized (non-specialized) to specialized structures and functions

Checking each option:

  • A. Animals to plant life: This is not true. Plants and animals did not evolve from one another. They diverged from common unicellular ancestors, and the earliest life was likely simple, single-celled, and either autotrophic or heterotrophic. Plants did not arise from animals. ✗
  • B. Aquatic to terrestrial forms: True. Life moved from water to land. ✓
  • C. Non-specialization to specialization: True. Cells and organs became specialized for particular functions. ✓
  • D. Simple to complex forms: True. ✓
  • E. Unicellularity to multicellularity: True. ✓

Exam tip: In "NOT true" questions, look for the option that reverses a known direction or claims one kingdom came from another. Evolutionary trends always run from simple to complex, water to land, and general to specialized. Plants and animals are separate branches, not one leading to the other.

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