Origin of Life & Early Cellular Evolution — NEET Biology
📚 Practice ConceptPolysaccharides, etc.). These capsules reproduced their molecules perhaps. The first cellular form of life did not possibly originate till about 2000 million years ago. These were probably single-cells. All life forms were in water environment only. This version of a biogenesis, i.e., the first form of life arose slowly through evolutionary forces from non-living molecules is accepted by majority. However, once formed, how the first cellular forms of life could have evolved into the complex biodiversity of today is the fascinating story that will be discussed below.
Assertion (A): The first cellular form of life definitely did not originate before 2000 million years ago. Reason (R): Cellular life forms have organized nucleus and membrane-bound organelles.
View solution & NCERT explanation
Correct answer: D — If the assertion is false but the reason is true.
NCERT states “The first cellular form of life did not possibly originate till about 2000 million years ago” - the qualifier “possibly” indicates uncertainty based on limited fossil evidence. The Assertion removes this qualifier making it false. The Reason is independently true describing characteristics of cellular life, but doesn’t relate to the timeline certainty issue in the Assertion.
What does NCERT say about Polysaccharides etc These capsules?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.