Previous Year Questions

Practice Questions

Browse and practice real questions from previous scholarship exams. Use filters to narrow down by year, subject, or exam.

Displaying 4291 - 4295 of 5614
Hard
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2026 . Sample
Q. 477
What is the term for a change in the DNA sequence of an organism that can introduce new variations?
Easy
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
Q. 478
What term is used for structures in different organisms that have a similar basic structure but different functions, indicating common ancestry (e.g. the forelimbs of a human, bat, and whale)?
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2026 . Sample
Q. 479
In humans, which chromosome combination determines that a child will be male?
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
Q. 480
The preserved remains or traces of organisms from the remote past are called what, and are important evidence for evolution?
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
Q. 481
Organisms that break down dead and decaying organic matter, recycling nutrients back into the ecosystem, are called what?