He looked at Question 1(a). "State the function of the guard cells."
Zain sighed and ran a hand through his hair. The problem wasn’t the theory. The problem was the specificity of the 5090 . This wasn't just science; it was a code. You couldn’t just say "it gets bigger." You had to say, "the cell swells and becomes turgid." You couldn’t just say "it eats leaves." You had to say, "the locust has mandibles for cutting and chewing." biology 5090 past papers
Zain squinted. "Carbon dioxide concentration?" He looked at Question 1(a)
Around 2:00 AM, they hit the wall. It was the 2017 Paper 6, the alternative to practical. The question was a graph analysis about the effect of light intensity on the rate of photosynthesis. The problem was the specificity of the 5090
Zain smiled. He didn't just know the answer; he knew exactly how the examiner wanted him to say it.
Zain flipped the page.