O Level Biology Practical 2020 Answers

The GCE O Level Biology Practical Exam (Syllabus 6093) evaluates your hands-on laboratory skills, data analysis capabilities, and understanding of experimental design. Reviewing past papers like the 2020 practical exam provides critical insights into the specific biological concepts and practical techniques Cambridge examiners frequently test.

Rate of transpiration increases with temperature, air movement, and light intensity; decreases in high humidity.

In this experiment, students were tasked with estimating the concentration of glucose in five different samples (labeled A-E) representing "urine." o level biology practical 2020 answers

Dissolve sample in ethanol, shake vigorously, then pour the liquid into a test tube containing cold water. A clear solution turns into a . ✏️ Question 2: Biological Drawings & Microscopy

: Candidates were required to draw a table with clear headings (e.g., Urine sample , Time taken for colour change / s , Final colour ) and plot a bar graph of concentration against sample. The GCE O Level Biology Practical Exam (Syllabus

This task required observing 15 seedlings grown in light and 15 grown in the dark. Stem Length

: Candidates were asked to provide a line drawing of 5 tubules of a testes and calculate actual diameter using magnification. 2020 Cambridge O Level (5090/31) Practical Key Topics In this experiment, students were tasked with estimating

Use a to maintain a constant temperature. Inconsistent shaking/mixing of reagents Leads to uneven reaction rates in the test tube.

Rate=1Time taken (s)Rate equals the fraction with numerator 1 and denominator Time taken (s) end-fraction