FOOD TEST BIOLOGY PRACTICAL QUESTION WITH ANSWERS PDF
Until 2008, NECTA biology practicals contained three questions. Question 1 was required, and was a food test. Students then chose to answer either question 2 or question 3.
One of these questions was usually classification. The format changed in 2008. Now, the practical contains two questions, and both are required.
Food test and classification remain the most common questions, but sometimes only one of these two topics is on a given exam.
The second question may cover one of a variety of topics, including respiration, transport, coordination, photosynthesis, and movement.
Each question is worth 25 marks.
Common Practicals
_ Food test: students must test a solution for starch, sugars, fats, and protein
_ Classification: students must name and classify specimens, then answer questions about their characteristics
_ Respiration: students use lime water to test air from the lungs for carbon dioxide
_ Transport: students investigate osmosis by placing leaf petioles or pieces of raw potato in solutions of different solute concentrations
_ Photosynthesis: students test a variegated leaf for starch to prove that chlorophyll is necessary for photosynthesis
_ Coordination: students look at themselves in the mirror and answer questions about the sense organs they see
Note: These are the most common practicals, but they are not necessarily the only practicals that can occur on the national exam. Biology practicals frequently change, and it is possible that a given exam will contain a new kind of question.
Look through past NECTA practicals yourself to get an idea of the kind of questions that can occur.
FOOD TEST BIOLOGY PRACTICAL QUESTION WITH ANSWERS PDF