10 SA1 2018 Mistakes

Let's learn from the mistakes of other students.

Be sure to get it correct in prelims!

Question 1

Topic: Living Together

Common Mistake: Not counting young and adult as 1 population

Answer: 7 population

1) Plain tiger butterflies + caterpillars

2) Speckled frog + tadpoles

3) Arrowhead

4) Hydrilla

5) Water Hyacinth

6) Fish

7) Lotus

Question 2

Topic: Adaptations

Mistake: Did not use the information from the question

Answer: Bumps on flippers (found in last sentence of paragraph)

Question 3

Topic: Cells

Question chosen because it's not common that the questions are tested in this way.

Good learning point.

Question 4

Topic: Heat

Common mistake: Confused students / no working / working in the brain thus leading to mistakes.

Answer: 2

Question 5

Topic: Heat
Common misconception: Student think that when metal gain heat and expand, the mass increase
Answer: 3

Question 6

Topic: Energy in food

Mistake: Wrong usage of words.

Answer: use "lower rate of photosynthesis" instead of "cannot photosynthesize"

Question 7

Topic: Plant Transport system
Common mistake: Most student chose 1 because the concept is that water carrying tubes are still present, so the leaves can still photosynthesise and make food.
Answer: After 14 days, the roots will die because it cannot receive food from the leaves, so water cannot be transport to the leaves and it will wilt.