saw a couple of answers provided to P3 science SA1 for Henry Park which may be incorrect.

Q5. The answer was 2. I thought the answer would be 3 instead. The question relates to their outer coverings and not habitat nor movement.

Q17. The answer was 3. I thought the answer would be 1 instead. Since plant B does not produce flowers, it cannot be reproduced by seeds. So it would either be W and X. As the leaves of both B and W have parallel veins, the answer therefore should be 1.

Q18. The answer was 2. I thought the answer would be 3. Materials X and Y do not have scratches when they were scratched by plastic or glass rods. So the materials X and Y would be harder than the rods.

Would appreciate your clarification on the above.

thanks