Standard Science Primary 3 Diversity

Jun Jie saw a plant floating on the surface of a pond. Which part of the plant helps it to stay afloat?

A Its long roots reaching the bottom
B Its thin, flexible stem
C Its tiny flowers
D Its swollen leaf stalks filled with air
Show Worked Solution

Worked Solution

Step 1: To float, a plant needs to be less dense than water. Step 2: Swollen leaf stalks containing air (like in Water Hyacinth) provide buoyancy. Step 3: This allows the plant to stay on the surface to get sunlight.

Correct answer: Its swollen leaf stalks filled with air

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free