Why does the stem of a plant usually grow towards light?
Answer and explanation
Correct answer: To receive light
Plants require light for photosynthesis, the process by which they manufacture food from carbon dioxide and water. A stem and its leaves therefore tend to grow towards available light, showing positive phototropism. Growing to lose water, escape soil, or become a root is not the biological purpose of this response. Thus, option A is correct.
Frequently asked questions
What is the correct answer to this question?
To receive light
Why is this the correct answer?
Plants require light for photosynthesis, the process by which they manufacture food from carbon dioxide and water. A stem and its leaves therefore tend to grow towards available light, showing positive phototropism. Growing to lose water, escape soil, or become a root is not the biological purpose of this response. Thus, option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
