Plants do not have a nervous system. How do they respond to stimuli?
Answer and explanation
Correct answer: Through chemical substances and directed growth
Plants lack a brain, nerves, and muscles like animals, but they can still coordinate responses. Chemical messengers such as plant hormones move between cells and influence growth. A difference in growth on opposite sides can bend a shoot, while some responses involve changes in cell water content. Therefore, chemical substances and directed growth explain plant responses; the animal structures in options B, C, and D do not perform this role in plants.
Frequently asked questions
What is the correct answer to this question?
Through chemical substances and directed growth
Why is this the correct answer?
Plants lack a brain, nerves, and muscles like animals, but they can still coordinate responses. Chemical messengers such as plant hormones move between cells and influence growth. A difference in growth on opposite sides can bend a shoot, while some responses involve changes in cell water content. Therefore, chemical substances and directed growth explain plant responses; the animal structures in options B, C, and D do not perform this role in plants.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
