Which option gives the correct scientific basis of control in plants?
Answer and explanation
Correct answer: Changes in growth and movement through chemical substances
The governing concept is coordination in plants. Plants lack a brain, spinal cord, and animal-like nervous system, so they coordinate many responses through chemical messengers such as plant hormones. These chemicals alter cell division, elongation, growth direction, and sometimes movements. Hence option A is correct; the remaining options incorrectly apply animal nervous-system structures to plants.
Frequently asked questions
What is the correct answer to this question?
Changes in growth and movement through chemical substances
Why is this the correct answer?
The governing concept is coordination in plants. Plants lack a brain, spinal cord, and animal-like nervous system, so they coordinate many responses through chemical messengers such as plant hormones. These chemicals alter cell division, elongation, growth direction, and sometimes movements. Hence option A is correct; the remaining options incorrectly apply animal nervous-system structures to plants.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
