The Question is from neet-botany , and it was created by the author NISHANTH

Question

A defining feature of living organisms is their ability to respond to stimuli. Which of these is an example of a plant responding to a stimulus?

NISHANTH · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Stimulus and Response in Living Organisms
 **Related Topics**: Plant physiology, Tropisms, Phototropism
 **Prerequisites**: Basic understanding of living organisms and their characteristics.
## SOLUTION PATHWAY
**Given Information**:
  The question asks for an example of a plant responding to a stimulus.
  Options include various physical processes.
**Method & Steps**:
 1. Analyze each option to determine if it represents a response to a stimulus by a living organism.
  Reasoning: A stimulus is a detectable change in the internal or external environment that evokes a response. A response is a reaction to a stimulus.
  Formula/Rule:  N/A
 2. Option A: A rock rolling down a hill is a purely physical process, not a biological response to a stimulus.
  Working: Rocks are non-living and do not respond to stimuli.
  Key Point:  Distinguish between physical processes and biological responses.
 3. Option B: Water evaporating from a puddle is a physical process, not a biological response.
  Working: Evaporation is a physical change driven by temperature and not a response by a living organism.
  Key Point:  Understand the difference between living and non-living entities.
 4. Option C: Phototropism in a sunflower is a classic example of a plant responding to a stimulus (light).
  Working: Sunflowers turn their heads (grow towards) the sun, demonstrating a response to light.
  Key Point: Phototropism is a plant's growth response to light.
 5. Option D: Salt dissolving in water is a physical process, not a biological response.
  Working: Dissolving salt is a chemical change, not a biological response to a stimulus.
  Key Point:  Focus on biological processes.
 6. Therefore, only option C demonstrates a plant responding to a stimulus (light).
  Result: Phototropism in a sunflower (Option C)
  Verification: The definition of a stimulus and response is satisfied by this example.
 ## OPTION ANALYSIS
A :x: This is a purely physical process involving a non-living object.
B :x: This is a physical process of evaporation, not a biological response.
C ✓: Phototropism is a plant's directional growth response to a light stimulus.  This is a classic example of a living organism responding to its environment.
D :x: This is a chemical process, not a biological response by a living organism.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing physical processes with biological responses:  Carefully consider whether the process is driven by a living organism reacting to a change in its environment.
  2.Failing to understand the definition of a stimulus and response: A stimulus is a detectable change that evokes a response from a living organism.
 **Quick Tips**:
  1.Identify the living organism in the option and look for a change in its behavior or growth in response to the surrounding environment.
  2. Remember the key characteristics of living organisms, including their ability to respond to stimuli.

NISHANTH · Answer

A rock rolling down a hill

NISHANTH · Answer

Water evaporating from a puddle

NISHANTH · Answer

The correct Option is "Phototropism in a sunflower"

NISHANTH · Answer

Salt dissolving in water

NEET Botany MCQs

Select Chapter

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

NEET Subjects

Our Bots

Company