What is the correct answer to the plasticity NEET 2026 question?
Correct answer: D) Plasticity. The plasticity NEET 2026 question tests a plant’s ability to develop different structures in response to its surroundings. It does not describe cells regaining the ability to divide, so dedifferentiation is not the answer.
Restated question: A plant develops different leaf forms in response to its surroundings. Which biological ability does this demonstrate?
This is a Biology question under Plant Physiology, tagged medium on this question bank’s scale. The bank’s expected solving time is 30 seconds, not an observed student average. The deciding clue is the link between environmental conditions and leaf development, rather than appearance alone.
How does heterophylly lead to option D, plasticity?
Plasticity allows plants to follow different developmental pathways in response to the environment or phases of life, producing different structures. The official solution applies this definition to leaf form. Match the stem to the definition before checking the distractors.
- Unpack heterophylly. It means the occurrence of different leaf forms on the same plant. This identifies what varies: the form of an organ.
- Identify the stated trigger. The stem supplies environmental conditions. It describes leaf development responding to surroundings, not recovery after a force or renewed cell division.
- Recall the developmental rule. Plants can follow different developmental pathways in response to their environment or phases of life. These are alternative triggers within the same definition.
- Connect pathways to structures. Different pathways produce different structures. The ability to do this is plasticity; heterophylly illustrates it through variation in leaf form.
- Match the definition to the option. Environment-linked development of different leaves fits plasticity directly. Therefore, select D.
The official solution names cotton, coriander and larkspur. Their standard heterophylly examples concern differences between juvenile and mature leaf forms, so they illustrate life-stage-related plasticity, not specifically environmental heterophylly.
That distinction does not change the answer. The stem uses an environmental trigger; these examples use developmental stage. Both are covered by the definition of plasticity.
Why are the other three options incorrect?
Only D names the developmental ability described. Redifferentiation and dedifferentiation describe changes in cellular differentiation status; elasticity concerns mechanical recovery. Check whether the stem supplies each option’s defining feature.
- A) Redifferentiation
Defining feature: Dedifferentiated cells mature again into specialised cells and lose the capacity to divide.
Stem evidence: Absent. No sequence of renewed division followed by specialisation is described.
- B) Elasticity
Defining feature: Recovery of shape after a deforming force is removed.
Stem evidence: Absent. The stem concerns development of leaf forms, not mechanical recovery.
- C) Dedifferentiation
Defining feature: Living differentiated cells regain the capacity to divide under suitable conditions.
Stem evidence: Absent. No regained division capacity is stated.
- D) Plasticity
Defining feature: Different developmental pathways produce different structures in response to environment or life stage.
Stem evidence: Present. Environmental conditions are linked directly to different leaf forms.
Why would choosing C be a reasoning error?
Choosing C would assume a cellular event that the question never supplies. The faulty inference is: the leaves look different, therefore their cells must have dedifferentiated. A change in organ form does not, by itself, establish a particular cellular differentiation process.
The missing evidence is explicit: no differentiated cells are said to regain division capacity. By contrast, formation of interfascicular cambium from living differentiated cells illustrates dedifferentiation because those cells regain that capacity.
Plasticity and cellular differentiation processes can occur together. The issue is which phenomenon the stated evidence identifies, not which other processes might occur during development.
If the marking scheme awards four marks for D and minus one for C, the score difference is:
Use this check before selecting an option: identify what changed, then identify the evidence supplied, before naming the process.
Can you apply the distinction to three related questions?
Different developmental forms indicate plasticity; regained division capacity indicates dedifferentiation. These are original related practice questions, not verified past-paper questions. Choose using the stem’s evidence, then check the answer and explanation immediately below each question.
Question 1: In buttercup, submerged leaves and leaves growing in air have different forms. What does this illustrate?
Answer: A) Environmental plasticity. Submerged conditions and exposure to air are associated with different leaf development. The evidence concerns the environment and the resulting organ form, not cells regaining division capacity or a leaf recovering after deformation.
Question 2: Juvenile and mature cotton plants bear leaves of different forms. Which statement is correct?
Answer: B) This illustrates plasticity associated with life stage. Plasticity includes responses to phases of life, not only surroundings. The different trigger still fits the definition, and different leaf forms alone do not prove dedifferentiation.
Question 3: Living differentiated cells regain division capacity while forming interfascicular cambium. What is this process?
Answer: C) Dedifferentiation. Regained division capacity supplies the defining evidence absent from the main question. Redifferentiation would describe subsequent specialisation with loss of that capacity, not its recovery.
Before your next attempt, recall these cues:
- Different developmental forms → plasticity
- Regained division capacity → dedifferentiation
- Subsequent specialisation → redifferentiation
Next step: the past-paper archive on NEET JEEnius AI and search past NEET papers by year, subject or chapter, each with a worked solution (100 free searches a month).
Related on NEET JEEnius AI: Some Basic Concepts NEET 2026: n-Butane Combustion.
Frequently asked questions
What is the correct answer to the plasticity NEET 2026 question?
The correct answer to the question discussed is D) Plasticity. Developing different leaf forms in response to environmental conditions demonstrates plasticity, not cells regaining the ability to divide.
What is heterophylly, and how does it show plasticity?
Heterophylly is the occurrence of different leaf forms on the same plant. It illustrates plasticity when different developmental pathways produce those forms in response to environmental conditions or phases of life.
What is the difference between plasticity and dedifferentiation?
Plasticity is the ability to develop different structures in response to the environment or life stage. Dedifferentiation occurs when living differentiated cells regain the capacity to divide. Different leaf forms alone do not establish dedifferentiation.
Are cotton and buttercup examples of the same type of plasticity?
Both illustrate plasticity, but the stated triggers differ. Juvenile and mature cotton plants show life-stage-related differences in leaf form, while submerged and aerial buttercup leaves illustrate environmental plasticity.