Which one of the following plants does not show plasticity? (NEET 20...
Understanding Plant Plasticity
Plasticity in plants refers to the ability of a plant to change its growth and development in response to environmental conditions. Different species exhibit varying degrees of plasticity based on their adaptability to different habitats.
Plants Listed in the Question
- a) Coriander
- b) Buttercup
- c) Maize
- d) Cotton
Why Maize Does Not Show Plasticity
- Genetic Makeup: Maize (Zea mays) has a highly uniform genetic structure due to selective breeding. This homogeneity limits its ability to adapt to varying environmental conditions.
- Growth Form: Maize plants are typically tall and rigid with a specific growth form that is optimized for specific conditions. This leads to reduced plasticity compared to other species that can alter their form based on environmental cues.
- Specific Habitat: Maize is often cultivated in controlled agricultural settings, which minimizes the need for adaptations that would be necessary in more variable natural environments.
Comparison with Other Plants
- Coriander: Exhibits plasticity by adjusting its growth based on light and moisture availability.
- Buttercup: Can change its flower size and shape depending on soil and water conditions.
- Cotton: Shows adaptability in terms of growth duration and fiber production based on environmental factors.
Conclusion
In summary, maize's limited plasticity is due to its genetic uniformity, specific growth form, and cultivation in controlled environments. In contrast, coriander, buttercup, and cotton demonstrate significant plasticity, allowing them to thrive in diverse conditions.
Which one of the following plants does not show plasticity? (NEET 20...
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called plasticity e.g. heterophylly in cotton, coriander and larkspur. In such plants, leaves of juvenile plant are different in a shape from those in mature plants.
Maize does not show plasticity.
Topic in NCERT: Plant growth and development
Line in NCERT: "plants follow different pathways in response to environment or phases of life to form different kinds of structures. this ability is called plasticity, e.g., heterophylly in cotton, coriander and larkspur."