The Question is from neet-botany anatomy-of-flowering-plants dicot-leaf, and it was created by the author D VINOD

Question

Considering the ontogeny of a dicot leaf, which tissue is primarily responsible for the differentiation of the palisade and spongy mesophyll layers?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant tissue development and differentiation
 **Related Topics**: Dicot leaf anatomy, meristems, ground tissue system
 **Prerequisites**: Understanding of plant tissue types (dermal, ground, vascular), meristematic activity, and leaf development.
## SOLUTION PATHWAY
**Given Information**:
  The question focuses on the ontogeny (development) of a dicot leaf and the origin of the palisade and spongy mesophyll.
  The palisade and spongy mesophyll are components of the ground tissue system.
**Method & Steps**:
 1. Identify the meristematic tissue responsible for ground tissue development.
  Reasoning:  The ground meristem is the primary meristem that gives rise to the ground tissue system in plants.  The ground tissue system includes the cortex, pith, and mesophyll in leaves.
  Formula/Rule: N/A
 2. Relate the ground meristem to the mesophyll layers.
  Working: The palisade and spongy mesophyll layers are both types of ground tissue. Therefore, they differentiate from the ground meristem.
  Key Point: Protoderm forms the epidermis, procambium forms the vascular tissue, and intercalary meristems are found in some grasses at the base of internodes and leaf blades, not directly involved in mesophyll formation.
 3. Confirm the correct answer.
  Result: The ground meristem is responsible for the differentiation of the palisade and spongy mesophyll layers.
  Verification:  The other options are incorrect as they give rise to other tissue systems (protoderm-epidermis, procambium-vascular tissue). Intercalary meristems are not directly involved in leaf mesophyll development in dicots.
 ## OPTION ANALYSIS
A :x: Protoderm forms the epidermis (outermost layer) of the leaf.
B :x: Procambium differentiates into the vascular tissues (xylem and phloem) of the leaf.
C ✓: Ground Meristem gives rise to the ground tissue system, which includes the palisade and spongy mesophyll.
D :x: Intercalary meristems are located at the base of internodes and leaf blades; they are not primarily involved in the development of the mesophyll in dicot leaves.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing ground meristem with other meristems:  Understanding the specific roles of each meristematic tissue is crucial for correct identification.
  2.Overlooking the location and function of intercalary meristems:  Knowing that intercalary meristems are not primarily involved in leaf mesophyll development in dicots is key to avoiding this error.
 **Quick Tips**:
  1.Remember the three primary meristems (protoderm, ground meristem, procambium) and their respective tissue derivatives.
  2.Associate the mesophyll with the ground tissue system to easily identify the correct meristem.

D VINOD · Answer

Protoderm

D VINOD · Answer

Procambium

D VINOD · Answer

The correct Option is "Ground Meristem"

D VINOD · Answer

Intercalary Meristem

NEET Botany Anatomy of Flowering Plants Dicot Leaf MCQs

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