The Question is from neet-botany anatomy-of-flowering-plants , and it was created by the author B VENKAT

Question

In a typical dorsiventral dicot leaf, the spongy mesophyll is characterized by:

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant anatomy, specifically the structure of dicot leaves.
 **Related Topics**: Photosynthesis, gas exchange, transpiration.
 **Prerequisites**: Basic understanding of plant cell types and tissue organization.
## SOLUTION PATHWAY
**Given Information**:
  The question asks about the characteristics of the spongy mesophyll in a dorsiventral dicot leaf.
  Dorsiventral leaves have distinct upper and lower surfaces.
**Method & Steps**:
 1. Understanding the function of spongy mesophyll:
  Reasoning: The spongy mesophyll is involved in gas exchange (CO2 uptake and O2 release) during photosynthesis.
  Formula/Rule: None directly applicable.
 2. Analyzing the options:
  Working: Option A describes palisade mesophyll which is tightly packed for maximum light absorption. Option B describes parenchyma cells, which may store water and nutrients but this is not the primary characteristic of spongy mesophyll. Option D describes specialized cells found in various parts of the plant but not specifically defining spongy mesophyll. Option C accurately describes the loosely arranged cells with large intercellular spaces, ideal for efficient gas exchange.
  Key Point: The large intercellular spaces in the spongy mesophyll allow for easy diffusion of gases.
 3. Final step:
  Result: Option C is the correct answer.
  Verification: The structure of spongy mesophyll directly supports its function in gas exchange.
 ## OPTION ANALYSIS
A :x: Tightly packed cells are characteristic of the palisade mesophyll, which is responsible for light absorption. Spongy mesophyll is not tightly packed.
B :x: While some cells in the spongy mesophyll might store some water and nutrients, this is not their primary function or defining characteristic.
C ✓: Loosely arranged cells with large intercellular spaces are the defining feature of spongy mesophyll, facilitating efficient gas exchange.
D :x:  The presence of crystals and tannins is not a defining characteristic of the spongy mesophyll. These may be present in other parts of the leaf, but not uniquely defining the spongy mesophyll.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing spongy mesophyll with palisade mesophyll: Remember their different functions and structural characteristics.
  2.Overlooking the importance of intercellular spaces: The large intercellular spaces are crucial for gas exchange.
 **Quick Tips**:
  1.Remember the key function of spongy mesophyll: gas exchange.
  2.Visualize the structure: Imagine loosely packed cells with large air spaces between them.

B VENKAT · Answer

Tightly packed cells maximizing light absorption.

B VENKAT · Answer

Large, thin-walled cells storing water and nutrients.

B VENKAT · Answer

The correct Option is "Loosely arranged cells with large intercellular spaces facilitating gaseous exchange."

B VENKAT · Answer

Specialized cells containing crystals and tannins.

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