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

Question

In a monocot stem, the scattered vascular bundles are surrounded by a sclerenchymatous sheath.  This sheath primarily functions to:

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant anatomy and tissue function
 **Related Topics**: Monocot stem structure, sclerenchyma, vascular bundles, mechanical support
 **Prerequisites**: Basic understanding of plant tissues and their roles.
## SOLUTION PATHWAY
**Given Information**:
  Monocot stem with scattered vascular bundles.
  Vascular bundles are surrounded by a sclerenchymatous sheath.
**Method & Steps**:
 1. Identify the type of tissue: The sheath is made of sclerenchyma, a type of ground tissue characterized by cells with thick, lignified secondary walls.
  Reasoning: Sclerenchyma cells are specialized for providing structural support and strength.
  Formula/Rule: None directly applicable.
 2. Consider the function of sclerenchyma:  Sclerenchyma's rigid cell walls provide mechanical strength and support to the plant.
  Working: The sheath's location around the vascular bundles suggests its role is to support and protect these crucial transport tissues.
  Key Point:  Sclerenchyma is not involved in storage (parenchyma is), transport regulation (vascular tissues themselves do this), or gas exchange (stomata and other specialized cells handle this).
 3. Deduce the primary function: Given the properties of sclerenchyma, its placement, and the absence of other relevant functions, the primary function of the sclerenchymatous sheath is to provide mechanical strength and support to the vascular bundles.
  Result: The correct answer is C.
  Verification: The other options are incorrect because they describe functions of other plant tissues, not sclerenchyma.
 ## OPTION ANALYSIS
A :x: Starch storage is primarily the function of parenchyma cells, not sclerenchyma.
B :x: Regulation of water and nutrient transport is the function of the vascular bundles themselves, not the surrounding sheath.
C ✓: Sclerenchyma provides mechanical support, which is the primary function of the sheath.
D :x: Gaseous exchange occurs primarily through stomata and intercellular spaces, not the sclerenchymatous sheath.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing sclerenchyma with parenchyma: Remember that parenchyma is involved in storage, while sclerenchyma provides support.
  2.Overlooking the location: The sheath's position around the vascular bundles is crucial in determining its function.
 **Quick Tips**:
  1.Associate sclerenchyma with strength and support (think 'scler' like 'skeleton').
  2.Remember the key roles of different plant tissues: parenchyma (storage), collenchyma (flexible support), sclerenchyma (rigid support), xylem (water transport), phloem (nutrient transport).

D VINOD · Answer

Store starch and other carbohydrates for the plant.

D VINOD · Answer

Regulate the transport of water and nutrients within the bundle.

D VINOD · Answer

The correct Option is "Provide mechanical strength and support to the vascular bundles."

D VINOD · Answer

Facilitate gaseous exchange between the vascular tissues and the surrounding parenchyma.

NEET Botany Anatomy of Flowering Plants Monocot Stem MCQs

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