The Question is from neet-botany mineral-nutrition , and it was created by the author K SURESH KUMAR

Question

Which element is a constituent of the middle lamella in plant cells?

K SURESH KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant cell structure and composition
 **Related Topics**: Cell wall, pectin, intercellular cement
 **Prerequisites**: Basic knowledge of plant cell anatomy
## SOLUTION PATHWAY
**Given Information**:
  The question asks about the elemental composition of the middle lamella.
  The options are Potassium, Magnesium, Calcium, and Iron.
**Method & Steps**:
 1. Identify the primary component of the middle lamella.
  Reasoning: The middle lamella is the outermost layer of the plant cell wall, acting as a cementing layer between adjacent cells.
  Formula/Rule:  No specific formula is needed here; this is based on biological knowledge.
 2. Recall the chemical composition of the middle lamella.
  Working: The middle lamella is primarily composed of pectin, a complex carbohydrate.
  Key Point: Pectin is a polysaccharide containing calcium ions ($Ca^{2+}$) that cross-link the pectin molecules, contributing to the structural integrity of the middle lamella.
 3. Determine which element from the options is a key component of pectin.
  Result: Calcium ($Ca^{2+}$) is the crucial element in the middle lamella's structure.
  Verification: The presence of calcium pectate contributes to the stability and adhesion between plant cells.
 ## OPTION ANALYSIS
A :x: Potassium is involved in various plant processes but is not a primary constituent of the middle lamella.
B :x: Magnesium is important for chlorophyll synthesis and enzyme activity but not a major component of the middle lamella.
C ✓: Calcium is a crucial component of the middle lamella, forming calcium pectate.
D :x: Iron is important in various metabolic processes, including photosynthesis, but is not a primary constituent of the middle lamella.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing the middle lamella with other cell wall layers:  Remembering that the middle lamella is distinct from the primary and secondary cell walls is crucial.
  2.Focusing on the overall cell wall composition instead of the middle lamella's specific components: It's essential to differentiate between the components of the various layers of the cell wall.
 **Quick Tips**:
  1.Remember the role of calcium pectate in cementing plant cells together.
  2.Visualize the middle lamella as the 'glue' between adjacent plant cells.

K SURESH KUMAR · Answer

Potassium

K SURESH KUMAR · Answer

Magnesium

K SURESH KUMAR · Answer

The correct Option is "Calcium"

K SURESH KUMAR · Answer

Iron

NEET Botany Mineral Nutrition MCQs

Select Topic

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

NEET Subjects

Our Bots

Company