Kranz Anatomy is found ina)Flowerb)Seedc)Leavesd)StemCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Kranz anatomy is a special structure in the leaves of plants, that have a C4 pathway of carbon dioxide fixation. The leaves contain a ring of mesophyll cells, containing a few small chloroplasts concerned with the initial fixing of carbon dioxide, surrounding a sheath of parenchyma cells (the bundle sheath) which has large chloroplasts involved in the Calvin cycle. C4 photosynthesis is found in many plant species, mostly in monocots (such as maize, sugar cane and several grasses) but also in many dicots (such as amaranth and flaveria).

Answer

See 11th NCERT pg no 218 bro

Answer

In the leaves of C4 plants, bundle sheath cells are present in the form of rings around the vascular bundle. The arrangement is called kranz and the anatomy is called kranz type of anatomy.
So, the correct option is ‘Leaves’.

Answer

Introduction:
In the study of plant anatomy, the term 'kranz anatomy' refers to a specialized structure found in the leaves of certain plants. It is primarily associated with C4 plants, which have a unique mechanism of carbon fixation that allows them to thrive in hot and dry environments. Kranz anatomy plays a crucial role in this carbon fixation process, making it an important feature to understand in plant physiology.

Explanation:
Kranz anatomy is found in leaves. Here is a detailed explanation of why this is the correct answer:

1. Definition of Kranz Anatomy:
Kranz anatomy refers to the arrangement of cells in the leaves of certain plants, especially C4 plants. It consists of concentric layers of cells, characterized by two types of cells: bundle sheath cells and mesophyll cells.

2. Bundle Sheath Cells:
Bundle sheath cells are the innermost layer of cells surrounding the vascular bundles (veins) in leaves. These cells are tightly packed and have a thick cell wall. They are responsible for housing the specialized enzyme-rich organelles called chloroplasts, where the carbon fixation process occurs in C4 plants.

3. Mesophyll Cells:
Mesophyll cells are the outer layer of cells surrounding the bundle sheath cells. They are loosely packed and contain numerous chloroplasts. These cells are primarily involved in the initial fixation of carbon dioxide via the enzyme Rubisco during the process of photosynthesis.

4. Role in Carbon Fixation:
The kranz anatomy plays a vital role in the carbon fixation process of C4 plants. These plants have developed a mechanism to minimize the wasteful process of photorespiration, which occurs in C3 plants. In C4 plants, carbon dioxide is initially fixed into a four-carbon compound in the mesophyll cells and then transported to the bundle sheath cells, where it is converted back into carbon dioxide and enters the Calvin cycle. This spatial separation of the initial and final steps of carbon fixation is facilitated by the kranz anatomy.

5. Benefits of Kranz Anatomy:
The kranz anatomy provides several advantages to C4 plants. It increases the efficiency of carbon fixation by concentrating carbon dioxide around the enzyme Rubisco in the bundle sheath cells. It also minimizes photorespiration, as the carbon dioxide concentration is higher within the bundle sheath cells compared to the surrounding environment. This adaptation allows C4 plants to thrive in hot and dry environments with high light intensity and limited water availability.

Conclusion:
In conclusion, kranz anatomy is a specialized structure found in the leaves of certain plants, particularly C4 plants. It consists of bundle sheath cells and mesophyll cells arranged in concentric layers. The kranz anatomy plays a crucial role in the carbon fixation process of C4 plants, allowing them to efficiently utilize carbon dioxide and minimize photorespiration.

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

Top Courses for NEET

Suggested Free Tests

Related Content

About NEET

NEET Preparation Material

How to Prepare for NEET Exam?

NCERT Based Study Material

NEET Mock Tests

Other Popular Exams

Company