Question

Identify the Anatomical structures based on the following characters given in a series:

• Lysigenous cavities in the vascular bundles
• Conjoint, open and endarch protoxylem in vascular bundles
• More number of stomata in abaxial epidermis

• A. Monocot stem, Dicot stem, Dicot Leaf
• B. Monocot root, Dicot root, Dicot Leaf
• C. Monocot Leaf, Dicot Leaf, Dicot stem
• D. Monocot stem, Dicot root, Monocot Leaf

Hint:

For plant anatomy questions, focus on the vascular tissue arrangement (xylem, phloem), presence of stomata, and structural features like cavities.

Answer 1

The Correct Option is A

Let's break down the given features and match them to the corresponding anatomical structures:

Lysigenous cavities in vascular bundles: These cavities are commonly found in monocots, particularly in their stems. They are characteristic of monocot vascular tissue arrangements, where the xylem is more primitive, with open protoxylem vessels.

Conjoint, open and endarch protoxylem: In monocot stems, the vascular bundles are scattered, and the xylem is endarch, meaning the protoxylem is positioned towards the center. These are crucial features of monocot stems.

More number of stomata in abaxial epidermis: Dicot leaves usually have a higher number of stomata on the lower side (abaxial epidermis), and this is a common trait in dicotyledonous plants.

Based on these features:

• Monocot stem: Exhibits the described vascular and protoxylem features (Lysigenous cavities, open protoxylem).
• Dicot stem: Is also included, as it aligns with some of the vascular characteristics but differs from monocots in overall vascular arrangement.
• Dicot leaf: Is the right match for the stomatal arrangement described.

Thus, the correct answer is (1) Monocot stem, Dicot stem, Dicot Leaf.

Answer 2

To solve the problem, we need to identify the anatomical structures based on the given characteristics.

1. Understanding the Given Characteristics:
The question provides the following anatomical features to be identified:
Lysigenous cavities in the vascular bundles: These are characteristic of monocots, where cavities are formed due to the breakdown of cells in the vascular bundle.
Conjoint, open and endarch protoxylem in vascular bundles: This feature is typical of monocots, where the xylem and phloem are arranged together (conjoint) and the protoxylem is oriented towards the center (endarch).
More number of stomata on the abaxial epidermis: This characteristic suggests a dicot leaf, as dicot leaves generally have more stomata on the lower side of the leaf (abaxial epidermis).

2. Identifying the Anatomical Structure:
Based on the given characteristics, the structure described is a monocot stem with dicot leaf characteristics.

3. Analyzing the Options:
(A) Monocot stem, Dicot stem, Dicot leaf: This matches the description, as monocot stems have lysigenous cavities and conjoint, open protoxylem. The presence of more stomata on the abaxial epidermis fits with dicot leaf characteristics.
(B) Monocot root, Dicot root, Dicot leaf: The root characteristics do not match the provided description.
(C) Monocot leaf, Dicot leaf, Dicot stem: This does not match the description accurately, as the monocot leaf has different vascular bundle characteristics.
(D) Monocot stem, Dicot root, Monocot leaf: The root characteristics do not fit with the given description.

Final Answer:
The correct answer is Option A: Monocot stem, Dicot stem, Dicot leaf.