Question

Identify A, B, C, and D parts in the vascular bundle of monocot stem: 

• A. A - Metaxylem, B - Protoxylem, C - Phloem, D - Lysigenous cavity
• B. A - Phloem, B - Metaxylem, C - Protoxylem, D - Lysigenous cavity
• C. A - Phloem, B - Protoxylem, C - Metaxylem, D - Lysigenous cavity
• D. A - Phloem, B - Metaxylem, C - Lysigenous cavity, D - Protoxylem

Hint:

Monocot stems have vascular bundles that are scattered throughout the stem, unlike dicots which have them arranged in a circle.

Answer 1

The Correct Option is D

Step 1: Identify the Components Phloem: Responsible for the transport of nutrients, typically located on the outer side of the vascular bundle. Protoxylem: The first-formed xylem, usually located towards the center of the stem. 
Metaxylem: The later-formed xylem, typically located towards the periphery of the stem. Lysigenous cavity: 
A cavity formed by the breakdown of protoxylem elements, often found near the protoxylem. 
Step 2: Match the Components to the Labels Based on the typical arrangement in a monocot stem: 
A is likely the Phloem. B is likely the Metaxylem. C is likely the Lysigenous cavity. D is likely the Protoxylem. 
Final Answer: \[ \boxed{{A - Phloem, B - Metaxylem, C - Lysigenous cavity, D - Protoxylem}} \] This corresponds to option (4). Thank you for pointing that out!