Question

Which among the following are correct statements? A. Protophloem is a part of secondary phloem B. Included phloem constitutes phloem strands in secondary xylem C. Secondary phloem originates from procambium D. Internal phloem constitutes phloem strands in pith E. Included phloem constitutes phloem strands in pith. Choose the correct answer from the options given below:

• A. A and E only
• B. B and D only
• C. B and E only
• D. C and D only

Hint:

Remember that secondary phloem develops from vascular cambium and included phloem is part of it.

Answer 1

The Correct Option is B

Step 1: Concept
Plant Anatomy

Step 2: Meaning
Understanding the structure of phloem in plants, specifically focusing on secondary phloem and its origin.

Step 3: Analysis
Option A is incorrect as protophloem is part of primary, not secondary, phloem. Option B is correct since included phloem does form phloem strands within the secondary xylem ring. Option C is incorrect because secondary phloem originates from vascular cambium, not procambium. Option D is incorrect as internal phloem is part of the primary phloem and is found in the pith, not in the secondary structure. Option E reiterates B and is correct.

Step 4: Conclusion
Included phloem forms phloem strands within the secondary xylem ring, while internal phloem is a component of the primary phloem located in the pith. Final Answer: (B)