Question

Identify P, Q, R, S and T in the given T.S. of dicot stem showing secondary growth and select the correct option

• A. P-Primary phloem, Q-Primary xylem, R-Vascular cambium, S-Secondary xylem, T-Secondary phloem
• B. P-Secondary xylem, Q-Primary xylem, R-Secondary phloem, S-Primary phloem, T-Vascular cambium
• C. P-Primary xylem, Q-Secondary xylem, R-Vascular cambium, S-Secondary phloem, T-Primary phloem
• D. P-Primary xylem, Q-Secondary xylem, R-Vascular cambium, S-Primary phloem, T-Secondary phloem

Answer 1

The correct option is C P-Primary xylem, Q-Secondary xylem, R-Vascular cambium, S-Secondary phloem, T-Primary phloem

P - Primary xylem - is the xylem that is formed during the primary growth from procambium of apical meristems.

Q - Secondary xylem - is the type of xylem formed from secondary growth.

R - Vascular cambium - is the main growth tissue in the stems and roots.

S - Secondary phloem - is a type of phloem that forms from the vascular cambium during the secondary growth.

T - Primary phloem - is a type of phloem that forms from the procambium during the primary growth.

So, the correct answer is (c).