Question

Lenticels are

• A. Loose cells on leaves
• B. Subsidiary cells of stomata
• C. Cells for respiration in epiphytes
• D. Some loose cells on bark meant for aeration

Answer 1

The correct option is D Some loose cells on bark meant for aeration

The external phellem or cork is impermeable to conduction or exchange of gases. There are a few gaps in cork. In these gaps, there are groups of parenchyma cells (complementary tissue). These structures are called as lenticels. These help in exchange of gases, between the atmosphere and inner cortical cells.

Thus, the correct answer is option D.