Question

Choose between the two options to answer the question specified in the brackets for the following.
An example is illustrated.
Example: Corolla or Calyx (Which is the outer whorl?) Answer: Calyx
Lenticels or stomata (Which one remains open always?)

Answer 1

Lenticels helps in the exchange of gases between the atmosphere and internal tissue of the stem. They remain open always. Stomata is present on the leaves. They control exchanges of gases between the atmosphere and internal tissue. Guard cells controls opening and closing of stomata.