Question

Parenchyma cells in the spongy mesophyll exhibit large intercellular spaces promoting:
A. To provide nutrients for the future germinating embryo
B. Greater exposure to gaseous exchange
C. To distribute pressure evenly through the structure
D. No specific reason

Answer 1

Hint:
Before we proceed into the problem, it is important to know the definition of parenchyma.
The parenchyma is the tissues and cells that make up a plant's vascular system. These tissues include the xylem, phloem, cambium (the layer of cells in between wood fibers), and sclerenchyma.

Complete step by step solution:
Parenchyma is the most common type of live plant tissue. They have more intracellular gaps, thinner cell walls, and bigger vacuoles. The fundamental purpose of the parenchyma cells of the roots and stem is to store food and water. The intercellular air gaps facilitate gas exchange.
One way that spongy mesophyll cells promote photosynthesis is by promoting large intercellular spaces. These spaces allow light to penetrate more deeply into the plant and help to transport energy from the sun to the chloroplasts. Additionally, these gaps offer a space for water vapour exchange which helps with the hydration of plants.
Therefore, Parenchyma cells in the spongy mesophyll exhibit large intercellular spaces promoting greater exposure for gaseous exchange.

Option ‘B’ is correct

Note:
Parenchyma cells are specialized cell types that typically reside within the intercellular spaces of plants. These large spaces allow for the unrestricted exchange of nutrients and water between different tissues, which enhances cell growth and helps to promote wound healing.