Question

In plants, the parenchyma cells with larger air spaces among them is known as:
a. Stellate parenchyma
b. Angular arranged parenchyma
c. Angular parenchyma
d. Aerenchyma

Answer 1

Hint: The superficial permanent tissues that are serene of similar cells that organize themselves to perform many plant functions are called Parenchyma tissues. These permanent tissues are said to consist of air and water in themselves. These cells are generally called isodiametric. It is because they are extended correspondingly and ominously fluctuate in syllable structure laterally with composition.

Complete answer:
- These permanent tissues consist of a thin wall, which is categorized under the living cells. Besides, their cell walls are made up of cellulose.
- In such types of cells, there is the presence of intercellular space, and the cytoplasm usually is vacuolated. The Parenchyma cells, which contain large intercellular spaces between them, are called Aerenchyma.
- In the locations of petioles and midribs of Canna and banana leaves, the Stellate parenchyma cells are present. We can say that these are examples of aerenchymatous tissues that are made up of parenchyma cells. These are found in marine plants.
- Angularly arranged parenchyma is the intermittently organized cells which are thickening at corners. However, they contact other cells. The plants like Datura, Cucurbita contain such types of cells.
- Angular parenchyma is the cells that are said to be angular and polygonal in the framework. This parenchyma is habitually densely packed, lacking intercellular spaces.

Hence, the correct answer is option (C).

Note: Aerenchyma is a type of spongy tissue. It arranges the channels of spaces or air in different parts of plants like leaves, stems, and roots. It is mainly found in marine and marshland plants. They similarly offer buoyancy to aquatic plants like lotus and help them to float.