Question

In which of the following phloem parenchyma is absent?
A) Maize
B) Sunflower
C) Guava
D) Banyan

Answer 1

Parenchyma is a type of simple permanent tissue because they are made up of only one type of cells. The cells of parenchyma tissues are living and thin-walled. It is distributed in all the body parts of plants. The cells are loosely packed. These can help in healing the wounds and regeneration. The reproductive parts of plants are parenchymatous in nature.

Complete answer:
Phloem tissue is a type of complex tissue because they are made up of more than one type of cells and help to move the materials in both directions. They are present in leaves of the plants and transport food from leaves to other tissues. Phloem tissue consists of four parts – sieve tubes, companion cells, phloem fibres, phloem parenchyma.

According to the question, we have to discuss the phloem parenchyma in detail. Phloem parenchyma is a type of phloem tissue and they are living and help to store food and help in its transportation. They are also called transfer cells or border parenchyma cells. They are present mainly in dicot plants such as roots, leaves, and stems but not present in the monocot plants. Sunflower, Guava, Banyan are monocot plants having only one cotyledon while maize is the dicot plant having two cotyledons.

So, the correct answer is option (A) Maize.

Note: Sieve tubes are living, elongated tube-like cells placed end to end and separated by phloem plates. Companion cells are living, elongated cells attached to sieve tubes and help in the transportation of food. Phloem fibres are dead sclerenchymatous cells and give mechanical support to the cell.