Question

what are the two types of parenchyma. explain the two types and parenchyma​

Answer 1

There are 2 types of Parenchyma

a) aerenchyma

b) collinchyma

Answer 2

Explanation:

two types of Parenchyma are :-

1. Chlorenchyma
2. Aeronchyma

Chlorenchyma

A parenchyma cell with chloroplasts, and is therefore photosynthetic.

In leaves, they form two layers of mesophyll cells immediately beneath the epidermis of the leaf, that are responsible for photosynthesis and the exchange of gases.[5] These layers are called the palisade parenchyma and spongy mesophyll. Palisade parenchyma cells can be either cuboidal or elongated. Parenchyma cells in the mesophyll of leaves are specialised parenchyma cells called chlorenchyma cells (parenchyma cells with chloroplasts). Parenchyma cells are also found in other parts of the plant.

Aeronchyma

Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root.[1] The channels of air-filled cavities (see image to right) provide a low-resistance internal pathway for the exchange of gases such as oxygen and ethylene between the plant above the water and the submerged tissues. Aerenchyma is also widespread in aquatic and wetland plants which must grow in hypoxic soils.