Question

Differentiate between aerenchya and chlorenchyma. Which group of tissue do they belong?

Answer 1

I believe it is aerenchyma and chlorenchyma.

Aerenchyma- A spongy or soft plant tissue with large air spaces found between the cells of the stems and leaves of many aquatic plants, which allows exchange of gases between the shoot and the root. Aerenchyma also provides buoyancy, so the plants can easily float on the water.

Chlorenchyma: In some cases the parenchyma cells contain chloroplasts and are called as chlorenchyma. These cells are meant for photosynthesis.

Further going,

Chlorenchyma and aerenchyma are types of parrenchyma. thats the similarity.
coming to difference..
1. when parrenchyma stores air it is called aerenchyma and similarly, called chlorenchyma when it stores chlorophyll.
2. aerenchyma is found in hydrophytes (plants living in water) like lotus, water hyacinth etc.
chlorenchyma is found in all green plants.
3. chlorenchyma has its own DNA but aerenchyma does not.
4) Aerenchyma seen mainly in aquatic plants, chlorenchyma is seen in most photosynthetic plants.

Now, second part : which group they belong:

Both aerenchyma and chlorenchyma belong to permanent simple tissue called parenchyma .