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In aquatic plants, large air cavities are present in parenchyma to help them float. Such a parenchyma type is called

In aquatic plants, large air cavities are present in parenchyma to help them float. Such a parenchyma type is called Correct Answer Aerenchyma

Concept:

  • Tissues in plants are classified into two main groups, namely, meristematic and permanent tissues based on whether the cells being formed are capable of dividing or not.
  • Further Permanent tissues are also categorised into 2 types - Simple tissue & Complex tissue.
  • A simple tissue is made of only one type of cell. The various simple tissues in plants are parenchyma, collenchyma and sclerenchyma.

Key Points

  • Parenchyma is the most common simple permanent tissue.
  • It consists of relatively unspecialised cells with thin cell walls.
  • They are living cells. They are usually loosely arranged, thus large spaces between cells (intercellular spaces) are found in this tissue.
  • This tissue generally stores food.
  • In aquatic plants, large air cavities are present in parenchyma to help them float. Such a parenchyma type is called aerenchyma.

​Additional Information 

Chlorenchyma - 

  • In some situations, the parenchyma contains chlorophyll and performs photosynthesis, and then it is called chlorenchyma.

Sclerenchyma - 

  • Sclerenchyma consists of long, narrow cells with thick and lignified cell walls having a few or numerous pits.
  • They are usually dead and without protoplasts. On the basis of variation in form, structure, origin and development, sclerenchyma may be either fibres or sclereids.

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