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• Sclerenchyma tissue has cells that have very thick lignified cell walls and are dead at maturity.

• The primary functions of sclerenchyma are support and protection.

• Some sclerenchyma cells are elongated, while other types are cubical or highly branched.

• Elongated sclerenchyma cells are called fibres and provide strength and support to plant parts. Plants fibres have been used extensively by people to make twine, rope and cloth.

•Collenchyma tissues are mainly found under the epidermis in stems in the large veins of leaves.

• The cells are composed of living, elongated cells running parallel to the length of organs that it is found in (up the side of the stem)

• Collenchyma cells have thick cellulose cell walls which are thickened at the corners.

• Intercellular air spaces are absent or very small.

• The cells contain living protoplasm (cytoplasm and nucleus) and they sometimes contain chloroplasts.

•Cells in parenchyma tissue are thin walled and are often block-shaped.

•Parenchyma cells remain alive at maturity and are abundant in roots, stems, leaves and fruit.

•The primary functions of parenchyma tissue are photosynthesis in leaves and storage of food as starch granules.

•You would expect such tissues to have many chloroplasts and/or amyloplasts

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โˆ™ 2011-02-23 16:03:46
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Q: Difference between parenchyma collenchyma and sclerenchya tissues?
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What is the structural difference between parenchyma and collenchyma?

The cell walls of parenchyma cells remain uniformly thin all along. In collenchyma cell walls at the corners get suberized and become thick to provide more regidity and strength to this tissue.

What is the difference between 'collenchyma' and 'chlorenchyma'?

Difference between collenchyma and chlorenchyma

What is difference between collenchyma parenchyma and sclerenchyma?

Parenchymatous cells have thin cell wall, collenchymatous cells are suberized at the corners whereas sclerenchymatous cells are lignified.

What is the difference between parenchyma and collenchyma?

PARENCHYMA: 1) the tissue consists of thin-walled living cells. 2) it is distributed in almost all the parts of the plant body . 3) the living cells of parenchyma assimilate and store food .They also store waste products. 4) It contain dense cytoplasm. 5) Intercellular spaces may or may not be present. COLLENCHYMA: 1)the tissue consists of cells having localized thickening in their cell walls 2)it occurs mostly in the aerial parts of the plants restricted to the other layers 3)collenchyma is the chief mechanical tissue of the young parts of the plant particularly in the young dicotyledonous stems. in parenchyma cells are thin walled having intercellular spaces.and in collenchyma cells are thick walled having the absence of intercellular spaces. 4) It contain cellulose and pectin. 5) Intercellular spaces are totally absent. 6) Collenchyma is present in peripheral regions.

What is the difference between aerenchyma and chlorenchyma?

Chrolenchyma 1) In leaves and tender stems, parenchyma cells may contain chloroplast and in such case a parenchyma is called chlorenchyma. Aerenchyma 1) In aquatic plants, fairly large air cavities are present between the parenchyma cells; such a parenchyma is called aerenchyma.

Function of phloem parenchyma?

The parenchyma cells in between the sieve tubes of the phloem, and functions primarily for food storage.

What are the basic function of parenchyma tissue?

The basic function of the parenchyma tissue is to facilitate the transport of the small molecules between them.

What are differences between collenchyma and sclerenchyma?

collenchyma helps in making food and sclerenchyma gives mechanical support to plant body Edited answer: Collenchyma cells are thick at the corners whereas sclerenchyma cells are lignified all around. Both serve as mechanical tissue.

What is the difference in between xylem and phloem?

The difference between xylem and phloem is functional as well as structural. 1. xylem is used for conduction of water and minerals whereas phloem is used for conduction of prepared organic food material. 2. Xylem consists of trachieds, vessels (only in angiosperms) and xylem parenchyma, whereas phloem consists of sieve tubes, companion cells (only in angiosperms) and phloem parenchyma.

How can you differentiate between parenchyma and chlorenchyma?

Parenchyma is the primary tissue of higher plants. Its cells are thin-walled and are capable of cell division, even when mature. Chlorenchyma is a type of parenchyma that contains chloroplasts, It is found in leaves, where photosynthesis occurs..

What is the diffference between xylem and phloem?

Xylem contains Vessels, trachieds and xylem parenchyma Phloem consists of sieve tubes, companion cells and phloem parenchyma

What is the purpose of the cortex and pith?

The pith, whose parenchyma cells like those of the cortex, function in food storage.PithThe pith occupies the large central part of the stem. It consists of thin-walled parenchyma cells with intercellular air spaces. Between each vascular bundle is a band of parenchyma, the medullary rays, continuous with the cortex and the pith.The cells of the pith store water and starch.They allow for the exchange of gases through the intercellular air spaces.The medullary rays transport substances from the xylem and phloem to the inner and outer parts of the stem.CortexThis region comprises the collenchyma, parenchyma and endodermis. It is situated to the inside of the epidermis.CollenchymaThese cells lie under the epidermis and constitute three to four layers of cells with cell walls thickened at the corners. The collenchyma cells contains chloroplastsFunctions of the CollenchymaThis tissue serves to strengthen the young stem.The chloroplasts are responsible for the synthesis of organic food during photosynthesis.ParenchymaBeneath the collenchyma cells are a few layers of thin-walled cells, parenchyma, with intercellular spaces. The parenchyma cells make up the bulk of the cortex.Functions of the ParenchymaThe synthesized organic food (mainly starch) is stored here.The intercellular air spaces are responsible for gaseous exchange.Endodermis or Starch SheathThe endodermis or starch sheath forms the innermost layerof the cortex. This is a single layer of tightly-packed rectangular cells bordering the stele of the stem.Functions of the EndodermisThe cells of this tissue store starch.It allows solutions to pass from the vascular bundles to the cortex.

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