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Answer 1

Answer:

1)phloem

2) simple tissue is homogeneous and complex tissue is heterogeneous.

for example of simple tissue parenchyma, collenchyma,sclerenchym and four example of complex tissue xylem, phloem

3)mirstematic has number of defining features including small cells ,thin cells walls, large cell nuclei , absent or small vacuoles and no intercooler spaces

4) permanent tissue gives fix ability to the plant.

Answer 2

1

1) Phloem cells conduct food from leaves to rest of the plant. They are alive at maturity and tend to stain green (with the stain fast green). Phloem cells are usually located outside the xylem. The two most common cells in the phloem are the companion cells and sieve cells.

2) IF the tissues are composed of cells which are functionally and structurally similar, then they are called SIMPLE TISSUES. IF the tissues are composed of more than one type of cell, and they work together as a unit, performing many functions, then they are called COMPLEX TISSUES.

3 ) Meristematic tissue has a number of defining features, including small cells, thin cell walls, large cell nuclei, absent or small vacuoles, and no intercellular spaces. The apical meristem (the growing tip) functions to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.

4 ) Collenchyma cells in vascular plants support growing parts due to flexible cellulosic walls, which lignify once growth has ceased.

5 ) Top Banner

Differentiate between parenchyma, colenchyma and sclerenchyma

Parenchyma:

These are the cells found in soft part of plants such as leaves,fruits

These cells are not the specialised cells

These cell consists of thin cell wall

The cell wall is made up of cellulose

These consists of living cell at maturity

Collenchyma:

These cells

These cells are found in petiole, leaves and young stems

These cells are specialised cell

These cell consists of unequally thin cell wall

The cell wall is made up of pectin and cellulose

These consists of living cell at maturity

Sclerenchyma:

These cells are found in mature parts of the plant like herbaceous perennials and woody plants

These cells are specialised cells

The cell wall consists of a thick and rigid cell wall

The cell wall is made up of waterproofing lignin

These cells consists of dead cells at maturity

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