Anatomy and Morphology of Plants
__________ is a living mechanical tissue.
Thickening in collenchyma mainly due to deposition of
Collenchyma is simple living tissue with thick non-lignified walls that provide mechanical support and tensile strength to the growing organs and is present in the organ that does not develop very woody. Pectin deposition imparts water retaining capacity and makes it a spongy tissues.
Lignin is hydrophobic and inhibits water absorption from otherwise highly hydrophilic cell walls thereby facilitate water conduction by the plant's vascular tissues efficiently. It also provides mechanical strength to the tissues. It is the main component of sclerenchymatous cell walls, which together with collenchymas makes a major part of mechanical tissues of the plant.
Cellulose is present in thin cell walls of parenchyma. It does not provide mechanical strength or water repelling attributes. Suberin is a waterproofing waxy substance, which restricts the water movement and is present in form of bands or strips that run around the radial and end walls of the endodermal cells and forms casparian strips.
__________ is a living mechanical tissue.
In angular collenchyma, thickenings are present ________
Cells of this tissue are living and show angular wall thickenings. They also provide mechanical support. The tissue is
A plant tissue, when stained, showed the presence of hemicellulose and pectin in cell wall of its cells. The tissue represents
_______ gives flexibility in plants.
Give reasons for Branches of a tree move and bend freely in high wind velocity.
Cells of this tissue are living and show angular wall thickenings. They also provide mechanical support. The tissue is
A plant tissue, when stained, showed the presence of hemicellulose and pectin in cell wall of its cells. The tissue represents
A simple mechanical tissue devoid of lignin is
Mechanical tissue consisting of living cells is