20% of the Earths crust is made up of non-silicate minerals
Answer:
Option-D
Explanation:
Casparian strips are the strips or band composed of a hydrophobic substance called the suberin which forms the ring-like structure in the endodermis of the vascular plants.
The Casparian strips are present around the vascular bundles in the endodermis to allow the uptake of the selective nutrients as the substance has to pass through the cell membrane before it enters the centre of the root or stele or vascular bundles.
The Casparian strips allow the movement of a substance through symplast mode only, therefore, is ensures the substance to pass through the cell membrane.
Thus, Option-D is correct.
Answer:
d
Explanation:
reservoirs are places were water are held for a lond period of time. Do a lake or ocean is a place where water is held for a long period of time.
Skin-block skin boundaries
muscle-give support
bone-protect and harden
joing-by ligaments, joints, tendons
