Which one of the following human organs is often called the “graveyard” of RBCs?
Gall bladder
kidney
Spleen
Spleen
Vascular bundles in monocotyledons are considered closed because
a bundle sheath surrounds each bundle
cambium is absent
there are no vessels with perforations
there are no vessels with perforations
A major characteristic of the monocot root is the presence of
Open vascular bundles
Scattered vascular bundles
Vasculature without cambium
Vasculature without cambium
Which one of the following is not an inclusion body found in prokaryotes?
Phosphate granule
Cyanophycean granule
Glycogen granule
Glycogen granule
D.
Glycogen granule
Polysome is not an inclusion body found in prokaryotes. Polysomes (polyribosomes or ergosomes) are cluster of ribosomes bound to mRNA molecule are helpful in translation.
Inclusions are dense aggregates of specific chemical compounds in the cell. In prokaryotic cells, phosphate granules accumulates in granules containing long chains of phosphate, which possibly reserve high energy in form of phosphate. Glycogen granules accumulate reserve carbon and energy source and cyanophycean granule is reserve of nitrogen.
Transpiration and root pressure cause water to rise in plant by?
pulling it upward
pulling and pushing it, respectively
pulling it upward
pulling it upward
Minerals known to be required in large amounts for plant growth include
phosphorus, potassium, sulphur, calcium
calcium, magnesium, manganese, copper
potassium, phosphorus, selenium, boron
potassium, phosphorus, selenium, boron