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
C.
Vasculature without cambium
The characteristic feature of monocot root is presence of vasculature without cambium. The vascular bundles are alternate and radial and arranged in the form of a ring around a central pith. Phloem and xylem bundles are separated by narrow strips called conjunctive tissue and it does not take part in cambium formation. So, the vascular bundles in monocots are closed and do not show any secondary growth.
Which one of the following is not an inclusion body found in prokaryotes?
Phosphate granule
Cyanophycean granule
Glycogen granule
Glycogen granule
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