CBSE
Multiple Choice QuestionsWhen the cell is fully turgid, its
DPD = OP
DPD = zero
WP = TP
OP = zero
Vascular bundles of roots are
conjoint
concentric
bicollateral
radial
Assertion : Long distance flow of photoassimilates in plants occurs through sieve tubes.
Reason : Mature sieve tubes have parietal cytoplasm and perforated sieve plates.
If both Assertion and Reason are true and the reason is the correct explanation of the assertion
If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
If Assertion is true statement but Reason is false
If both Assertion and Reason are false statements
Ectophloic siphonostele is found in
Osmunda and Equisetum
Marsilea and Botrychium
Adiantum and Cucurbitaceae
Dicksonia and Maiden hair fern
Companion cell in plants are associated with
vessels
sieve elements
sperms
guard cells
Assertion: In angiosperms the conduction of water is more efficient because their xylem has vessels.
Reason: Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Short Answer TypeWhat is the difference between pinocytosis and phagocytosis?
Multiple Choice QuestionsThe plant undergoes wilting when
xylem is blocked
cambium is blocked
phloem is blocked
some roots are reduced in number
Graham's law is correlated with
diffusion
osmoregulation
osmosis
absorption
Lenticular transpiration takes place in
fruits
woody stems
leaves
all of these
