Kranz anatomy is one of the characteristics of the leaves of
potato
wheat
sugarcane
sugarcane
C.
sugarcane
Sugarcane is a C4-plan. C4-plants are characterised by the presence of Kranz-type of anatomy. In this, the leaf mesophyll is undifferentiated and its cells (having a normal type of granola chloroplasts) occur in concentric layers around vascular bundles, later is surrounded by large-sized bundle sheath cells (having large -sized agranal chloroplasts) which are arranged in a wreath like manner.
Read the following four statements, A, B,C and D select the right option having both correct statements.
A) Z scheme of light reaction takes place in presence of PS- I only.
B) Only PS-I is functional in cyclic photophosphorylation.
C) Cyclic photophosphorylation results into synthesis of ATP and NADPH2
D) Stroma lamellae lack PS-II as well as NADP.
B and D
A and B
B and C
B and C
Read the following four statements:
I. Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.
II. In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth.
III. Stamens in flowers of Gloriosa and Petunia are polyandrous.
IV. Symbiotic nitrogen fixers occurs in free-living state also in soil.
How many of the above statements are right
Two
Three
Four
Four
PGA as the first CO2 fixation product was discovered in photosynthesis of
bryophyte
gymnosperm
angiosperm
angiosperm
C4 plants are more efficient in photosynthesis than C3 plants due to
higher leaf area
the presence of a larger number of chloroplasts
the presence of thin cuticle
the presence of thin cuticle
Which one of the following is essential for photolysis of water
Manganese
Zinc
Copper
Copper
In Kranz anatomy, the bundle sheath cells have
thin walls, many intercellular spaces and no chloroplasts
thick walls, no intercellular spaces and a large number of chloroplasts
thin walls, no intercellular spaces and several chloroplasts
thin walls, no intercellular spaces and several chloroplasts
