Symbiotic nitrogen fixing bacteria and Cyanobacteria are found in association to plant. The most common symbiotic bacteria is Rhizobium. In dicot stem, the cambium present between xylem and phloem in vascular bundles is called fascicular or intrafascicular cambium. Besides this some cells of medullary rays also become meristematic and called interfascicular cambium.
Read the following four statements. I. Both, photophosphorylation and oxidative phosphorylation involve up hill transport of protons across the…
NEET UG 2012 — Botany Anatomy of Flowering Plants
2012mcqmedium
Read the following four statements. I. Both, photophosphorylation and oxidative phosphorylation involve up hill 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 occur in free living state also in soil. How many of the above statements are right?
Official previous-year question
Held on 30 Apr 2012 · Verified 9 Jul 2026.
Options
- A
Two
- B
Three
- C
Four
- D
One
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