NEET 2012
- Exam
- NEET
- Year
- 2012
- Subject
- Botany
- Chapter
- Anatomy of Flowering Plants
NEET 2012 · Botany · Anatomy of Flowering Plants
Read the following four statements. I. Both, photophosphorylation...
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?
Options
- ATwo
- BThree
- CFour
- DOne
Correct answer
A. Two
Step-by-step solution
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.