Read the following four statements (A-D).

Options

(a) Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane
(b) In dicot stems, a new cambium originates from cellls of pericycle at the time of secondary growth
(c) Stamens in flowers of Gloriosa and Petunia are polyandrous
(d) Symbiotic nitrogen-fixers occur in free-living state also in soil

Correct Answer:

Stamens in flowers of Gloriosa and Petunia are polyandrous

Explanation:

All the four statements are correct.