Which of the following statements are INCORRECT with respect to phytochrome?
i. Phytochrome is light receiving proteinaceous pigment present in leaves of plants.
ii. Phytochrome pigment exists in two forms.
iii. Two forms of phytochromes are interconvertible.
iv. Phytochromes are located in chloroplast of green cells.
v. Phytochrome \(P_r\),form inhibits flowering in LDP during dark period.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.