सर्वात योग्य पर्याय निवडा.
बहुतेक सर्व वनस्पती उती संवर्धन ह्या प्रकाश संश्लेषणासाठी असतात.
(1) सक्रिय
(2) निष्क्रिय
(3) अक्षम
(4) नियंत्रित

The correct answer is Option C (incompetent).

Key Points:
• Physiology of Plant Tissue Culture: In in-vitro micropropagation and plant tissue culture (PTC), cells, calli, and shoot cultures grow under heterotrophic or mixotrophic conditions.
• Photosynthetic Incompetence: Because standard culture media (such as Murashige and Skoog / MS medium) are heavily supplemented with exogenous carbon and energy sources (predominantly 2-3% sucrose), the cultured cells have underdeveloped chloroplasts, suppressed RuBisCO enzyme activity, and non-functional photosynthetic apparatus, rendering them photosynthetically incompetent.
• Transition Phase: Cultured plantlets only develop functional photosynthetic competence during the subsequent acclimatization and hardening phases before being transferred to soil.
• Official Key: The official MPSC revised final key establishes Option (3) ('incompetent' / अक्षम) as the correct answer.
• Key Takeaway: Plant tissue cultures are photosynthetically incompetent in-vitro due to reliance on exogenous sucrose in the nutrient media.