Organisms And Populations

Answer (b) Sciophytes

1. A represents the response of regulators. The internal levels of body are maintained constantly in spite of changing external levels. 2. The response B is of conformers. The internal body levels change accordingly with the external levels. 3. The responses C is of partial regulators. They are only capable of maintaining internal levels up to a certain limit. So, the correct option is, 'A-Regulator B- Conformer C-Partial regulator'.