The correct statement is 3 only, as plant varieties are not eligible for patent protection under the Indian Patents Act; instead, they are protected under the Protection of Plant Variety and Farmers’ Rights Act, 2001. According to this legislation, farmers and plant breeders can register new plant varieties, which encourages agricultural biodiversity and promotes the rights of local farmers, differentiating it from the broader patent framework that applies to inventions and processes. This is significant in the context of India's commitment to safeguarding traditional agricultural practices while balancing the interests of innovation and biodiversity.