One of the following is not true

Explanation

This question is asking us to identify the statement that is not true among the given options. Option A states that saprophytic nutrition involves feeding on a soluble organic material from inorganic substances, and this is correct. Saprophytic nutrition is a type of nutrition in which an organism feeds on dead and decaying organic matter, releasing enzymes to break down the matter into smaller soluble organic compounds that can be absorbed. Option B states that symbiosis is a nutritional relationship in which both organisms involved derive benefit, and this is also true. Symbiosis is a type of relationship in which two organisms of different species live in close association, and both organisms benefit from the interaction. Option C states that a parasite causes injuries to its host in the course of getting its food, and this is also true. Parasites are organisms that live in or on another organism, known as the host, and obtain their food from the host. In the process, they often cause harm or injury to the host. Option D states that holozoic mode of nutrition can be seen in animals, carnivorous plants, and some protists, and this is also true. Holozoic nutrition is a type of nutrition in which an organism ingests solid food and then digests it internally. This mode of nutrition is seen in animals, carnivorous plants, and some protists. Therefore, the statement that is not true among the given options is Option A, as it is actually a true statement.