BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Answer and Explanation: The correct answer is (b) One species uses another species as food or shelter causing harm. (b) One species uses another species as food or shelter causing harm. Parasitism or parasitic creation is a type of relationship where one organism depends on another organism for food and shelter.

Detailed explanation-2: -Since both organisms are benefitting in a mutualistic relationship, the symbol +/+ denotes mutualism.

Detailed explanation-3: -Parasitism is an association between two different species where the symbiont benefits and the host is harmed. Fleas, ticks, lice, leeches, and any bacteria or viruses that cause disease are considered to be parasitic.

Detailed explanation-4: -Next to the name of each type of symbiosis are symbols indicating whether the organisms benefit, are harmed, or aren’t affected by the relationship. The symbol for commensalism is (+/0) which means one organism benefits and the other isn’t affected.