What is symbotic relationships

A symbiotic relationship  is a close relationship between two species in which at least one species benefits, most often both. For the other species, the relationship may be positive, negative, or neutral.

Explanation:

The best way to explain symbiotic relationships is by example. For example, algae, which is an autotroph, and fungus, which is a saprophyte, live together in lichen. Both benefit in this case, also known as mutalism. Mutualism is a type of symbiotic relationships.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.