Drugs that affect the central nervous system causing mental or behavioral changes are called:

Psychoactive Drugs.

Explanation: A psychoactive drug can be defined as the chemical substance that that acts primarily on the central nervous system of the brain.

It also alters the various functions of the brain which changes the mood, perception, consciousness and behavior of the person temporarily.

Example: coffee, alcohol, cannabis, and other medication.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.