Fertilization occurs when the chromosomes of gametes combine.
true false

True

Explanation:

The process of fertilization involves a male gamete and female gamete (haploid gametes) which get fuse together to form a new cell, Zygote (diploid cell).

In humans during fertilization at first zygote formation take place due to the fusion of only one male gamete (sperm) with a female gamete (egg). the zygote allowed to divide and form a blastocyst which get attached to the lining of the mother's uterus. After the blastocyst stage, formation of embryo take place that allows formation of internal organs and at last fetus is formed that allows differentiation of physical structures.

Hence, the given statement is true.

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.