I'm pretty sure it's D, because I had something like this last week. but I'm sorry if it's wrong..
Answer:
carbon dioxide and water
Explanation:
carbon dioxide and water are the raw materials needed to start the reaction. They are on the left side of the equation so that is how you know.
Spermatogenesis produces<span> four </span>gametes<span>, while </span>oogenesis produces one with two to three polar bodies left over. because oocytes contain not only genetic material but also mitochondria.
Answer:
zygote, fertilization
(haploid) spores, meiosis
a pollen tube
Active transport refers to a substance moving from areas in which it has low concentration to an area with high concentration, one example i guess is endocytosis, "<span>the taking in of matter by a living cell by invagination of its membrane to form a vacuole"</span>