Sexual reproduction is when 2 organisms reproduce by internal fertilization or external fertilization with mating. Internal fertilization is when the sperm attaches to the egg inside the female, and external is when the male fertilizes the eggs that are laid or outside the females body. Pollination can be sexual and asexual, and is when pollen is transferred to fertilize another plant.
Asexual reproduction is when only one organism is needed to reproduce, some examples are spores and bacteria.
The pros and cons of Asexual reproduction compared to Sexual reproduction are that in sexual reproduction it requires energy to find a mate but in Asexual it doesn’t. A pro of sexual reproduction is that you are less susceptible to diseases since you aren’t an exact copy or the parents, which is a con in Asexual because they can get wiped out by a disease, but in Asexual you can reproduce really quickly so the population grows quickly.
Mitosis and Meiosis are when cells multiply by PMAT, but Meiosis happens to the cell twice resulting in 4 cells. PMAT is Prophase, Metaphase, Anaphase, Telophase. In the Prophase the nucleolus disappears and the chromosomes form into chromatids. In the metaphase the spindle fibers pull the chromatids to the middle of the cell. In the Anaphase the chromatids move to the opposite sides of the cell. In the Telophase the nuclear membrane forms around each new cell. After Cytokineses happens to separate the 2 cells. Mitosis is cell division and meiosis is another version of cell division that is used for sexual reproduction, used to get genes from the parents.
Organisms grow by cell division increasing the number of cells with the cell cycle and mitosis. When there is enough nutrients, replicated DNA, and undamaged DNA the cell goes through cell division with interphase, mitosis, and cytokinesis.