26. Which of the following statement about human reproduction is true?
a. mitosis in males is also known as spermatogenesis
b. sperm and ova are zygotes
c. oogenesis takes place in the ovaries of females
d. meiosis is for growth and repair
27. Which of the following statement is true about meiosis in humans?
a. sperm and ova are not identical to the parent cells that produced them.
b. females produce far more gametes than do males
c. the process begins in males and females at puberty
d. none of the above
28. Which of the following statements is true in humans?
a mitosis produces cells that have a haploid number of chromosomes.
b. meiosis produces cells that have a diploid number of chromosomes.
c. meiosis produces cells that have a haploid number of chromosomes.
d. all of the above
29. Human gametes normally have chromosomes?
a. 23
b. 46
c. 22
d. 47
30. Sexual reproduction requires more energy and resource, what's the advantage then?
a it increases genetic diversity
b. it can help prevent diseases epidemics
c. it can help us cope with environmental changes
d. all of the above

26. Ova are produced in the ovaries. At ovulation, a secondary oöcyte passes down one of the fallopian tubes to the uterus where a fetus can develop normally if fertilization has occurred (in the fallopian tube) and meiosis completed.

27. Sperm and ova are very different from the parent cells that produced them. Most notably, they only have half the number of chromosomes. There are anatomical differences as well, such as the flagellum (or tail) on a sperm cell.

28. Reducing by half the number of chromosomes in the production of gametes is nature`s way of assuring that each succeeding generation of a species is very similar to previous ones since the diploid number is achieved again through conception.

29. Sperm and ova both have 1/2 the number of chromosomes of somatic cells as a result of the reduction division process in meiosis. Since human somatic cells have 46 chromosomes, our gametes normally have 23.

30. Sexual reproduction leads to genetic variation in new generations of offspring. This is fundamental to evolution. Due to the two gametes joining, the plant is adaptable. Because there is genetic variation each and every plant is unique. So if a disease spreads out some will die and some will survive so the population would sustain.For plants it allows seeds to be dispersed over large areas to give the species a chance to colonize new habitats.