Question 18 Ovoviviparous egg development O all of the above O requires copulation to get sperm and egg together keeps embryo safe inside mom depends on yolk for embryonic growth avoids putting a shell or using a placenta

differentiate the frog and mammalian spermatogenesis. Spermatogenesis Frog Mammal 1.     2.     3.     4.

In this picture which letter represents the chorion? Embryo Mother's blood vessels O A OB OD O E

QUESTION 1 Match the reproductive organ to its function (job). veggs are made here A. prostate gland where the embryo implants to grow a placenta near the many blood vessels B. cervix v stores sperm C. vagina Vadds sugar to semen to power sperms' movement D. uterus v squeezes to hold baby in until birth E. vas deferens v makes sperm F. ovaries contracts to move sperm through male reproductive tract G. epididymis v where fetus develops and contracts to birth baby H. seminiferous tubules v adds a basic/alkaline solution to semen to neutralize acidic vagina I. endometrium v passageway for penis during sexual intercourse, menstrual flow out of body and birth of baby J. seminal vesicles

Question 43 OVARIAN CYCLE. Ovulation typically occurs on day O 5 O 21 O 28

What occurs as a result of the joining of sperm and ova? O gametes O meiosis O mitosis Q 14 of 15 O zygotes

Question 4 Put the following events of neurulation in order, from first to last. Notochord signals ectoderm layer at top of v[Choose] embryo to form a neural plate Cells in the neural plate change shape, causing the neural plate to bend and form the neural groove. 4 3 The two sides of the neural plate come [ Choose ] together, forming a neural crest The neural tube pinches off by coming [Choose ) unglued from the neural crest The neural tube becomes the spinal cord and brain in the body and head, respecțively. [ Choose )

What are sex cells called (choose all correct answers)? O germ cell O gametes O eggs O sperm somatic cells

A ball of cells that inside is full of cells is called? fetus blastula gastrula morula embryo

QUESTION 4 Which of the following is the best description of how pregnancy most often occurs? Sperm enter the body through the urethra, then travel to the uterus where fertilization occurs O Sperm enter the body through the urethra, then travel to the Fallopian tubes where fertilization occurs Sperm enter the body through the urethra, then travel to the ovaries where fertilization occurs Sperm enter the body through the vagina, then travel to the uterus where fertilization occurs Sperm enter the body through the vagina, then travel to the Fallopian tubes where fertilization occurs Sperm enter the body through the vagina, then travel to the ovaries where fertilization occurs O O O 0 O O