In which group is parthenogenesis a normal event?

1. chickens
2. bees
3. rabbits
4. sea stars

Genetically unique individuals are produced through ________.

1. sexual reproduction
2. parthenogenesis
3. budding
4. fragmentation

External fertilization occurs in which type of environment?

1. aquatic
2. forested
3. savanna
4. steppe

The process of gastrulation forms the _______.

1. blastula
2. zygote
3. organs
4. germ layers

Which of the following gives rise to the skin cells?

1. ectoderm
2. endoderm
3. mesoderm
4. none of the above

Sperm are produced in the ________.

1. scrotum
2. seminal vesicles
3. seminiferous tubules
4. prostate gland

Which organ has an endometrial lining that will support a developing baby?

1. labia minora
2. breast
3. ovaries
4. uterus

Which hormone causes FSH and LH to be released?

1. testosterone
2. estrogen
3. GnRH
4. progesterone

Nutrient and waste requirements for the developing fetus are handled during the first few weeks by ________.

1. the placenta
2. diffusion through the endometrium
3. the chorion
4. the blastocyst

Which hormone is primarily responsible for the contractions during labor?

1. oxytocin
2. estrogen
3. β-HCG
4. progesterone