Question

Question 29

1. At the time of ovulation, a ________.

   a.

   mature egg is released from the ovary

   b.

   primary follicle is released from the ovary

   c.

   secondary oocyte is released from the ovary

   d.

   corpus luteum is released from the ovary

Question 31

1. At higher elevations, as in the mountains, there is less oxygen content in the air. How would the body respond to this?

   a.

   the aortic bodies signal the breathing center to increase breathing rate

   b.

   the breathing center in the brain would increase the breathing rate

   c.

   carotid bodies in the lungs would signal the brain to decrease breathing rate

   d.

   there is no mechanism for the body to respond to this phenomenon

Question 32

1. Because of the birthing process and sexual intercourse, it is critical that the va gina is able to ________.

   a.

   expand

   b.

   contract

   c.

   relax

   d.

   stiffen

Question 34

1. The placenta is composed of maternal and fetal tissue with the fetal tissue developing chorionic villi to better exchange nutrients with the mother.

   a.

   TRUE

   b.

   FALSE

Question 36

1. Which of the following structure or processes involved in sexual reproduction is an adaptation to a terrestrial life?

   a.

   pen is for delivering sperm

   b.

   external fertilization

   c.

   shelled eggs containing embryos

   d.

   both a pen is for delivering sperm and shelled eggs containing embryos

Answer 1

29Ans )A

Mature egg is released from ovary at the time of ovulation.

Ovulation is the release of egg from the ovaries. This event occurs when the ovarian follicle rupture and release the secondary oocyte ovarian cells.

Secondary oocyte develops into ovum by undergoing meiosis 2.

31 Ans)A

Aortic bodies signal the breathing centers to increase breathing rate.

. Aortic body are cluster of chemoreceptors located along the aortic arch.

It measures changes in blood pressure and the composition of arterial blood flowing past it, including the partial pressure of oxygen and carbon dioxide.

It gives feedback to the medulla oblongata specifically to the dorsal respiratory group via the afferent branches of the vagus nerve. The medulla inturn regulate breathing and blood pressure.

32 Ans)D

Female sex organ will not stiffen because of birthing process or sexual intercourse.

34 Ans) True.

The placenta is composed of both maternal tissue and tissue derived from the embryo.

The chorion is the embryonic derived portion of the placenta.It is composed of fetal blood vessels and trophoblasts which are organized into finger-like structures called chorionic villi.

36Ans)C

Shelled eggs containing embryo is an adaptation.