Biology, 30.08.2019 18:10 costel8532

The luteal phase
a. is where the body prepares for pregnancy
b. is when the egg reaches maturation and is ovulated
c. ends with the rise of estrogen levels
d. b and c
e. a, b and c

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Answer from: id0617045

a. where the body prepares for pregnancy

Explanation:

Menstrual cycle has 4 phases:

a. Menstrual phase: Menstrual flow occurs during this phase i.e the uterine endometrium sheds or breaks down. It occurs for around 4-5 days in human females.

b. Follicular phase: Follicular growth occurs in the ovaries, i.e. primary follicle develops into secondary and then tertiary and then finally into mature graffian follicle. Follicular growth is stimulated by FSH hormone. Estrogen level rise during this period and cause the LH surge. Estrogen also repairs the endometrium in uterus.

c. Ovulatory phase: LH surge causes the ovulation i.e. the mature graffian follicle ruptures and secondary oocyte is released.

d. Luteal phase: The remnants of graffian follicle forms the corpus luteum, which is also called yellow body due to yellow lutein pigment. Progesterone hormone is produced by the corpus leuteum along with small amounts of estrogen. Progesterone produced during luteal phase in ovaries maintains the endometrium in uterus for pregnancy.

Answer from: Quest

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients: open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures: the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

Answer from: Quest

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

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The luteal phase
a. is where the body prepares for pregnancy
b. is when the egg reaches...

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