Pregnancy and Placenta Formation in Humans

Assertion: Holoblastic cleavage with almost equal sized blastomeres is a characteristic of placental animals.

Reason: Eggs of most mammals, including humans, are of centrolecithal type.

What is chorionic villi?

Which of the following is the development observed during the third trimester of pregnancy?

Which of the following is true for the third trimester of pregnancy?

By the end of 37^th week of gestation, the baby is considered a "full-term".

Which ONE of the following statements is CORRECT about placenta?

Which one of the following is temporary endocrine gland

Which of the following hormones is not a secretory product of human placenta?

Which of the following is mesodermal in origin?

Study the following:

Among the above, the correct combinations are:

Identify the part marked as 'D' in the above diagram.

The events observed by the end of second month of pregnancy are

Statement I: Increased levels of glucose and amino acids circulate in the blood of pregnant women.
Statement II: Somatomammotropin secreted by placenta is antagonistic to insulin.

The correct option among the following is

Which among the following are not the derivatives of ectoderm?

Which of the following statement(s) are correct regarding stem cells?
$\mathrm{a}$) Adult stem cells have fewer $\mathrm{DNA}$ than embryonic stem cells.
$\mathrm{b}$) Adult stem cells are often present only in minute quantities.
$\mathrm{c}$) Adult stem cells will die faster than embryonic stem cells.
$\mathrm{d}$) Both adult and embryonic stem cells exhibit totipotency.
$\mathrm{e}$) Adult stem cells found in bone marrow and embryonic stem cells found in blastocyst.

Right and left sides of an embryo become apparent during ___________.