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2.Human Reproduction
medium
$A$ : If fertilization occurs, the corpus luteum is rescued from regression by human chorionic gonadotropin, which is produced by placenta.
$R$ : In first trimester the corpus luteum stimulates by $hCG$ is responsible for the production of progesterone.
A
Assertion and Reason both are correct and also correct explantion.
B
Assertion and Reason both are correct but not explanation of assertion.
C
Assertion is correct, but Reason is incorrect.
D
Both Assertion and Reason are incorrect.
Solution
$hCG$ stimulates corpus luteum to secrete progesterone and estrogen for longer time. After first trimester, placenta secretes sufficient progesterone
Standard 12
Biology
Similar Questions
Match the columns
| Column $I$ | Column $II$ |
| $(a)$ Third week | $(1)$ Development of pre umbilical code |
| $(b)$ Third month | $(2)$ Body develops but head remains big |
| $(c)$ Fourth week | $(3)$ Embryonic slit widens |
| $(d)$ Fourth month | $(4)$ Muscles activate |
easy
