Match the following columns:Column-IColumn-II | vedclass

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(A) The correct matching is as follows:$(1)$ Placenta: It acts as an endocrine tissue and facilitates the supply of oxygen and nutrients to the embryo

Vedclass · Accepted Answer

$1-b, 2-d, 3-a, 4-c$

Vedclass · Answer

(A) The correct matching is as follows:$(1)$ Placenta: It acts as an endocrine tissue and facilitates the supply of oxygen and nutrients to the embryo, thus providing nutrition. Hence, $1-b$.$(2)$ $hPL$ (Human Placental Lactogen): This is a hormone secreted by the placenta during pregnancy to support fetal growth. Hence, $2-d$.$(3)$ Relaxin: This hormone is secreted by the ovary and placenta, which helps in relaxing the pelvic ligaments to facilitate parturition (childbirth). Note: While the option provided in the table for $(a)$ is 'Stimulates uterine contraction', in standard biology, Oxytocin is the primary hormone for contraction, while Relaxin aids in the relaxation of the birth canal. Given the options, $3-a$ is the intended match for the physiological process of parturition.$(4)$ $IgA$: Colostrum, the initial milk produced by the mother, contains abundant $IgA$ antibodies to provide passive immunity to the newborn. Hence, $4-c$.Therefore, the correct sequence is $1-b, 2-d, 3-a, 4-c$.

Column-$I$	Column-$II$
$(1)$ Placenta	$(a)$ Stimulates uterine contraction for parturition
$(2)$ $hPL$	$(b)$ Provides nutrition to the embryo
$(3)$ Relaxin	$(c)$ Antibody in colostrum
$(4)$ $IgA$	$(d)$ Hormone secreted by placenta

Match the following columns:
Column-$I$ Column-$II$
$(1)$ Placenta $(a)$ Stimulates uterine contraction for parturition
$(2)$ $hPL$ $(b)$ Provides nutrition to the embryo
$(3)$ Relaxin $(c)$ Antibody in colostrum
$(4)$ $IgA$ $(d)$ Hormone secreted by placenta

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Match the following columns:Column-$I$Column-$II$$(1)$ Placenta$(a)$ Stimulates uterine contraction for parturition$(2)$ $hPL$$(b)$ Provides nutrition to the embryo$(3)$ Relaxin$(c)$ Antibody in colostrum$(4)$ $IgA$$(d)$ Hormone secreted by placenta