During the fourth and sixth cleavage of the z | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) In sea urchin development,the cleavage pattern is radial. During the fourth cleavage,the animal hemisphere cells divide meridionally to form eight

Vedclass · Accepted Answer

Mesomeres give rise to ectoderm

Vedclass · Answer

(C) In sea urchin development,the cleavage pattern is radial. During the fourth cleavage,the animal hemisphere cells divide meridionally to form eight cells called mesomeres. The vegetal hemisphere cells divide equatorially to form four macromeres and four micromeres. Mesomeres are destined to form the ectoderm of the embryo. Macromeres contribute to the endoderm and mesoderm,while micromeres give rise to the primary mesenchyme (mesoderm).

Hormone	Site of production
$A$. $hCG$ and $hPL$	$(ii)$ Placenta
$B$. Progesterone	$(iii)$ Corpus luteum
$C$. Androgens	$(iv)$ Leydig cells
$D$. Relaxin	$(i)$ Ovary

During the fourth and sixth cleavage of the zygote in sea urchin development,what is the fate of the resulting cells?

Similar Questions

High increase in $oxytocin$ level in a pregnant lady results in:

The blastopore is found in which of the following developmental stages?

Match the hormone with its site of production:
Hormone Site of production
$A$. $hCG$ and $hPL$ $(ii)$ Placenta
$B$. Progesterone $(iii)$ Corpus luteum
$C$. Androgens $(iv)$ Leydig cells
$D$. Relaxin $(i)$ Ovary

Which of the following structures develops from the ectoderm?

If after ovulation no pregnancy results,the corpus luteum

Vedclass Test Series

Exam Paper Generator

Online Exam Module