Human Reproduction

fertilization in humans is practically feasible only if

• the ovum and sperms are transported simultaneously to ampullary isthemic junction of the fallopian tube

• the ovum and sperms are transported simultaneously to ampullary isthmic junction of the cervix

• the sperms are transported into cervix within 48 hrs of release of ovum in uterus

• the sperms are transported into vagina just after the release of ovum in fallopian tube

several hormones like hCG, hPL, oestrogen and progesterone are produced by

• ovary

• placenta

• fallopian tube

• pitutary

ectopic pregnancies are referred to as

• pregnancies with genetic abnormality

• implantation of embryo at site other than uterus

• implantation of defective embryo in the uterus

• pregnancies terminated due to the hormonal imbalance

in human females, meiosis-II is not completed until

• puberty

• fertilization

• implantation

• cleavage

which one of the following is not the function of placenta

• facilitates supply of oxygen and nutrients to embryo

• secretes oestrogen

• facilitates removal of carbon dioxide and waste material from embryo

• secretes oxytocin during parturition

menstrual flow occurs due to lack of

• progesterone

• follicle stimulating hormone

• oxytocin

• vasopressin

signals for parturition originate from

• fully developed foetus

• placenta

• oxytocin released from maternal pituitary

• both placenta as well as fully developed foetus

the first movement of the foetus and appearance of hair on its head are usually observed during -

• first trimester of pregnancy

• first month of the pregnancy

• fifth month of the pregnancy

• third month of the pregnancy

Tags

NGSS.HS-LS1-4

which one of the following statement about morula in humans is correct

• it has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA

• it has far less cytoplasm as well as less DNA than in an uncleaved zygote

• it has more or less equal quantity of cytoplasm and DNA

• it has more cytoplasm and more DNA than an uncleaved zygote

Tags

NGSS.HS-LS1-4

the part of fallopian tube closest to the ovary is

• isthmus

• infundibulum

• fimbrae

• ampulla