1. | Spermatogonia have 46 chromosomes and always undergo meiotic cell division. |
2. | Primary spermatocytes divide by mitotic cell division. |
3. | Secondary spermatocytes have 23 chromosomes and always undergo second meiotic cell division. |
4. | Spermatozoa are transformed into spermatids. |
Which among the following has 23 chromosomes?
1. Spermatogonia
2. Zygote
3. Secondary oocyte
4. Oogonia
Which of the following hormones is not secreted by human placenta?
1. hCG
2. Estrogens
3. Progesterone
4. LH
The vas deferens receives duct from the seminal vesicle and opens into urethra as
1. epididymis
2. ejaculatory duct
3. efferent ductule
4. ureter
Urethral meatus refers to the
1. urinogenital duct
2. opening of vas deferens into urethra
3. external opening of the urinogenital duct
4. muscles surrounding the urinogenital duct
Morula is a developmental stage
1. between the zygote and blastocyst
2. between the blastocyst and gastrula
3. after the implantation
4. between implantation and parturition
The membranous cover of the ovum at ovulation is
1. corona radiata
2. zona radiata
3. zona pellucida
4. chorion
Identify the odd one from the following:
1. labia minora
2. fimbriae
3. infundibulum
4. isthmus
Choose the incorrect statement from the following:
1. | In birds and mammals, internal fertilisation takes place. |
2. | Colostrum contains antibodies and nutrients. |
3. | Polyspermy is prevented by the chemical changes in the egg surface. |
4. | In the human female, implantation occurs almost seven days after fertilisation. |
Identify the wrong statement from the following:
1. | High levels of estrogen trigger the ovulatory surge. |
2. | Oogonial cells start to proliferate and give rise to functional ova in regular cycles from puberty onwards, |
3. | Sperms released from seminiferous tubules are poorly motile/ non-motile. |
4. | Progesterone level is high during the post ovulatory phase of menstrual cycle. |