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PCAT Biology Reproduction
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PCAT Biology Reproduction
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25 Questions

1. Method of growth - development - and replacement of worn-out cells

2. Diploid cells that undergo meiosis to produce four haploid sperm of equal size

3. Undergoes disjunction

4. Differs from asexual reproduction in that there are two parents involved and the end result is a geneticaly unique offspring -fusion of two gametes

5. Produced when one diploid primary female sex cell undergoes meiosis in the ovaries

6. (In Prophase I) chromatids of homologous chromosomes break at corresponding points and exchange equivalent pieces of DNA -occurs between homologous chromosomes and not between sister chromatids of the same chromosomes (the latter are identical - so c

7. Hormonal secretions of the ovaries - the hypothalamus - and the anterior pituitary play important roles in the female reproductive cycle -divided into the follicular phase - ovulation - the luteal phase - and menstruation

8. Result when a single zygote splits into two embryos

9. AKA lateral meristem -located between the xylem and phloem

10. Common passageway for both the reproductive and exretory systems

11. Two haploid cells yielded from meiotic division of primary spermatocytes

12. Male gonads - produce sperm in the tightly coiled seminiferous tubules

13. Immature ova -all that a female will produce during her lifetime are already in her ovaries at birth

14. Specialized cells with hard coverings that prevent loss of water

15. The process by which a cell doubles its organelles and cytoplasm - replicates its DNA - and then divides into two

16. After ovulation - LH induces the ruptured follicle to develop into the corpus luteum

17. Muscular chamber which is the site of fetal development

18. (In Prophase I) process where homologous chromosomes (chromosomes that code for the same traits - one inherited form each parent) come together and intertwine

19. Central region where - after replication - the chromosomes consist of two identical sister chromatids held together in interphase

20. 1) G1: Initiates interphase. is described as the active growth phase and can vary in length. the cell increases in size and synthesizes proteins. the length of the G1 phase determines the length of the entire cell cycle 2) S: the period of DNA synthe

21. Cell undergoes a period of growth and replication of genetic material before the initiation of mitosis -cell spends at least 90% of life in interphase -each chromosome is replicated so that during division - a complete copy of the genome can be distr

22. Can be fertilized during the 12-24hr after ovulation -occurs in the lateral - widest portion of the fallopian tube -sperm must travel through the vaginal canal - cervix - uterus - and into the fallopian tubes to reach the ovum

23. Inner layer of oocyte cell membrane

24. Four haploid cells produced from the second meiotic division after secondary spermatocytes

25. Union of gametes