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PCAT Biology Reproduction

Subjects : pcat, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Common passageway for both the reproductive and exretory systems






2. Sperm production -occurs in the seminiferous tubules






3. Flowering plants consisting of a few cells that exist for a very short time






4. Menstrual flow






5. Eggs






6. Regulates secondary male sex characteristics including facial and pubic hair and voice changes






7. As in mitosis - the parent cell's chromosomes are replicated in the 2N number of sister chromatids






8. 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






9. Meristems provide a source of cells that can develop into an adult plant -can occur naturally or through human intervention -advantagous because it introduces no genetic variation and is a rapid form of reproduction






10. Result when a single zygote splits into two embryos






11. (In Prophase I) each chromosome consists of two sister chromatids - each synaptic pair of homologous chromosomes containing four chromatids






12. Union of gametes






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






14. Undergoes disjunction






15. Found in the abdominal cavity - below the digestive system -consist of thousands of follicles






16. The development of an unfertilized egg into an adult organism






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






18. Part of embryo that develops into the lower and root






19. Plant cells lack centrioles -spindle apparatus is synthesized by mcrotubule organizing centers that are not visible -cytokinesis in animal cells proceeds through production of a cleavage furrow -Plant cells are rigid and can't form cleavage furrows -






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






21. Sporophyte generation is the dominant - familiar form






22. Uncoiled DNA






23. Similar to mitosis in that a cell duplicates its chromosomes before undergoing the process -whereas mitosis preserves the diploid number of the cell - meiosis produces the haploid (1N) number - having the number of chromosomes






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






25. Egg






26. Lower - narrow end of the uterus -connects with the vaginal canal






27. If the ovum isn't fertilized - the corpus luteum atrophies - the resulting drop in progesterone and estrogen levels causes the endometrium (with its superficial blood vessels) to slough off - giving rise to menses






28. Occurs midway through the cycle -a mature ovarian follicle bursts and releases an ovum -caused by a surge in LH (Luteinizing Hormone) that is preceded - and in part caused - by a peak in estrogen levels






29. Stems running above and along the gorund - extending form the main stem -can produce new roots and upright stems






30. Secretes estrogen and progesterone






31. Practiced by terrestrial vertebrates and provides a direct route for sperm to reach the egg cell -increased chance for fertilization success and females produce fewer eggs






32. (In Anaphase I) homologous pairs separate and are pulled to opposite poles of the cell -accounts for a fundamental Mendelian Law -each chromosome of paternal origin separates (or disjoins) from its homologue of maternal origin - and either chromosome






33. Cell division that follows karyokinesis






34. Plants exhibit alternation of generation in which a diploid generation is succeeded by a haploid generation -diploid saprophyte generation produces haploid spores - which develop into the haploid saprophyte generation






35. AKA stolon -woody - underground stems -can develop new upright stems






36. Diploid cells of spermatogonia






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






38. Part of embryo that develops from the outer covering of the ovule






39. Specialized sex cells






40. The embryonic undifferentiated cells that growth in higher plants are restricted to -undergo active cell reproduction






41. Haploid gametophyte gneration produces gametes by mitosis -gametophytes reproduce sexually - whereas the sporophyte gneration reproduces asexually






42. AKA sperm production -occurs in the seminiferous tubules






43. The production of female gametes -occurs in the ovarian follicles






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






45. Gametophyte is the dominant generation -smaller - short lived organism that depends on the gametophyte for energy and nutrients - sporophytes grow on top of the gametophytes and produce spores that develop into gametophytes






46. Union of the egg and sperm nuclei to form a zygote with a diploid number of chromosomes






47. Part of embryo that is the precursor of the upper stem and leaves






48. Undifferentiated tissues in plants






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






50. Passes through the penis and opens to the outside at its tip