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






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






3. Secretes estrogen and progesterone






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






5. Very similar to mitosis - except that meiosis II is not preceded by chromosomal replication -chromosomes align at the equator - separate and move to opposite poles - and are surrounded by a reformed nuclear membrane -new cells have the haploid number






6. Regrowth of a lost or injured body part






7. Sporophyte generation is the dominant - familiar form






8. Occurs in vertebrates that reproduce in water (fish and amphibians) -female lays eggs in water and male deposits sperm in the vicinity -lack of direct passage of sperm from male to female reduces chances of fertilization considerably






9. Have both functional male and female gonads






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






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






12. Bulbs - tubers - runners - rhizomes






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






14. Muscular chamber which is the site of fetal development






15. Part of embryo that grows and feeds the embryo






16. Common passageway for both the reproductive and exretory systems






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






18. Releases spores form the undersides of its leaves that develop into small heart-shaped gametophytes






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






20. Centriole pairs are now at opposite poles of the cell






21. AKA ovanan or fallopian tube -opens into the upper end of the uterus






22. Located on scrotum -site for testosterone






23. 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 -






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






25. Chromatin condenses into chromosomes - the spindle apparatus forms - and the nucleoli and nuclear membrane disappear






26. Some species of plants have flowers that contain only stamens and other flowers that contain only pistils






27. Formed due to cortical reaction -hard layer that surrounds the ovum cell membrane and prevents multiple fertilizations -Followed by the fusion of sperm nucleus and form a diploid zygote






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






29. Undergoes disjunction






30. Released from the ovary into the abdominal cavity and drawn into the nearby oviduct






31. Simple form of asexual reproduction seen in prokaryotic organisms -DNA replicates and a new plasma membrane and cell wall grow inward along the midline of the cell - dividing it into two equally size cells with equal maounts of cytoplasm - each conta






32. Diploid cells of spermatogonia






33. Comlex process involving the formation and fertilization of gametes and regulation of these processes by bot parents






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






35. (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






36. Sperm production -occurs in the seminiferous tubules






37. Produces monoploid spores that develop into pollen grains






38. 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






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






40. Eggs






41. Begins with the cessation of the menstrual flow from the previous cycle -FSH (Follicle Stimulating Hormone) from the anterior pituitary promotes the development of the follicle - which grows and begins secreting estrogen






42. Specialized sex cells






43. The production of female gametes - occurs in the ovaries






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






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






46. External pouch that maintains the testes' temperature at 2C-4C lower than body tmperature - a condition essential for sperm survival






47. Surrounded by two layers of cells






48. Consists almost entirely of the nucleus - which contains the paternal genome






49. Cut piece of stem can develop new roots in water or moist gorund - which can be used to accelerate root formation -layering: stems of certain plants - will take root when bent to the gorund and covered with soil -stem of one plant (scion) can be atta






50. Produced when each meiotic division -rapidly degenerate







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