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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. Contains elongated cell with head - tail - neck - and body






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






3. Located on scrotum -site for testosterone






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






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






6. 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






7. Found in the tips of roots and stems where growth in length occurs






8. Caplike structure - derived from the Golgi apparatus - develops over the anterior half of the head -contains enzymes needed to penetrate the tough outer covering of the ovum






9. Mass of cells formed when the zygote divides






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






11. The process by which gametes are produced -involves two divisions of primary sex cells resulting in four haploid cells called gametes






12. Result when a single zygote splits into two embryos






13. Produced in developing placenta if fertilization occurs - maintaining the corpus luteum and - thus - the supply of estrogen and progesterone that maintains the uterus - until the placenta takes over production of these hormones






14. Fibers of the spindle apparatus attach to each chromatid at the centromere to align the chromosomes at the center of the cell (equator)






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






16. Near the end of telophase - the cytoplasm divides into two daughter cells - each wit a complete nucleus and its own set of organelles -In animal cells - a cleavage furrow forms - and the cell membrane indents along the equator of the cell and finally






17. Have both functional male and female gonads






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






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






20. Common passageway for both the reproductive and exretory systems






21. 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






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






23. Regrowth of a lost or injured body part






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






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






26. Tail of sperm -propels the sperm - whereas mitochondria in the neck and body provide energy the locomotion






27. Uncoiled DNA






28. 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






29. 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






30. Produced after meioisis from spermatids that undergo a series of changes -AKA mature sperm -specialized for transporting the sperm nucleus to the ovum -elongated cell with a head - neck - body - and tail






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






32. A tubelike structure formed by the sperm once in contact with the membrane -extends to the cell membrane and penetrates it - fusing the sperm cell membrane with that of the ovum -Sperm nucleus now enters the ovum's cytoplasm to complete Meiosis II






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






34. (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






35. Bulbs - tubers - runners - rhizomes






36. Spore formation - vegetative propagation - and Artificial Vegetative Propagation






37. Sperm production -occurs in the seminiferous tubules






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






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






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






41. 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






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






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






44. Daughter cells of unequal size produced from one primary oocyte per month completes meiosis I -expelled from the follicle during ovulation






45. Thin and stalk like with a terminal sac called the anther






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






47. Secretes estrogen and progesterone






48. Female gonads that produce oocytes






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






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






Can you answer 50 questions in 15 minutes?



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