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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. Diploid cells of spermatogonia






2. 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






3. Production of functional sex cells by adult organisms -fertilization forms a zygote -development of the zygote into another adult - completing the cycle






4. Division and distribution of the cell's DNA to its two daughter cells such that each cell receives a complete copy of the original genome






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






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






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






8. Steroid hormones necessary for normal female maturation -stimulate the development of the female reproductive tract and contribute to the development of secondary sexual characteristics and sex drive -responsible for the thickening of the endometrium






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






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






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






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






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






14. Centromeres split so that each chromatid has its own distinct centromere - thus allowing sister chromatids to separate. The sister chromatids are pulled toward the opposite poles of the cell by the shortening of the spindle fibers. Spindle fibers are






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






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






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






18. 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






19. Union of gametes






20. Secretes estrogen and progesterone






21. 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 -






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






23. Causes the glands of the endometrium to mature and produce secretions that prepare it for the implantation of an embryo -essential for the maintenance of the endometrium






24. Chromosomes condense - and the centriole pairs (in animals) separate and move towards the opposite poles of the cell. the spindle apparatus forms between them - and the nuclear membrane dissolves - allowing the spindle fibers to interact with the chr






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






26. 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






27. 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






28. Produces monoploid spores that develop into pollen grains






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






30. 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






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






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






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






34. Egg






35. Uncoiled DNA






36. Expanding partition that grows outward from the interior of the cell until it reaches the cell membrane






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






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






39. Part of embryo that grows and feeds the embryo






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






41. Sporophyte generation is the dominant - familiar form






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






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






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






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






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






47. Located on scrotum -site for testosterone






48. Split to form several bulbs






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






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






Can you answer 50 questions in 15 minutes?



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