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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. Part of embry that are seed leaves






2. 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






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






4. The site of sperm deposition during intercourse and is also the passageway through which a baby is expelled during childbirth






5. Produces two intermediate daughter cells with N chromosomes with sister chromatids






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






7. 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






8. Sporophyte generation is the dominant - familiar form






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






10. Cell division that follows karyokinesis






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






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






13. Common passageway for both the reproductive and exretory systems






14. Split to form several bulbs






15. 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






16. 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






17. Specialized organs where gametes are produced






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






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






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






21. 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






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






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






24. Produced when each meiotic division -rapidly degenerate






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






26. Diploid cells of spermatogonia






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






28. Mass of cells formed when the zygote divides






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






30. 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






31. Replication of the nucleus followed by unequal cytokinesis -membrane pinches inward to forma new cell that is smaller in size but genetically identical to the parent cell






32. 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






33. The male organ of the flower and consists of a thin - stalk-like filament






34. 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






35. A means of reproduction






36. 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






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






38. Homologous pairs (tetrads) align at the equatorial plane - and each pair attaches to a separate spindle fiber by its kinetochore






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






40. Nuclear membrane forms around each new nucleus -at this point - each chromosome still consists of sister chromatids joined at the centromere






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






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






43. Located on scrotum -site for testosterone






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






45. Part of embryo that grows and feeds the embryo






46. (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






47. Surrounded by two layers of cells






48. Have one cotyledon






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






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