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






2. Bulbs - tubers - runners - rhizomes






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






4. Produced when each meiotic division -rapidly degenerate






5. Result when two ova are released in one ovarian cycle and are fertilized by two different sperm






6. Specialized organs where gametes are produced






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






8. Menstrual flow






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






10. Located on scrotum -site for testosterone






11. Uncoiled DNA






12. 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






13. 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






14. 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






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






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






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






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






20. Eggs






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






22. Part of embry that are seed leaves






23. Pass from the testes through the vas deferens to the ejaculatory duct and then to the urethra






24. Multilayered sac of cells that contains - nourishes - and protects an immature ovum -produce estrogen






25. Union of gametes






26. 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






27. AKA sperm production -occurs in the seminiferous tubules






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






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






30. 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






31. 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






32. Egg






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






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






35. Reproductive structure of angiosperms






36. Undergoes disjunction






37. Sporophyte generation is the dominant - familiar form






38. 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






39. 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






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






41. Muscular chamber which is the site of fetal development






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






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






44. (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






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






46. First barrier that the sperm must penetrate -enzymes secreted by the sperm aid in penetration of the corona radiata -arosome is responsible for penetrating the zona pellucida; it releases enzymes that digest this layer - thereby allowing the sperm to






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






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






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






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