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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. Ex: estrogens and progesterone -synthesized by ovaries






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






3. Sperm production -occurs in the seminiferous tubules






4. Outer layer of oocyte cell membrane






5. Cell division that follows karyokinesis






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






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






8. 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






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






10. 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






11. 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






12. 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






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






14. 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






15. Result when a single zygote splits into two embryos






16. Located on scrotum -site for testosterone






17. A means of reproduction






18. Secretes estrogen and progesterone






19. Female gonads that produce oocytes






20. Part of embryo that grows and feeds the embryo






21. 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






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






23. Undifferentiated tissues in plants






24. 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






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






26. Menstrual flow






27. (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






28. Muscular chamber which is the site of fetal development






29. Split to form several bulbs






30. Nuclear division and followed by cell division






31. 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






32. 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






33. Regrowth of a lost or injured body part






34. 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






35. Have both functional male and female gonads






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






37. 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






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






39. The spindle apparatus disappears. A nuclear membrane forms around each set of newly formed chromosomes. Thus - each nucleus contains the same number of chromosomes (the diploid number 2n) as the original or parent nucleus. The chromosomes uncoil - re






40. 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






41. Practiced by terrestrial vertebrates and provides a direct route for sperm to reach the egg cell -increased chance for fertilization success and females produce fewer eggs






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






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






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






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






46. 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






47. Produced when each meiotic division -rapidly degenerate






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






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






50. 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 -