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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. Common passageway for both the reproductive and exretory systems






2. Production of offspring without fertilization -form new organisms by a single parent cell -offspring are genetic carbon copies of their parent cells -genetically identical to the parent cells (except mutations) -ex: fission - budding - regeneration -






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






4. When a diploid sporophyte generation produces ahaploid (monoploid) spore by meiosis - spores divide by mitosis to produce the haploid - or gametophyte - generation






5. 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






6. AKA sperm production -occurs in the seminiferous tubules






7. Surrounded by two layers of cells






8. Split to form several bulbs






9. Bulbs - tubers - runners - rhizomes






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






11. 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






12. Muscular chamber which is the site of fetal development






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. 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






15. Method of growth - development - and replacement of worn-out cells






16. Underground stems with bubs - like the eyes of potatoes - that can develop into adult plants






17. 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






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






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






20. Cell division that follows karyokinesis






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






22. 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






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






24. 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






25. 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






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






27. 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






28. Have one cotyledon






29. Reproductive structure of angiosperms






30. Mass of cells formed when the zygote divides






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






32. Diploid cells of spermatogonia






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






34. 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






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






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






37. Uncoiled DNA






38. Ex: estrogens and progesterone -synthesized by ovaries






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






40. Produces monoploid spores that develop into pollen grains






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






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






43. 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






44. Union of gametes






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






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






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






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






49. 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






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