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






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






3. Nuclear division and followed by cell division






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






5. Gametophyte is the dominant generation -smaller - short lived organism that depends on the gametophyte for energy and nutrients - sporophytes grow on top of the gametophytes and produce spores that develop into gametophytes






6. 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






7. Surrounded by two layers of cells






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






9. Regrowth of a lost or injured body part






10. 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






11. 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






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






13. Sperm production -occurs in the seminiferous tubules






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






15. Common passageway for both the reproductive and exretory systems






16. Bulbs - tubers - runners - rhizomes






17. The process by which gametes are produced -involves two divisions of primary sex cells resulting in four haploid cells called gametes






18. 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






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






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






21. Eggs






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. Have one cotyledon






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






25. Located on scrotum -site for testosterone






26. Outer layer of oocyte cell membrane






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






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






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






30. Part of embry that are seed leaves






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






32. 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






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






34. 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






35. Specialized sex cells






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






37. 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






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






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






40. Muscular chamber which is the site of fetal development






41. 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






42. (In Prophase I) process where homologous chromosomes (chromosomes that code for the same traits - one inherited form each parent) come together and intertwine






43. 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






44. 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






45. Secretes estrogen and progesterone






46. 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 -






47. Female gonads that produce oocytes






48. The process by which a cell doubles its organelles and cytoplasm - replicates its DNA - and then divides into two






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






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