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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. Undergoes disjunction






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






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






4. Produced in developing placenta if fertilization occurs - maintaining the corpus luteum and - thus - the supply of estrogen and progesterone that maintains the uterus - until the placenta takes over production of these hormones






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






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






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






8. 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






9. Daughter cells of unequal size produced from one primary oocyte per month completes meiosis I -expelled from the follicle during ovulation






10. 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






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






12. Undifferentiated tissues in plants






13. Cell undergoes a period of growth and replication of genetic material before the initiation of mitosis -cell spends at least 90% of life in interphase -each chromosome is replicated so that during division - a complete copy of the genome can be distr






14. 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






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






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






17. Regrowth of a lost or injured body part






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






19. Secretes estrogen and progesterone






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






21. Haploid gametophyte gneration produces gametes by mitosis -gametophytes reproduce sexually - whereas the sporophyte gneration reproduces asexually






22. Split to form several bulbs






23. Have two cotyledons that absorb the endosperm






24. 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






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






26. Produced when each meiotic division -rapidly degenerate






27. Specialized organs where gametes are produced






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






29. Part of embryo that grows and feeds the embryo






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






31. (In Prophase I) chromatids of homologous chromosomes break at corresponding points and exchange equivalent pieces of DNA -occurs between homologous chromosomes and not between sister chromatids of the same chromosomes (the latter are identical - so c






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






33. Outer layer of oocyte cell membrane






34. Female gonads that produce oocytes






35. Part of embry that are seed leaves






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






37. Muscular chamber which is the site of fetal development






38. Bulbs - tubers - runners - rhizomes






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






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






41. Eggs






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






43. Triggered by acrosomal reaction causing calcium ions to be released into the cytoplasm






44. 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






45. 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






46. Reproductive structure of angiosperms






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






48. 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






49. Result when a single zygote splits into two embryos






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