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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. Part of embry that are seed leaves






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






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






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






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






7. Regrowth of a lost or injured body part






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






9. 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






10. Centriole pairs are now at opposite poles of the cell






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






12. 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






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






14. Produces monoploid spores that develop into pollen grains






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






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






17. 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






18. Cell division that follows karyokinesis






19. Male gonads - produce sperm in the tightly coiled seminiferous tubules






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






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






22. The development of an unfertilized egg into an adult organism






23. 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






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






25. Central region where - after replication - the chromosomes consist of two identical sister chromatids held together in interphase






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






27. 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






28. 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






29. 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






30. 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






31. AKA sperm production -occurs in the seminiferous tubules






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






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






34. Comlex process involving the formation and fertilization of gametes and regulation of these processes by bot parents






35. Have both functional male and female gonads






36. Part of embryo that grows and feeds the embryo






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






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






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






40. Secretes estrogen and progesterone






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. 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






43. AKA stolon -woody - underground stems -can develop new upright stems






44. Inner layer of oocyte cell membrane






45. Mass of cells formed when the zygote divides






46. Have one cotyledon






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






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






49. The male organ of the flower and consists of a thin - stalk-like filament






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