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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. Have one cotyledon






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






3. Nuclear division and followed by cell division






4. 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






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






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






7. AKA sperm production -occurs in the seminiferous tubules






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






9. Egg






10. Very similar to mitosis - except that meiosis II is not preceded by chromosomal replication -chromosomes align at the equator - separate and move to opposite poles - and are surrounded by a reformed nuclear membrane -new cells have the haploid number






11. 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






12. Part of embryo that develops from the outer covering of the ovule






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






14. Located on scrotum -site for testosterone






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






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






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






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






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






20. (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






21. Spore formation - vegetative propagation - and Artificial Vegetative Propagation






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






23. Undifferentiated tissues in plants






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






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






26. Near the end of telophase - the cytoplasm divides into two daughter cells - each wit a complete nucleus and its own set of organelles -In animal cells - a cleavage furrow forms - and the cell membrane indents along the equator of the cell and finally






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






28. Menstrual flow






29. 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






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






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






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






33. 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






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






35. Regrowth of a lost or injured body part






36. Sperm production -occurs in the seminiferous tubules






37. 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






38. Cell division that follows karyokinesis






39. Mass of cells formed when the zygote divides






40. 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






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






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






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






44. Begins with the cessation of the menstrual flow from the previous cycle -FSH (Follicle Stimulating Hormone) from the anterior pituitary promotes the development of the follicle - which grows and begins secreting estrogen






45. 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






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






47. Production of functional sex cells by adult organisms -fertilization forms a zygote -development of the zygote into another adult - completing the cycle






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






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






50. Undergoes disjunction