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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. (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






2. 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






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






4. 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






5. 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






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






7. Secretes estrogen and progesterone






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






9. Sperm production -occurs in the seminiferous tubules






10. 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






11. Specialized sex cells






12. Can be fertilized during the 12-24hr after ovulation -occurs in the lateral - widest portion of the fallopian tube -sperm must travel through the vaginal canal - cervix - uterus - and into the fallopian tubes to reach the ovum






13. Centromeres split so that each chromatid has its own distinct centromere - thus allowing sister chromatids to separate. The sister chromatids are pulled toward the opposite poles of the cell by the shortening of the spindle fibers. Spindle fibers are






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






15. 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






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






17. Have two cotyledons that absorb the endosperm






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






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






20. Large cell containing most of the cytoplasm - RNA - organelles - and nutrients needed by a developing embryo






21. 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






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






23. Bulbs - tubers - runners - rhizomes






24. Undergoes disjunction






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






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






27. Uncoiled DNA






28. Menstrual flow






29. Common passageway for both the reproductive and exretory systems






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






31. Inner layer of oocyte cell membrane






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






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






34. Diploid cells of spermatogonia






35. Produces monoploid spores that develop into pollen grains






36. Outer layer of oocyte cell membrane






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






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






39. 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






40. Nuclear division and followed by cell division






41. Plant cells lack centrioles -spindle apparatus is synthesized by mcrotubule organizing centers that are not visible -cytokinesis in animal cells proceeds through production of a cleavage furrow -Plant cells are rigid and can't form cleavage furrows -






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






43. Union of gametes






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






45. Have one cotyledon






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






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






48. 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






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






50. Division and distribution of the cell's DNA to its two daughter cells such that each cell receives a complete copy of the original genome