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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. 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






2. Inner layer of oocyte cell membrane






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






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






5. AKA sperm production -occurs in the seminiferous tubules






6. Eggs






7. Sperm production -occurs in the seminiferous tubules






8. Produced when each meiotic division -rapidly degenerate






9. Part of embry that are seed leaves






10. Bulbs - tubers - runners - rhizomes






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






12. Secretes estrogen and progesterone






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






14. AKA ovanan or fallopian tube -opens into the upper end of the uterus






15. Muscular chamber which is the site of fetal development






16. Sporophyte generation is the dominant - familiar form






17. Uncoiled DNA






18. 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






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






20. (In Prophase I) each chromosome consists of two sister chromatids - each synaptic pair of homologous chromosomes containing four chromatids






21. Differs from asexual reproduction in that there are two parents involved and the end result is a geneticaly unique offspring -fusion of two gametes






22. Have two cotyledons that absorb the endosperm






23. Specialized organs where gametes are produced






24. A means of reproduction






25. Four haploid cells produced from the second meiotic division after secondary spermatocytes






26. Part of embryo that grows and feeds the embryo






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






28. Produced after meioisis from spermatids that undergo a series of changes -AKA mature sperm -specialized for transporting the sperm nucleus to the ovum -elongated cell with a head - neck - body - and tail






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






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






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






32. 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






33. Produces monoploid spores that develop into pollen grains






34. Diploid cells of spermatogonia






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






36. Regrowth of a lost or injured body part






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






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






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






40. Split to form several bulbs






41. 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






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






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






44. Located on scrotum -site for testosterone






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






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






47. Union of gametes






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






49. 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






50. 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