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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 two cotyledons that absorb the endosperm






2. Sporophyte generation is the dominant - familiar form






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






4. 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






5. 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






6. Meristems provide a source of cells that can develop into an adult plant -can occur naturally or through human intervention -advantagous because it introduces no genetic variation and is a rapid form of reproduction






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






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






9. AKA sperm production -occurs in the seminiferous tubules






10. 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






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






12. Located on scrotum -site for testosterone






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






14. Secretes estrogen and progesterone






15. Specialized organs where gametes are produced






16. Diploid cells of spermatogonia






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






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






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






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






21. 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






22. Muscular chamber which is the site of fetal development






23. Uncoiled DNA






24. (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






25. Regrowth of a lost or injured body part






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






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






28. A tubelike structure formed by the sperm once in contact with the membrane -extends to the cell membrane and penetrates it - fusing the sperm cell membrane with that of the ovum -Sperm nucleus now enters the ovum's cytoplasm to complete Meiosis II






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






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






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






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






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






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






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






36. 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






37. 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






38. Reproductive structure of angiosperms






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






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






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






42. 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






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






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






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






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






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






48. A means of reproduction






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






50. 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 -