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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. Sporophyte generation is the dominant - familiar form






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






3. 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






4. Gametophyte is the dominant generation -smaller - short lived organism that depends on the gametophyte for energy and nutrients - sporophytes grow on top of the gametophytes and produce spores that develop into gametophytes






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






6. Production of offspring without fertilization -form new organisms by a single parent cell -offspring are genetic carbon copies of their parent cells -genetically identical to the parent cells (except mutations) -ex: fission - budding - regeneration -






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






8. Have one cotyledon






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






10. 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






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






12. Outer layer of oocyte cell membrane






13. (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






14. Eggs






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






16. First barrier that the sperm must penetrate -enzymes secreted by the sperm aid in penetration of the corona radiata -arosome is responsible for penetrating the zona pellucida; it releases enzymes that digest this layer - thereby allowing the sperm to






17. Undifferentiated tissues in plants






18. Muscular chamber which is the site of fetal development






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






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






21. Uncoiled DNA






22. Female gonads that produce oocytes






23. Inner layer of oocyte cell membrane






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






25. 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






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






27. Produces monoploid spores that develop into pollen grains






28. 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 -






29. Egg






30. Found in the abdominal cavity - below the digestive system -consist of thousands of follicles






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






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






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






34. Produced when each meiotic division -rapidly degenerate






35. AKA sperm production -occurs in the seminiferous tubules






36. Have two cotyledons that absorb the endosperm






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






38. Union of the egg and sperm nuclei to form a zygote with a diploid number of chromosomes






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






40. Bulbs - tubers - runners - rhizomes






41. Regulates secondary male sex characteristics including facial and pubic hair and voice changes






42. Mass of cells formed when the zygote divides






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






44. Split to form several bulbs






45. Result when a single zygote splits into two embryos






46. Some species of plants have flowers that contain only stamens and other flowers that contain only pistils






47. 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






48. Regrowth of a lost or injured body part






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






50. Cell division that follows karyokinesis