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






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






3. Specialized sex cells






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






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






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






7. 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






8. 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 -






9. AKA sperm production -occurs in the seminiferous tubules






10. Common passageway for both the reproductive and exretory systems






11. Sperm production -occurs in the seminiferous tubules






12. 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






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






14. The production of female gametes -occurs in the ovarian follicles






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






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






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






18. 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






19. Cell division that follows karyokinesis






20. Haploid gametophyte gneration produces gametes by mitosis -gametophytes reproduce sexually - whereas the sporophyte gneration reproduces asexually






21. As in mitosis - the parent cell's chromosomes are replicated in the 2N number of sister chromatids






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






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






24. Specialized organs where gametes are produced






25. 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






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






27. Uncoiled DNA






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






29. Found in the tips of roots and stems where growth in length occurs






30. 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






31. (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






32. 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






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






34. 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






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






36. The spindle apparatus disappears. A nuclear membrane forms around each set of newly formed chromosomes. Thus - each nucleus contains the same number of chromosomes (the diploid number 2n) as the original or parent nucleus. The chromosomes uncoil - re






37. 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






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






39. Cell undergoes a period of growth and replication of genetic material before the initiation of mitosis -cell spends at least 90% of life in interphase -each chromosome is replicated so that during division - a complete copy of the genome can be distr






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






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






42. (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






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






44. Underground stems with bubs - like the eyes of potatoes - that can develop into adult plants






45. Surrounded by two layers of cells






46. Reproductive structure of angiosperms






47. Part of embryo that grows and feeds the embryo






48. Eggs






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






50. 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