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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. Produces monoploid spores that develop into pollen grains






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






4. A means of reproduction






5. 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






6. Eggs






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






8. Specialized sex cells






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






10. Specialized organs where gametes are produced






11. 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






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






13. 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






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






15. Common passageway for both the reproductive and exretory systems






16. 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






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






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






19. 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






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






21. Diploid cells of spermatogonia






22. Secretes estrogen and progesterone






23. Inner layer of oocyte cell membrane






24. 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






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






26. Result when a single zygote splits into two embryos






27. AKA sperm production -occurs in the seminiferous tubules






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






29. Mass of cells formed when the zygote divides






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






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






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






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






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






35. Cell division that follows karyokinesis






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






37. 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






38. 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






39. Part of embryo that grows and feeds the embryo






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






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






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






43. 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






44. Bulbs - tubers - runners - rhizomes






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






46. 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






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






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






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






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