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






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






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






4. 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






5. Muscular chamber which is the site of fetal development






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






7. 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






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






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






10. Menstrual flow






11. Regrowth of a lost or injured body part






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






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






14. Diploid cells that undergo meiosis to produce four haploid sperm of equal size






15. Produced when each meiotic division -rapidly degenerate






16. (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






17. 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 -






18. Result when a single zygote splits into two embryos






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. 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






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






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






23. AKA sperm production -occurs in the seminiferous tubules






24. 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






25. Diploid cells of spermatogonia






26. 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






27. 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






28. Undergoes disjunction






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






30. Specialized organs where gametes are produced






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






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






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






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






35. Cut piece of stem can develop new roots in water or moist gorund - which can be used to accelerate root formation -layering: stems of certain plants - will take root when bent to the gorund and covered with soil -stem of one plant (scion) can be atta






36. Union of gametes






37. Reproductive structure of angiosperms






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






39. Egg






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






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






42. 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






43. 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 -






44. 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






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






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






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






48. 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






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






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