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






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






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






4. (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






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






6. 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






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






8. Production of functional sex cells by adult organisms -fertilization forms a zygote -development of the zygote into another adult - completing the cycle






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






10. 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






11. Nuclear division and followed by cell division






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






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






14. Egg






15. 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






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






17. 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






18. AKA ovanan or fallopian tube -opens into the upper end of the uterus






19. Split to form several bulbs






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






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






22. Formed due to cortical reaction -hard layer that surrounds the ovum cell membrane and prevents multiple fertilizations -Followed by the fusion of sperm nucleus and form a diploid zygote






23. 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






24. Have both functional male and female gonads






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






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






27. Bulbs - tubers - runners - rhizomes






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






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






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






31. Common passageway for both the reproductive and exretory systems






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






33. 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






34. Part of embry that are seed leaves






35. A means of reproduction






36. Female gonads that produce oocytes






37. Result when a single zygote splits into two embryos






38. Specialized organs where gametes are produced






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






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






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






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






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






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






45. 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






46. 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 -






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






48. 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 -






49. Have two cotyledons that absorb the endosperm






50. Cell division that follows karyokinesis