Test your basic knowledge |

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






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






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






4. Part of embryo that grows and feeds the embryo






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






6. (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






7. Undifferentiated tissues in plants






8. Located on scrotum -site for testosterone






9. 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






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






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






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






13. Chromosomes condense - and the centriole pairs (in animals) separate and move towards the opposite poles of the cell. the spindle apparatus forms between them - and the nuclear membrane dissolves - allowing the spindle fibers to interact with the chr






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






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






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






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






19. 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






20. Eggs






21. Bulbs - tubers - runners - rhizomes






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






23. 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






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






25. 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






26. Nuclear division and followed by cell division






27. Egg






28. Result when a single zygote splits into two embryos






29. 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






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






31. Produced when each meiotic division -rapidly degenerate






32. Produces monoploid spores that develop into pollen grains






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






34. Practiced by terrestrial vertebrates and provides a direct route for sperm to reach the egg cell -increased chance for fertilization success and females produce fewer eggs






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






36. 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






37. Female gonads that produce oocytes






38. 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 -






39. Menstrual flow






40. Regrowth of a lost or injured body part






41. Sperm production -occurs in the seminiferous tubules






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






43. Triggered by acrosomal reaction causing calcium ions to be released into the cytoplasm






44. 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






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






46. Inner layer of oocyte cell membrane






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






48. Specialized sex cells






49. AKA sperm production -occurs in the seminiferous tubules






50. Undergoes disjunction