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






2. Surrounded by two layers of cells






3. Reproductive structure of angiosperms






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






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






6. 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






7. Specialized sex cells






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






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






10. 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






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






12. 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






13. (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






14. Split to form several bulbs






15. 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






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






17. Fibers of the spindle apparatus attach to each chromatid at the centromere to align the chromosomes at the center of the cell (equator)






18. A means of reproduction






19. Diploid cells of spermatogonia






20. Muscular chamber which is the site of fetal development






21. 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






22. 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






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






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






25. Part of embry that are seed leaves






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






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






28. Specialized organs where gametes are produced






29. Undifferentiated tissues in plants






30. A tubelike structure formed by the sperm once in contact with the membrane -extends to the cell membrane and penetrates it - fusing the sperm cell membrane with that of the ovum -Sperm nucleus now enters the ovum's cytoplasm to complete Meiosis II






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






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






33. Consists almost entirely of the nucleus - which contains the paternal genome






34. The embryonic undifferentiated cells that growth in higher plants are restricted to -undergo active cell reproduction






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. Spore formation - vegetative propagation - and Artificial Vegetative Propagation






37. (In Prophase I) process where homologous chromosomes (chromosomes that code for the same traits - one inherited form each parent) come together and intertwine






38. Produced in developing placenta if fertilization occurs - maintaining the corpus luteum and - thus - the supply of estrogen and progesterone that maintains the uterus - until the placenta takes over production of these hormones






39. 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






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






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






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






43. 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






44. 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






45. Egg






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






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






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






49. 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






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