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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. Part of embryo that grows and feeds the embryo






2. Produced when each meiotic division -rapidly degenerate






3. Stems running above and along the gorund - extending form the main stem -can produce new roots and upright stems






4. A means of reproduction






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






6. Uncoiled DNA






7. 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






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






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






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. Surrounded by two layers of cells






12. When a diploid sporophyte generation produces ahaploid (monoploid) spore by meiosis - spores divide by mitosis to produce the haploid - or gametophyte - generation






13. 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






14. 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






15. Regrowth of a lost or injured body part






16. 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






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






18. First barrier that the sperm must penetrate -enzymes secreted by the sperm aid in penetration of the corona radiata -arosome is responsible for penetrating the zona pellucida; it releases enzymes that digest this layer - thereby allowing the sperm to






19. Muscular chamber which is the site of fetal development






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






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






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






23. 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






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






25. Result when a single zygote splits into two embryos






26. Outer layer of oocyte cell membrane






27. Undergoes disjunction






28. 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






29. Ex: estrogens and progesterone -synthesized by ovaries






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






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






32. Centromeres split so that each chromatid has its own distinct centromere - thus allowing sister chromatids to separate. The sister chromatids are pulled toward the opposite poles of the cell by the shortening of the spindle fibers. Spindle fibers are






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






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






35. 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






36. Inner layer of oocyte cell membrane






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






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






39. 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






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






41. Split to form several bulbs






42. 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






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






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






45. Bulbs - tubers - runners - rhizomes






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






47. Chromatin condenses into chromosomes - the spindle apparatus forms - and the nucleoli and nuclear membrane disappear






48. 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






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






50. Mass of cells formed when the zygote divides