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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. AKA lateral meristem -located between the xylem and phloem






2. Cell undergoes a period of growth and replication of genetic material before the initiation of mitosis -cell spends at least 90% of life in interphase -each chromosome is replicated so that during division - a complete copy of the genome can be distr






3. The development of an unfertilized egg into an adult organism






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






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






6. Produces two intermediate daughter cells with N chromosomes with sister chromatids






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






8. 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






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






10. 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






11. External pouch that maintains the testes' temperature at 2C-4C lower than body tmperature - a condition essential for sperm survival






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






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






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






15. Undergoes disjunction






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






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






18. AKA sperm production -occurs in the seminiferous tubules






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






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






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






22. 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






23. Contains elongated cell with head - tail - neck - and body






24. Bulbs - tubers - runners - rhizomes






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






26. 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






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






28. 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






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






30. 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






31. Sperm production -occurs in the seminiferous tubules






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






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






34. Produced when each meiotic division -rapidly degenerate






35. Eggs






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






37. Specialized sex cells






38. Have one cotyledon






39. Part of embryo that grows and feeds the embryo






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






41. 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






42. Ex: estrogens and progesterone -synthesized by ovaries






43. Undifferentiated tissues in plants






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






45. 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






46. Secretes estrogen and progesterone






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






48. 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






49. 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






50. 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






Can you answer 50 questions in 15 minutes?



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