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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. Sperm production -occurs in the seminiferous tubules






2. Egg






3. Menstrual flow






4. 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






5. Homologous pairs (tetrads) align at the equatorial plane - and each pair attaches to a separate spindle fiber by its kinetochore






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






7. Common passageway for both the reproductive and exretory systems






8. Produces monoploid spores that develop into pollen grains






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






10. Split to form several bulbs






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






12. Located on scrotum -site for testosterone






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






14. 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






15. Produced after meioisis from spermatids that undergo a series of changes -AKA mature sperm -specialized for transporting the sperm nucleus to the ovum -elongated cell with a head - neck - body - and tail






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






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






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






19. 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






20. Secretes estrogen and progesterone






21. 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






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






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






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






25. (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






26. Have two cotyledons that absorb the endosperm






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






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






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






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






31. Surrounded by two layers of cells






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






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






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






35. Sporophyte generation is the dominant - familiar form






36. 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






37. Cell division that follows karyokinesis






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






39. Division and distribution of the cell's DNA to its two daughter cells such that each cell receives a complete copy of the original genome






40. Have one cotyledon






41. Uncoiled DNA






42. 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






43. Union of gametes






44. 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






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






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






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






48. 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






49. Specialized organs where gametes are produced






50. 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