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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. Centriole pairs are now at opposite poles of the cell






2. Ex: estrogens and progesterone -synthesized by ovaries






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






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






5. 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






6. Regrowth of a lost or injured body part






7. 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






8. Nuclear division and followed by cell division






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






10. AKA sperm production -occurs in the seminiferous tubules






11. Part of embryo that grows and feeds the embryo






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






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






14. Have both functional male and female gonads






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






16. 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






17. Mass of cells formed when the zygote divides






18. Located on scrotum -site for testosterone






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






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






21. 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






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






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






24. Hormonal secretions of the ovaries - the hypothalamus - and the anterior pituitary play important roles in the female reproductive cycle -divided into the follicular phase - ovulation - the luteal phase - and menstruation






25. Muscular chamber which is the site of fetal development






26. 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






27. Bulbs - tubers - runners - rhizomes






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






29. Specialized organs where gametes are produced






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






31. Undifferentiated tissues in plants






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






33. Uncoiled DNA






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






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






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






37. (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






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






39. 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






40. Common passageway for both the reproductive and exretory systems






41. 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






42. Diploid cells of spermatogonia






43. Split to form several bulbs






44. Egg






45. 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






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






47. (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






48. Sporophyte generation is the dominant - familiar form






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






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