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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. 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






2. Have both functional male and female gonads






3. Have two cotyledons that absorb the endosperm






4. Split to form several bulbs






5. Underground stems with bubs - like the eyes of potatoes - that can develop into adult plants






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






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






8. 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






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






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






11. Can be fertilized during the 12-24hr after ovulation -occurs in the lateral - widest portion of the fallopian tube -sperm must travel through the vaginal canal - cervix - uterus - and into the fallopian tubes to reach the ovum






12. Bulbs - tubers - runners - rhizomes






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






14. 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






15. A means of reproduction






16. Common passageway for both the reproductive and exretory systems






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






18. Located on scrotum -site for testosterone






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






20. Sperm production -occurs in the seminiferous tubules






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






22. Muscular chamber which is the site of fetal development






23. Released from the ovary into the abdominal cavity and drawn into the nearby oviduct






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






25. Secretes estrogen and progesterone






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






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






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






29. Nuclear division and followed by cell division






30. 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






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






32. Pass from the testes through the vas deferens to the ejaculatory duct and then to the urethra






33. Result when a single zygote splits into two embryos






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






35. 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






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






37. 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






38. Outer layer of oocyte cell membrane






39. 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






40. 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






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






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






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






44. (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






45. 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






46. Sporophyte generation is the dominant - familiar form






47. 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






48. Cell division that follows karyokinesis






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






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