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






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






3. 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






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






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






6. Surrounded by two layers of cells






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






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






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






10. 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






11. 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






12. Produced when each meiotic division -rapidly degenerate






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






14. Specialized sex cells






15. 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






16. Steroid hormones necessary for normal female maturation -stimulate the development of the female reproductive tract and contribute to the development of secondary sexual characteristics and sex drive -responsible for the thickening of the endometrium






17. Menstrual flow






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






19. 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






20. Outer layer of oocyte cell membrane






21. Have one cotyledon






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






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






24. Very similar to mitosis - except that meiosis II is not preceded by chromosomal replication -chromosomes align at the equator - separate and move to opposite poles - and are surrounded by a reformed nuclear membrane -new cells have the haploid number






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






26. Have two cotyledons that absorb the endosperm






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






28. 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






29. Four haploid cells produced from the second meiotic division after secondary spermatocytes






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






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






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






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






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






35. Sperm production -occurs in the seminiferous tubules






36. Secretes estrogen and progesterone






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






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






39. AKA sperm production -occurs in the seminiferous tubules






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






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






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






43. 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






44. Split to form several bulbs






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






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






47. Mass of cells formed when the zygote divides






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






49. Ex: estrogens and progesterone -synthesized by ovaries






50. 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