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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. Muscular chamber which is the site of fetal development






2. 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






3. 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






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






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






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






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






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






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






10. Uncoiled DNA






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






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






13. Part of embry that are seed leaves






14. Have two cotyledons that absorb the endosperm






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






16. The production of female gametes -occurs in the ovarian follicles






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






18. Differs from asexual reproduction in that there are two parents involved and the end result is a geneticaly unique offspring -fusion of two gametes






19. 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






20. 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






21. Regrowth of a lost or injured body part






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






23. Egg






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






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






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






27. Specialized organs where gametes are produced






28. Union of gametes






29. Undergoes disjunction






30. Inner layer of oocyte cell membrane






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






32. 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






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






34. Have one cotyledon






35. 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






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






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






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






39. Sperm production -occurs in the seminiferous tubules






40. Menstrual flow






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






42. 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






43. Produces monoploid spores that develop into pollen grains






44. 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






45. A means of reproduction






46. When a diploid sporophyte generation produces ahaploid (monoploid) spore by meiosis - spores divide by mitosis to produce the haploid - or gametophyte - generation






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






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






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






50. 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