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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. Located on scrotum -site for testosterone






2. Fibers of the spindle apparatus attach to each chromatid at the centromere to align the chromosomes at the center of the cell (equator)






3. External pouch that maintains the testes' temperature at 2C-4C lower than body tmperature - a condition essential for sperm survival






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






5. Part of embry that are seed leaves






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






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






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






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






10. Common passageway for both the reproductive and exretory systems






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






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






13. Have one cotyledon






14. Union of gametes






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






16. 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






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






18. Causes the glands of the endometrium to mature and produce secretions that prepare it for the implantation of an embryo -essential for the maintenance of the endometrium






19. Undergoes disjunction






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






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






22. Sporophyte generation is the dominant - familiar form






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






24. 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






25. Begins with the cessation of the menstrual flow from the previous cycle -FSH (Follicle Stimulating Hormone) from the anterior pituitary promotes the development of the follicle - which grows and begins secreting estrogen






26. A means of reproduction






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






28. 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






29. AKA sperm production -occurs in the seminiferous tubules






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






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






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






33. The process by which a cell doubles its organelles and cytoplasm - replicates its DNA - and then divides into two






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






35. Reproductive structure of angiosperms






36. 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






37. Found in the tips of roots and stems where growth in length occurs






38. Regrowth of a lost or injured body part






39. Split to form several bulbs






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






41. Muscular chamber which is the site of fetal development






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






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






44. 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






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






46. Production of offspring without fertilization -form new organisms by a single parent cell -offspring are genetic carbon copies of their parent cells -genetically identical to the parent cells (except mutations) -ex: fission - budding - regeneration -






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






48. 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






49. Produced when each meiotic division -rapidly degenerate






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