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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. Part of embry that are seed leaves






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






3. Cell division that follows karyokinesis






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






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






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






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






8. Nuclear division and followed by cell division






9. Plant cells lack centrioles -spindle apparatus is synthesized by mcrotubule organizing centers that are not visible -cytokinesis in animal cells proceeds through production of a cleavage furrow -Plant cells are rigid and can't form cleavage furrows -






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






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






12. Produces monoploid spores that develop into pollen grains






13. 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






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






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






16. Replication of the nucleus followed by unequal cytokinesis -membrane pinches inward to forma new cell that is smaller in size but genetically identical to the parent cell






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






18. Eggs






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






20. 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






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






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






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






24. 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






25. Uncoiled DNA






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






27. 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






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






29. Regrowth of a lost or injured body part






30. Sporophyte generation is the dominant - familiar form






31. Part of embryo that grows and feeds the embryo






32. 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






33. Ex: estrogens and progesterone -synthesized by ovaries






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






35. 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






36. 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






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






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






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






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






41. 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






42. 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






43. Sperm production -occurs in the seminiferous tubules






44. Result when two ova are released in one ovarian cycle and are fertilized by two different sperm






45. 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 -






46. Surrounded by two layers of cells






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






48. Outer layer of oocyte cell membrane






49. 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






50. Located on scrotum -site for testosterone