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






2. Cell division that follows karyokinesis






3. Sporophyte generation is the dominant - familiar form






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






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






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






7. (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






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






9. 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






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






11. Bulbs - tubers - runners - rhizomes






12. 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






13. Part of embryo that grows and feeds the embryo






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






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






16. A means of reproduction






17. Ex: estrogens and progesterone -synthesized by ovaries






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






19. Egg






20. Union of gametes






21. Regrowth of a lost or injured body part






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






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






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






25. Outer layer of oocyte cell membrane






26. Cut piece of stem can develop new roots in water or moist gorund - which can be used to accelerate root formation -layering: stems of certain plants - will take root when bent to the gorund and covered with soil -stem of one plant (scion) can be atta






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






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






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






30. Muscular chamber which is the site of fetal development






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






32. (In Anaphase I) homologous pairs separate and are pulled to opposite poles of the cell -accounts for a fundamental Mendelian Law -each chromosome of paternal origin separates (or disjoins) from its homologue of maternal origin - and either chromosome






33. Secretes estrogen and progesterone






34. Specialized organs where gametes are produced






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






36. 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






37. 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






38. 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






39. 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






40. Inner layer of oocyte cell membrane






41. Menstrual flow






42. 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






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






44. 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






45. Produces monoploid spores that develop into pollen grains






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






47. Gametophyte is the dominant generation -smaller - short lived organism that depends on the gametophyte for energy and nutrients - sporophytes grow on top of the gametophytes and produce spores that develop into gametophytes






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






49. Undergoes disjunction






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