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






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






3. Inner layer of oocyte cell membrane






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






5. Part of embryo that develops from the outer covering of the ovule






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






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






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






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






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






11. Occurs midway through the cycle -a mature ovarian follicle bursts and releases an ovum -caused by a surge in LH (Luteinizing Hormone) that is preceded - and in part caused - by a peak in estrogen levels






12. Have one cotyledon






13. Sperm production -occurs in the seminiferous tubules






14. Produces monoploid spores that develop into pollen grains






15. Secretes estrogen and progesterone






16. 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






17. Muscular chamber which is the site of fetal development






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






20. Simple form of asexual reproduction seen in prokaryotic organisms -DNA replicates and a new plasma membrane and cell wall grow inward along the midline of the cell - dividing it into two equally size cells with equal maounts of cytoplasm - each conta






21. Regrowth of a lost or injured body part






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






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






24. Ex: estrogens and progesterone -synthesized by ovaries






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






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






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






28. Eggs






29. Egg






30. Cell division that follows karyokinesis






31. Daughter cells of unequal size produced from one primary oocyte per month completes meiosis I -expelled from the follicle during ovulation






32. (In Prophase I) each chromosome consists of two sister chromatids - each synaptic pair of homologous chromosomes containing four chromatids






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






34. The development of an unfertilized egg into an adult organism






35. Female gonads that produce oocytes






36. 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






37. A means of reproduction






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






39. Have two cotyledons that absorb the endosperm






40. 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






41. 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






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






43. 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






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. Bulbs - tubers - runners - rhizomes






46. 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






47. Expanding partition that grows outward from the interior of the cell until it reaches the cell membrane






48. 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






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






50. Have both functional male and female gonads