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






2. 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






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






4. 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






5. Located on scrotum -site for testosterone






6. 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






7. Inner layer of oocyte cell membrane






8. 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






9. Part of embry that are seed leaves






10. Undergoes disjunction






11. 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






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






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






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






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






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






17. Surrounded by two layers of cells






18. (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






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






20. Result when a single zygote splits into two embryos






21. 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






22. Bulbs - tubers - runners - rhizomes






23. Reproductive structure of angiosperms






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






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






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






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






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






29. Ex: estrogens and progesterone -synthesized by ovaries






30. Undifferentiated tissues in plants






31. 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






32. Part of embryo that grows and feeds the embryo






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






34. Nuclear division and followed by cell division






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






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






37. 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






38. Have two cotyledons that absorb the endosperm






39. 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






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






41. 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






42. Split to form several bulbs






43. Sporophyte generation is the dominant - familiar form






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






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






46. Produces monoploid spores that develop into pollen grains






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






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






49. Diploid cells of spermatogonia






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