Test your basic knowledge |

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






2. Reproductive structure of angiosperms






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






4. Specialized organs where gametes are produced






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






6. Inner layer of oocyte cell membrane






7. Cell division that follows karyokinesis






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






9. 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






10. Have one cotyledon






11. 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






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






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






14. Outer layer of oocyte cell membrane






15. 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






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






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






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






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






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






21. 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






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






23. Differs from asexual reproduction in that there are two parents involved and the end result is a geneticaly unique offspring -fusion of two gametes






24. Near the end of telophase - the cytoplasm divides into two daughter cells - each wit a complete nucleus and its own set of organelles -In animal cells - a cleavage furrow forms - and the cell membrane indents along the equator of the cell and finally






25. Part of embryo that grows and feeds the embryo






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






27. Located on scrotum -site for testosterone






28. 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






29. 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






30. Muscular chamber which is the site of fetal development






31. Sperm production -occurs in the seminiferous tubules






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






33. 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






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






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






36. Mass of cells formed when the zygote divides






37. Bulbs - tubers - runners - rhizomes






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






39. 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 -






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






41. Contains elongated cell with head - tail - neck - and body






42. Produced when each meiotic division -rapidly degenerate






43. 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






44. 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






45. Ex: estrogens and progesterone -synthesized by ovaries






46. Undergoes disjunction






47. 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






48. Produces monoploid spores that develop into pollen grains






49. Caplike structure - derived from the Golgi apparatus - develops over the anterior half of the head -contains enzymes needed to penetrate the tough outer covering of the ovum






50. As in mitosis - the parent cell's chromosomes are replicated in the 2N number of sister chromatids