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






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






3. Part of embryo that grows and feeds the embryo






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






5. Have two cotyledons that absorb the endosperm






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






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






8. 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






9. Menstrual flow






10. 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






11. 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






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






13. Produced when one diploid primary female sex cell undergoes meiosis in the ovaries






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






15. Bulbs - tubers - runners - rhizomes






16. 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






17. 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






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






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






20. Undergoes disjunction






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






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






23. 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






24. Ex: estrogens and progesterone -synthesized by ovaries






25. 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 -






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






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






28. 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






29. Have one cotyledon






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






31. 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






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






33. Have both functional male and female gonads






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






35. Undifferentiated tissues in plants






36. Nuclear division and followed by cell division






37. 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






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






39. Sporophyte generation is the dominant - familiar form






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






41. Surrounded by two layers of cells






42. AKA sperm production -occurs in the seminiferous tubules






43. 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






44. 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 -






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






46. 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






47. Reproductive structure of angiosperms






48. 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






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






50. Found in the abdominal cavity - below the digestive system -consist of thousands of follicles