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. 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






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. Specialized organs where gametes are produced






4. Split to form several bulbs






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






6. 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






7. Union of gametes






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






9. Mass of cells formed when the zygote divides






10. 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






11. Menstrual flow






12. Sporophyte generation is the dominant - familiar form






13. Undergoes disjunction






14. 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






15. 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






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






17. Undifferentiated tissues in plants






18. Produces monoploid spores that develop into pollen grains






19. Central region where - after replication - the chromosomes consist of two identical sister chromatids held together in interphase






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






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






22. 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






23. 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






24. Uncoiled DNA






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






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






27. Occurs in vertebrates that reproduce in water (fish and amphibians) -female lays eggs in water and male deposits sperm in the vicinity -lack of direct passage of sperm from male to female reduces chances of fertilization considerably






28. 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






29. Produced when each meiotic division -rapidly degenerate






30. Diploid cells of spermatogonia






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






32. A means of reproduction






33. Bulbs - tubers - runners - rhizomes






34. Located on scrotum -site for testosterone






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






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






37. 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






38. 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






39. Part of embryo that grows and feeds the embryo






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






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






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






44. Have two cotyledons that absorb the endosperm






45. 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






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






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. Secretes estrogen and progesterone






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






50. 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