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. Ex: estrogens and progesterone -synthesized by ovaries






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






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






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






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






6. Have both functional male and female gonads






7. 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






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






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






10. Diploid cells of spermatogonia






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






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






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






14. 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






15. Bulbs - tubers - runners - rhizomes






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






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






18. Production of functional sex cells by adult organisms -fertilization forms a zygote -development of the zygote into another adult - completing the cycle






19. Uncoiled DNA






20. Egg






21. AKA sperm production -occurs in the seminiferous tubules






22. Regrowth of a lost or injured body part






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






24. Mass of cells formed when the zygote divides






25. Female gonads that produce oocytes






26. 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






27. Sperm production -occurs in the seminiferous tubules






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






29. 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






30. Menstrual flow






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






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






33. 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






34. 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 -






35. Surrounded by two layers of cells






36. Produced when each meiotic division -rapidly degenerate






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






38. 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






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






40. Produces monoploid spores that develop into pollen grains






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






42. Eggs






43. 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






44. 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






45. 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






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






47. A means of reproduction






48. 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






49. Part of embryo that develops into the lower and root






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