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






2. Sporophyte generation is the dominant - familiar form






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






4. 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






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






6. Specialized sex cells






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






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. Bulbs - tubers - runners - rhizomes






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






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






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






13. Eggs






14. 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






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






16. Four haploid cells produced from the second meiotic division after secondary spermatocytes






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






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






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






20. Cell division that follows karyokinesis






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






22. 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






23. Located on scrotum -site for testosterone






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






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






26. Comlex process involving the formation and fertilization of gametes and regulation of these processes by bot parents






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






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






29. Large cell containing most of the cytoplasm - RNA - organelles - and nutrients needed by a developing embryo






30. Female gonads that produce oocytes






31. (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






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






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






34. Menstrual flow






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






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






37. Reproductive structure of angiosperms






38. 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






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






40. (In Anaphase I) homologous pairs separate and are pulled to opposite poles of the cell -accounts for a fundamental Mendelian Law -each chromosome of paternal origin separates (or disjoins) from its homologue of maternal origin - and either chromosome






41. Have two cotyledons that absorb the endosperm






42. 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






43. 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 -






44. Undergoes disjunction






45. Inner layer of oocyte cell membrane






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






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






48. 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






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






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







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