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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. 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






2. 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






3. Reproductive structure of angiosperms






4. Can be fertilized during the 12-24hr after ovulation -occurs in the lateral - widest portion of the fallopian tube -sperm must travel through the vaginal canal - cervix - uterus - and into the fallopian tubes to reach the ovum






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






6. A means of reproduction






7. Nuclear division and followed by cell division






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






9. 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






10. Specialized sex cells






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






13. 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






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






15. Secretes estrogen and progesterone






16. Menstrual flow






17. Ex: estrogens and progesterone -synthesized by ovaries






18. 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 -






19. Sporophyte generation is the dominant - familiar form






20. 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






21. Undergoes disjunction






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. Two haploid cells yielded from meiotic division of primary spermatocytes






24. AKA ovanan or fallopian tube -opens into the upper end of the uterus






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






26. Sperm production -occurs in the seminiferous tubules






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






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






29. Diploid cells that undergo meiosis to produce four haploid sperm of equal size






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






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






32. Common passageway for both the reproductive and exretory systems






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. Spore formation - vegetative propagation - and Artificial Vegetative Propagation






35. 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






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






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






38. Muscular chamber which is the site of fetal development






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






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






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






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






43. 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






44. Produces monoploid spores that develop into pollen grains






45. (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






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






47. 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






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






49. Have two cotyledons that absorb the endosperm






50. Located on scrotum -site for testosterone






Can you answer 50 questions in 15 minutes?



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