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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. Split to form several bulbs






2. Regrowth of a lost or injured body part






3. (In Prophase I) process where homologous chromosomes (chromosomes that code for the same traits - one inherited form each parent) come together and intertwine






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






5. 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






6. 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






7. 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






8. Egg






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






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






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






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






13. 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






14. AKA stolon -woody - underground stems -can develop new upright stems






15. Uncoiled DNA






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






17. Sperm production -occurs in the seminiferous tubules






18. Produces monoploid spores that develop into pollen grains






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






20. Union of gametes






21. After ovulation - LH induces the ruptured follicle to develop into the corpus luteum






22. 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






23. Similar to mitosis in that a cell duplicates its chromosomes before undergoing the process -whereas mitosis preserves the diploid number of the cell - meiosis produces the haploid (1N) number - having the number of chromosomes






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






25. 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






26. Produced when each meiotic division -rapidly degenerate






27. Daughter cells of unequal size produced from one primary oocyte per month completes meiosis I -expelled from the follicle during ovulation






28. Have one cotyledon






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






30. 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






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






32. AKA sperm production -occurs in the seminiferous tubules






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






34. 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






35. (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






36. Specialized organs where gametes are produced






37. 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 -






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






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






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






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






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






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






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






45. 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






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






47. 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






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






49. 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 -






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







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