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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. Muscular chamber which is the site of fetal development






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






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






4. Reproductive structure of angiosperms






5. Surrounded by two layers of cells






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






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






8. Produced when each meiotic division -rapidly degenerate






9. 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






10. A means of reproduction






11. The process by which a cell doubles its organelles and cytoplasm - replicates its DNA - and then divides into two






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






13. Sperm production -occurs in the seminiferous tubules






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






15. Female gonads that produce oocytes






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






17. 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






18. 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






19. (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






20. Have two cotyledons that absorb the endosperm






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






22. Common passageway for both the reproductive and exretory systems






23. Have one cotyledon






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






25. 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






26. Part of embry that are seed leaves






27. 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






28. Part of embryo that grows and feeds the embryo






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






30. Triggered by acrosomal reaction causing calcium ions to be released into the cytoplasm






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






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






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






34. 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






35. (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






36. Specialized organs where gametes are produced






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






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






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






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






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






42. Ex: estrogens and progesterone -synthesized by ovaries






43. Diploid cells of spermatogonia






44. 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






45. 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






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






47. Split to form several bulbs






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






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






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







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