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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. 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






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






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






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






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






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






7. Undergoes disjunction






8. Sperm production -occurs in the seminiferous tubules






9. Bulbs - tubers - runners - rhizomes






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






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






12. 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






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






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






15. (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






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






17. 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






18. 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






19. 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






20. Have one cotyledon






21. 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






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






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






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






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






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






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






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






29. Have two cotyledons that absorb the endosperm






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






31. Result when a single zygote splits into two embryos






32. Lower - narrow end of the uterus -connects with the vaginal canal






33. Pass from the testes through the vas deferens to the ejaculatory duct and then to the urethra






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






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






36. 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






37. Secretes estrogen and progesterone






38. Common passageway for both the reproductive and exretory systems






39. Part of embry that are seed leaves






40. Split to form several bulbs






41. 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






42. Formed due to cortical reaction -hard layer that surrounds the ovum cell membrane and prevents multiple fertilizations -Followed by the fusion of sperm nucleus and form a diploid zygote






43. 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






44. Specialized sex cells






45. Undifferentiated tissues in plants






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






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






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






49. Regrowth of a lost or injured body part






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