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






2. Sporophyte generation is the dominant - familiar form






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






4. 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






5. (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






6. 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






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






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






9. 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






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






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






12. Division and distribution of the cell's DNA to its two daughter cells such that each cell receives a complete copy of the original genome






13. Specialized cells with hard coverings that prevent loss of water






14. Homologous pairs (tetrads) align at the equatorial plane - and each pair attaches to a separate spindle fiber by its kinetochore






15. 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






16. Split to form several bulbs






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






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. Union of the egg and sperm nuclei to form a zygote with a diploid number of chromosomes






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






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






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






23. Produced when each meiotic division -rapidly degenerate






24. Specialized organs where gametes are produced






25. Located on scrotum -site for testosterone






26. A means of reproduction






27. Occurs midway through the cycle -a mature ovarian follicle bursts and releases an ovum -caused by a surge in LH (Luteinizing Hormone) that is preceded - and in part caused - by a peak in estrogen levels






28. AKA lateral meristem -located between the xylem and phloem






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






30. Union of gametes






31. Have both functional male and female gonads






32. Nuclear division and followed by cell division






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






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






35. Surrounded by two layers of cells






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






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






38. Undergoes disjunction






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






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






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






42. Inner layer of oocyte cell membrane






43. Part of embry that are seed leaves






44. 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






45. 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






46. 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






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






48. Sperm production -occurs in the seminiferous tubules






49. Secretes estrogen and progesterone






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