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






2. Specialized organs where gametes are produced






3. Regrowth of a lost or injured body part






4. The production of female gametes -occurs in the ovarian follicles






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






6. Reproductive structure of angiosperms






7. 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






8. Muscular chamber which is the site of fetal development






9. 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






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






11. (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






12. Undergoes disjunction






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






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






15. Undifferentiated tissues in plants






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






17. Practiced by terrestrial vertebrates and provides a direct route for sperm to reach the egg cell -increased chance for fertilization success and females produce fewer eggs






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






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






20. 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






21. Egg






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






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






24. 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






25. 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






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






27. 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






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






29. Sporophyte generation is the dominant - familiar form






30. Diploid cells of spermatogonia






31. 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






32. Surrounded by two layers of cells






33. 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






34. Union of gametes






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






36. Eggs






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






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






39. 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 -






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






41. Inner layer of oocyte cell membrane






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






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






44. Part of embryo that grows and feeds the embryo






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






46. 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






47. Part of embryo that is the precursor of the upper stem and leaves






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






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






50. Produces monoploid spores that develop into pollen grains