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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. Undifferentiated tissues in plants






2. Produces monoploid spores that develop into pollen grains






3. Muscular chamber which is the site of fetal development






4. Have one cotyledon






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






6. 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






7. 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






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






9. Mass of cells formed when the zygote divides






10. Haploid gametophyte gneration produces gametes by mitosis -gametophytes reproduce sexually - whereas the sporophyte gneration reproduces asexually






11. 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






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






13. A means of reproduction






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






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






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






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






18. Meristems provide a source of cells that can develop into an adult plant -can occur naturally or through human intervention -advantagous because it introduces no genetic variation and is a rapid form of reproduction






19. Production of functional sex cells by adult organisms -fertilization forms a zygote -development of the zygote into another adult - completing the cycle






20. 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






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






22. Specialized sex cells






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






24. Causes the glands of the endometrium to mature and produce secretions that prepare it for the implantation of an embryo -essential for the maintenance of the endometrium






25. 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






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






27. 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 -






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






29. Eggs






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






31. 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






32. 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






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






34. Split to form several bulbs






35. Have two cotyledons that absorb the endosperm






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






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






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






39. Common passageway for both the reproductive and exretory systems






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






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






42. Regrowth of a lost or injured body part






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






44. 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






45. 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






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






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






48. Sporophyte generation is the dominant - familiar form






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






50. Union of gametes