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






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






3. 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






4. Caplike structure - derived from the Golgi apparatus - develops over the anterior half of the head -contains enzymes needed to penetrate the tough outer covering of the ovum






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






6. 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






7. Have two cotyledons that absorb the endosperm






8. Part of embryo that grows and feeds the embryo






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






10. Eggs






11. Inner layer of oocyte cell membrane






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






13. 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






14. Two haploid cells yielded from meiotic division of primary spermatocytes






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






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






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






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






19. Chromatin condenses into chromosomes - the spindle apparatus forms - and the nucleoli and nuclear membrane disappear






20. Specialized organs where gametes are produced






21. Nuclear division and followed by cell division






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






23. 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






24. 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






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






26. Egg






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






28. 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






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






30. 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






31. Female gonads that produce oocytes






32. Result when a single zygote splits into two embryos






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






34. 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






35. 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






36. 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






37. Released from the ovary into the abdominal cavity and drawn into the nearby oviduct






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






39. Have one cotyledon






40. Cell division that follows karyokinesis






41. (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






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






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






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






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






46. Secretes estrogen and progesterone






47. The spindle apparatus disappears. A nuclear membrane forms around each set of newly formed chromosomes. Thus - each nucleus contains the same number of chromosomes (the diploid number 2n) as the original or parent nucleus. The chromosomes uncoil - re






48. Male gonads - produce sperm in the tightly coiled seminiferous tubules






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






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