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






2. 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






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






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






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






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






7. Part of embry that are seed leaves






8. Have two cotyledons that absorb the endosperm






9. Ex: estrogens and progesterone -synthesized by ovaries






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






11. Uncoiled DNA






12. 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






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






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






16. Diploid cells of spermatogonia






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






18. Specialized organs where gametes are produced






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






20. Have one cotyledon






21. Large cell containing most of the cytoplasm - RNA - organelles - and nutrients needed by a developing embryo






22. Undergoes disjunction






23. Undifferentiated tissues in plants






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






25. Surrounded by two layers of cells






26. 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






27. Sporophyte generation is the dominant - familiar form






28. Sperm production -occurs in the seminiferous tubules






29. Muscular chamber which is the site of fetal development






30. Produces monoploid spores that develop into pollen grains






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






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






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






34. 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






35. 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






36. Secretes estrogen and progesterone






37. 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






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






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






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






41. 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






42. Outer layer of oocyte cell membrane






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






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






45. Part of embryo that grows and feeds the embryo






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






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






48. Menstrual flow






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






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







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