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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. Regrowth of a lost or injured body part






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






3. 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






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






5. Muscular chamber which is the site of fetal development






6. Uncoiled DNA






7. 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






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






9. Inner layer of oocyte cell membrane






10. Part of embry that are seed leaves






11. Specialized sex cells






12. 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






13. Daughter cells of unequal size produced from one primary oocyte per month completes meiosis I -expelled from the follicle during ovulation






14. Nuclear membrane forms around each new nucleus -at this point - each chromosome still consists of sister chromatids joined at the centromere






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






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






17. Part of embryo that grows and feeds the embryo






18. Differs from asexual reproduction in that there are two parents involved and the end result is a geneticaly unique offspring -fusion of two gametes






19. 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






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






21. 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






22. 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






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






24. 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






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






26. (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






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






28. 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






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






30. Located on scrotum -site for testosterone






31. 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






32. 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






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






34. Have two cotyledons that absorb the endosperm






35. Egg






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






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






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






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






40. 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






41. Surrounded by two layers of cells






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






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






44. Split to form several bulbs






45. Nuclear division and followed by cell division






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






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






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






49. Undergoes disjunction






50. Produced when each meiotic division -rapidly degenerate