Welcome to biology afns test 5, specially developed for candidates preparing for the Armed Forces Nursing Services (AFNS) initial academic entrance test. This quiz covers key FSc Biology topics frequently featured in military entry exams.
Results
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#1. Progesterone hormone is active during.
#2. Acrosome of sperm is formed from.
#3. The number of chromosomes in a mature gamete gets halved during.
#4. In which phase of cell division is oocyte arrested.
#5. 100 eggs and 100 sperms can be produced form …… And ……….. meiotic divisions respectively.
#6. Rete testis opens to.
#7. Major part of semen is secreted by.
#8. The common duct formed by the union of vas deferens and duct from seminal vesicle is.
#9. Which gland in mammal makes alkaline secretion for lubrication.
#10. Seminal plasma contains the secretions of.
#11. Which is the correct sequence of layers in the mammalian egg from outside to inside.
#12. Which of the following hormones is active cycle.
#13. Which of the following is an example of class by bivalvia.
#14. Radula is characteristic feature of.
#15. A hydrostatic skeleton is.
#16. Nephridia are the excretory organs of members of which phylum.
#17. Transfer of sperms into female reproductive system is the function of:
#18. All of the following are exocrine in nature, except:
#19. Coelom that develops from the archenteron as outpouching is.
#20. Salamander belongs to which of the following class.
#21. Which among the following is a diploblastic organism.
#22. Which of the following is placenta mammal.
#23. Each testis contains.
#24. Highly convoluted part of male reproductive system:
#25. All of the following structures are paired, except:
#26. In arthropodes, body cavity is in the form of.
#27. Water vascular system is a unique and complex system specially present in.
#28. Round worms belong to which phylum.
#29. Cray fish is a/an.
#30. Tissue are not found in the following animal.
#31. In the course of evolution the true coelom appeared first in.
#32. Anus develops first in the embryo and mouth is formed later.
#33. Schizocoelom is found in
#34. Metamerism is conspicuous in.
#35. Male sexual maturity at the time of puberty is under the influence of:
#36. Spermatogenesis starts:
#37. Cell formed as a result of meiosis-I:
#38. In which phylum blood pigment is haemocyanin.
#39. Animals devoid of respiratory excretory and circulatory organs are.
#40. All of the following cells are haploid, except:
#41. Which is not related to oviduct?
#42. Layer of uterine wall receptive for oxytocin:
#43. Which of the following is the correct sequence of order of number of species.
#44. All flatworms differ from all roundworms in having.
#45. Which of the following characteristic features always holds true for the corresponding group of animals.
#46. Reproductively humans are:
#47. All of the following are accessory ducts of male reproductive system, except:
#48. Which one of the following is not a part of human reproductive system:
#49. Sharks, rays and skates are included in:
#50. Respiration in amphibians takes place by:
#51. Which of the following amphibians is legless?
#52. Which of the following are considered to be the ancestors of amphibians?
#53. Amnion for the first time developed in:
#54. First successful terrestrial group is:
#55. The most efficient respiratory system is found in:
#56. Which of the following is the voice box in birds?
#57. Monkey, apes and other primates are:
#58. The brain is most developed in:
#59. The antigen-antibody complexes formed in the body are taken up by:
#60. Anti-venom serum is used to induce:
#61. Type of immunity which can be produced by introducing antigens in the body is called:
#62. Pick up the incorrect statement:
#63. Which antigen will bind to a particular antibody is determined by:
#64. The serum containing __________ is called antiserum.
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BIOLOGY TEST 5
Welcome to biology afns test 5, specially developed for candidates preparing for the Armed Forces Nursing Services (AFNS) initial academic entrance test. This quiz covers key FSc Biology topics frequently featured in military entry exams.
Key Topics Covered in Biology AFNS Test 5
To achieve high marks in your AFNS computer-based test, review these crucial biological domains:
- Genetics & Molecular Biology: DNA replication, RNA transcription, genetic code, and inheritance patterns.
- Biotechnology & Applications: Recombinant DNA technology, PCR, vectors, and medical applications in modern biology.
- Evolution & Taxonomy: Natural selection mechanisms, evolutionary evidence, and kingdom classification.
- Human Physiology: Nervous system, reflex arcs, brain functions, and chemical coordination via hormones.
Study Tips for Clearing Test 5
- Focus on Core Definitions: Re-read key textbook terminology from 1st and 2nd-year FSc Biology.
- Review Missed MCQs: Analyze your incorrect attempts after finishing the test to identify topics that need quick revision.
- Pace Yourself: Practice answering each question promptly to build speed and accuracy for exam day.
Useful Resources & Next Steps
- Next Quiz: Move forward to practice Biology AFNS Test 6.
- Main Hub: Return to All AFNS Biology Practice Quizzes to attempt tests in sequence.
- Official Information: For official entry test schedules and registration guidelines, visit the Join Pak Army Official Website.
General Biology Quiz 5: Ecology, Ecosystems & Evolutionary Theory
Ecology explores the interactions between living organisms and their abiotic environment, while evolutionary biology explains how species adapt and diversify over time. Understanding ecological pyramids, food webs, and natural selection principles is vital for biology entry test candidates. Biology Quiz 5 evaluates these core concepts.
1. Ecosystem Hierarchy & Trophic Levels
An ecosystem consists of biological communities interacting with physical environmental factors. Ecological organization progresses hierarchically: Organism ➔ Population ➔ Community ➔ Ecosystem ➔ Biome ➔ Biosphere.
Energy flows directionally through ecosystem trophic levels, from primary producers to apex consumers:
- Primary Producers (Autotrophs): Plants, algae, and cyanobacteria that convert solar energy into chemical food through photosynthesis.
- Primary Consumers (Herbivores): Organisms that feed directly on primary producers (e.g., rabbits, zooplankton).
- Secondary & Tertiary Consumers (Carnivores/Omnivores): Predators that feed on primary or secondary consumers.
- Decomposers (Saprotrophs): Fungi and bacteria that decompose organic waste, recycling nutrients back into soil.
According to Lindeman’s 10% Energy Transfer Law, only approximately 10% of energy is transferred from one trophic level to the next, while 90% is lost as metabolic heat during respiration.
2. Symbiotic Relationships in Nature
Symbiosis describes close, long-term biological interactions between two different biological species. Major categories tested in ecology quizzes include:
- Mutualism (+/+): Both interacting species benefit from the relationship (e.g., nitrogen-fixing Rhizobium bacteria in legume root nodules).
- Commensalism (+/0): One species benefits while the other remains unaffected (e.g., epiphytic orchids growing on tall trees for sunlight).
- Parasitism (+/-): The parasite benefits at the host’s expense, deriving nutrients while causing harm (e.g., Plasmodium causing malaria in human red blood cells).
3. Evolutionary Theory & Natural Selection
Charles Darwin formulated the theory of evolution by natural selection. Evolution is defined as changes in genetic allele frequencies within a population over successive generations. Key mechanisms driving evolution include:
- Natural Selection: Organisms with favorable traits adapted to their environment exhibit higher survival and reproductive rates (“survival of the fittest”).
- Genetic Drift: Random fluctuations in allele frequencies within small populations due to chance events (e.g., bottleneck effect, founder effect).
- Gene Flow: Transfer of genetic alleles between populations via migration.
4. Evidence Supporting Evolutionary Change
Evolutionary relationships are supported by evidence from multiple scientific disciplines:
- Homologous Structures: Anatomical structures sharing a common evolutionary origin but serving different functions (e.g., a human arm, bat wing, and whale flipper).
- Analogous Structures: Structures serving similar functions in unrelated species due to convergent evolution (e.g., bird wings and butterfly wings).
- Vestigial Structures: Remnants of organs that served important functions in ancestors but have lost primary function (e.g., human appendix).
5. Preparation Guidance for Biology Quiz 5
To achieve high marks in Biology Quiz 5, review ecological pyramids, nutrient cycles (carbon and nitrogen cycles), species interaction types, and natural selection mechanisms.