Biology 2016 JAMB Past Questions
Biology 2016 JAMB Past Questions
1. Which of the following conditions is NOT necessary for photosynthesis to take place?
- A. ChlorophyII
- B. Light
- C. Carbon(II)oxide
- D. Carbon(IV)oxide
2.The insects in which the maxillae are modified into a long coiled proboscis is
- A. housefly
- B. butterfly
- C. mosquito
- D. grasshopper
3.When a cell is placed in solution and the size of the cell increases, the concentration of solution is said to be
- A. isotonic
- B. dilute
- C. hypotonic
- D. hypertonic
4.Which of the following plant hormone is responsible for ripening of fruits?
- A. Gibberellins
- B. Abscisic acid
- C. Ethylene
- D. Cytokinins
5.The ability of a living organism to detect and respond to changes in the environment is referred to as
- A. locomotion
- B. taxis
- C. irritability
- D. growth
6. An example of an endospermous seed is
- A. been seed
- B. cashew nut
- C. cotton seed
- D. maize grain
7.Which of the following theories was NOT considered by Darwin in his evolutionary theory?
- A. variation
- B. survival of the fitest
- C. use and disuse
- D. competition
8.Which of the following protects the essential parts of the flower at bud stage?
- A. Stamens
- B. Sepals
- C. Petals
- D. Carpels
9. which of the following is an agent of a sexually transmitted disease?
- A. Entamoeba histolytica
- B. Salmonella typhi
- C. Treponema pallidum
- D. Clostridium tetani
10.Which of the following animals has homodont dentition?
- A. Rat
- B. Man
- C. Lizard
- D. Pigeon
Correct Answer: Option C
11. The movement of blood between the heart and all other parts of the body besides the lung is known as
- A. systemic circulation
- B. closed circulatory system
- C. pulmonary circulation
- D. single circulation system
12. If the cross of a red-flowered plant with a white flowered plant produces a pink flowered plant, this is an example of
- A. codominance
- B. incomplete dominance
- C. mutation
- D. linkage
13. The largest amount of yolk is found in the egg of
- A. amphibians
- B. pisces
- C. repitles
- D. aves
14. Fibrinogen and prothrombin play important roles in the
- A. deamination of proteins
- B. clotting of blood
- C. detoxication of substances
- D. storage of vitamins
15. The pathogen that cause smallpox is
- A. picornavirus
- B. peramyxovirus
- C. herpesvirus
- D. poxvirus
16. The vector for the malaria parasite is a
- A. female edes mosquito
- B. female Anopheles mosquito
- C. female culex mosquito
- D. female culex mosquito
17. Which of the following pairs are social insects?
- A. Termite and locust
- B. Ants and wap
- C. Cockroach and bee
- D. Termite and bee
18.Which of the following is NOT a method of conserving wild life?
- A. Indiscriminate poaching
- B. Establishment of zoological gardens
- C. Enacting wildlife conservation laws
- D. Establishment of game reserves
19. The importance of the mouth-brooding behaviour in Tilapia is that it
- A. helps in keeping the young fish warm
- B. affords protection from predation for the young fish
- C. helps the fish to live in a social group
- D. provides regurgitated nourishment to the young fish
20.The type of asexual reproduction that is common to both Paramecium and Protists is
- A. fragmentation
- B. budding
- C. sporulation
- D. fission
21. The micro-organisms that causes Typhoid disease is
- A. trypanosome gambiense
- B. Salmonella typhi
- C. entamocbahistolytica
- D. plasmodium sp
22. A collection of population of all living organisms that exist in a habitat is referred to as
- A. niche
- B. ecosystem
- C. community
- D. environment
23. The theory of use and disuse of organs was promulgated by
- A. Alfred Wallace
- B. Charles Darwin
- C. Jean Lamarck
- D. Robert Hook
24. The theory of natural selection was postulated by
- A. Gregor Mendel
- B. Matthias Schleiden
- C. Charles Darwin
- D. Robert Hook
25.The movement response of a cockroach away from a light source is
- A. negative phototropism
- B. positive phototaxism
- C. negative phototropism
- D. postive phototropism
26.Which of the following can cause shrinkage of living cells?
- A. Deionized water
- B. Hypotonic solution
- C. Isotonic solution
- D. Hypertonic solution
27. The ability of chemelon to change its colour rapidly is an adaptation for
- A. obtaining food
- B. attraction mate
- C. communication
- D. escaping detection
28. The function of the red head in male Agama lizards is to
- A. scare other males from the territory
- B. warn predators of the distastefulness of the animal
- C. attract female lizards for mating purposes
- D. conceal and camouflage the animal from predators
29. The activity of ptyalin is likely to decrease with an increase in the concentration of
- A. oxygen
- B. starch
- C. protein
- D. acid
30. Seed plants are divided into
- A. monocoty ledons and dicotyledons
- B. tracheophytes and ferns
- C. angiosperms and gymnosperms
- D. thallophytes and bryophytes
31. The adaptive importance of the nuptial flight from termite colonies is to
- A. ensure cross-breeding between members of one colony and another
- B. disperse the reproductives in order to establish new colonies
- C. provide abundant food for birds and other animals during the early rains
- D. expel the reproductives so as to provide enough food for other members
32. The sequence of the one-way gaseous exchange mechanism in a fish is
- A. gills ⇢ operculum ⇢ mouth
- B. mouth ⇢ gills ⇢ operculum
- C. mouth ⇢ operculum ⇢ gills
- D. operculum ⇢ mouth ⇢ gills
33. In the nitrogen cycle, the nitrates in the soil are converted to atmospheric nitrogen by
- A. puterfying bacteria
- B. nitrogen-fixing bacteria
- C. nitrifying bacteria
- D. denitrifying bacteria
34. The relationship between a termite and the protozoam in its intestine is described as
- A. predation
- B. saproplytism
- C. symbiosis
- D. parasitism
35.Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
- A. liver of humans
- B. reticuloendothelial cells of humans
- C. Malphigian tubules of mosquito
- D. brain of humans
36.Which of the following organs regulates the levels of water. salts, hydrogen ions, and urea in the mammals?
- A. Kidney
- B. Colon
- C. Bladder
- D. Liver
37. The rate of transpiration is NOT affected by
- A. the weight of the stomata pores
- B. humidity
- C. temperature
- D. the size of the stomata pores
38.The crossing of individuals of the same species with different genetic characters is
- A. croos breeding
- B. polygenic inheritance
- C. non-disjunctin
- D. inbreeding
Correct Answer: Option A
39. The hereditary characters in plants and animals are located on the
- A. gene
- B. mucleus
- C. chromosome
- D. cell
40. The arrangement of ovules attached to the sides of a syncarpous ovary with a single chamber is referred to as
- A. free-central placentation
- B. axile placentation
- C. parietal placentation
- D. marginal placentation
41.When sickle cell carrier marries a normal woman, the probability of them having a normal offspring is
- A. 0.75
- B. 0.25
- C. 0.5
- D. .1
Explanation
A sickle cell carrier (AS) and a normal woman (AA), when crossed will yield:3 normal offsprings (AA) and 1 sickle cell carrier (AS).
Hence, the probability of a normal child =
=
42. In which of the following groups of vertebrates is parental care mostly exhibited?
- A. Aves
- B. Reptilia
- C. Amphibia
- D. Mammalia
43. An example of a non-bio degrable pollutants is
- A. dung
- B. bones
- C. ceramics
- D. woods
44. The bacteria that is found in the root nodules of leguminous plants is
- A. clostridium
- B. rhizobium
- C. nostoc
- D. azotobacter
45.Which of these organisms partly digest its food extracellularly?
- A. Housefly
- B. Cockroach
- C. Termite
- D. Mosquito
46. Strong short and concical beak to pick and crush seeds is an adaptive feature of
- A. duck
- B. owl
- C. weaver bird
- D. hawk
47.The path followed by air as it passes through the lungs in mammals is
- A. bronchi ⇢ trachea ⇢ alveoli ⇢ bronchioles
- B. bronchioles ⇢ alveoli ⇢ bronchi ⇢ trachea
- C. trachea ⇢ bronchi ⇢ bronchioles ⇢ alveoli
- D. trachea ⇢ bronchioles ⇢ bronchi ⇢alveoli
48. In which of the following species is the biomass of an individual the smallest?
- A. Tilapia sp
- B. Agama sp
- C. Bufo sp
- D. Spirogvra sp
49. The path followed by air as it passes through the lungs in mammals
- A. cochlea
- B. pinna
- C. perilymph
- D. vestibular system
50. The part of the mammalian ear responsible for the maintenance of balance is the
- A. cochlea
- B. pinna
- C. perilymph
- D. vestibular system
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