Home ยป Past Questions ยป Biology ยป Jamb ยป 2012 ยป Page 2
22

The abiotic factors that control human population include

  • A. disease and famine
  • B. space and rainfall
  • C. flooding and earthquake
  • D. temperature and disease
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23

The carrying capacity of a habitat is reached when the population growth begins to

  • A. increase slowly
  • B. increase exponentially
  • C. slow down
  • D. remain steady
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24

The most likely first colonizers of a bare rock are

  • A. mosses
  • B. ferns
  • C. lichen
  • D. fungi
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25

Which of the following animals can exist solely on the water they get from food and metabolic reactions?

  • A. forest arboreal dweller
  • B. Desert dwellers
  • C. forest-ground dweller
  • D. rainforest dwellers
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26

The presence of stilt roots, pneumatophores, sunken stomata and salt glands are adaptive features of plants found in the

  • A. tropical rainforest
  • B. mangrove swamps
  • C. gressland
  • D. montane forest
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27

Organisms living in an estuarine habitat are adapted to

  • A. withstand wide fluctuations in temperature
  • B. survive only in water with low salinity
  • C. withstand wide fluctuations in salinity
  • D. feed only on phytoplankton and dead organic matter
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28

Plants of temperate origin can be grown in tropical areas in the vegetation zones of the

  • A. rain forest
  • B. guinea savanna
  • C. sudan savanna
  • D. montane forest
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29

The water cycle is maintained mainly by

  • A. evaporation of water in the environment
  • B. evaporation and condensation of water in the environment
  • C. condensation of water in the environment
  • D. transpiration and respiration in plants
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30

The autonomic nervous system consists of neurons that control the

  • A. voluntary muscles
  • B. heart beat
  • C. tongue
  • D. hands
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31

Plant growth can be artificially stimulated by the addition of

  • A. gibberellin
  • B. kinin
  • C. abscisic acid
  • D. ethylene
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32

An example of a fruit that develops from a single carpel is

  • A. okro
  • B. tomato
  • C. bean
  • D. orange
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33

Which of the following is involved in secondary thickening in plants?

  • A. Collenchyma and xylem cells
  • B. Vascular cambium
  • C. Cork cambium and sclerenchyma
  • D. Vascular cambium and cork cambium
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34

In the kidney of mammals, the site of ultrafiltration is the

  • A. uriniferous tubule
  • B. Bowman's capsule
  • C. loop of Henle
  • D. renal tubule
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35

Which of the following is a polysaccharide?

  • A. Glucose
  • B. Sucrose
  • C. Maltose
  • D. Cellulose
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36

A function of the hydrochloric acid produced in the human stomach during digestion is to

  • A. neutralise the effect of bile
  • B. coagulate milk protein and emulsify fats
  • C. stop the action of ptyalin
  • D. break up food into smaller particles
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37

Which of the following organisms is both parasitic and autotrophic?

  • A. Sundew
  • B. Loranthus
  • C. Rhizopus
  • D. Tapeworm
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38

In plants which of the following is required in minute quantities for growth?

  • A. Copper
  • B. Potassium
  • C. Phosphorus
  • D. Sodium
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39

In the mammalian male reproductive system, the part that serves as a passage for both urine and semen is the

  • A. urethra
  • B. urter
  • C. bladder
  • D. seminal vesicle
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40

Which of the following plant structures lacks a waterproof cuticle?

  • A. leaf
  • B. stem
  • C. root
  • D. shoot
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41

Countershading is an adaptive feature that enables animals to

  • A. fight enemies
  • B. remain undetected
  • C. warn enemies
  • D. attract mates
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42

The feature that links birds to reptiles in evolution is the possession of

  • A. feathers
  • B. beak
  • C. skeleton
  • D. scales
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