The adult form of iii is a vector of
- A. sleeping sickness
- B. river blindness
- C. cholera
- D. elephantiasis
An economic importance of the organism represented by IV is that
- A. it transmit water borne disease to humans
- B. it is destructive to farm crops
- C. its faeces pollutes drinkng water
- D. it helps in the control of mosquito larvae
Use the diagram above to answer this question.
The experimental set-up above is used to demonstrate the process of
- A. diffusion
- B. photosynthesis
- C. fermentation
- D. plasmolysis
Use the diagram above to answer this question.
The gas evolved in the process is
- A. carbon (IV) oxide
- B. nitrogen
- C. oxygen
- D. carbon (II) oxide
Use the diagram above to answer this question.
Which of the organisms represented are notable agricultural pests?
- A. ll and IV
- B. l and IV
- C. ll and lll
- D. l and lll
The wings of a bat and those of a bird are examples of
- A. convergent evolution
- B. continuous variation
- C. coevolution
- D. divergent evolution
The bright coloured eye spots on the wings of moth are an example of
- A. warning colouration
- B. disruptive colouration
- C. crypsis
- D. mimicry
The fallacy in Lamarck’s evolutionary theory was the assumption that
- A. traits are acquired through disuse of body parts
- B. acquried traits are heritable
- C. acquired traits are seldom formed
- D. traits are acquired through the use of body parts
During blood transfusion, agglutination may occur as a result of the reaction between
- A. contrasting antigens and antibodies
- B. two different antigens
- C. two different antibodies
- D. similar antigens and antibodies
The number of alleles controlling blood groups in humans
- A. 3
- B. 4
- C. 5
- D. 2
The crossing of individuals of the same species with different genetic characters is
- A. cross breeding
- B. polygenic inheritance
- C. non-disjunction
- D. inbreeding
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
- A. Variation
- B. Survival of the fittest
- C. Use and disuse
- D. Competition
If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of
- A. codominance
- B. incomplete dominance
- C. mutation
- D. linkage
Lack of space in a population could lead to an increase in
- A. water scarcity
- B. birth rate
- C. disease rate
- D. dought
The inheritable characters that are determined by a gene located on the X-chromosome is
- A. recessive
- B. sex-linked
- C. homozygous
- D. dominant
In which of the following biomes is the south western part of Nigeria located?
- A. Temperate forest
- B. Tropical rainforest
- C. Tropical woodland
- D. Desert
Millet , sorghum, maize and onions are common crops growth in Nigeria in the
- A. tropical rainforests
- B. sudan savanna
- C. montane forests
- D. sahel savanna
Which of the following groups of environmental factors are density-dependent?
- A. Food, salinity, accumulation of matabolites and light
- B. Temperature, salinity predation and disease
- C. Food predation, disease and accumulation of metabolites
- D. Temperature food disease and light
Drancunculiasis can be contacted through
- A. eating contaminated food
- B. drinking contaminated water
- C. bathing in contaminated water
- D. bites of blackfly
Habitats are generally classified into
- A. biotic and abiotic
- B. aquatic and terrestrial
- C. aboreal and marine biomes
- D. microhabitats and macrohabitats
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