A flowering plant having both the male and female flowers on the same plant is said to be
- A. Regular
- B. Irregular
- C. Monoecious
- D. Dioecious
Thunderstorm can be beneficial to plants because it
- A. adds line to the soil
- B. kills the pest that attacks crops
- C. destroys some of the major crops
- D. adds nitrate to the soil
The study which involves the inter-relationship between groups of organisms or species of organisms living together in an area is
- A. Autecology
- B. Ecological niche
- C. Synecology
- D. Ecosphere
Which of the following organs can be considered vestigial in humans but functional in other mammals
- A. The liver
- B. Appendix
- C. Rectum
- D. Stomach
The basis of growth involves the following processes except
- A. Cell reduction
- B. Cell division
- C. Cell enlargement
- D. Cell differentiation
In the theory of use and disuse Lamarck proposed that evolution occurred because of the following except
- A. There is natural selection of offspring
- B. There is great changes in the environment
- C. Organism develop specialised characters
- D. The characters are inheritable
In an ecosystem, the organism which changes light energy into stored chemical energy is the
- A. Consumer
- B. Producer
- C. Decomposer
- D. Carnivore
Which of the following statement is correct about Southern Guinea Savanna in Nigeria
- A. It is the largest of all the biotic community in Nigeria
- B. It has no plants species
- C. It has plants species like Iroko, Opepe etc
- D. It has no trees
What type of vertebrate assists in breathing alongside with the ribs?
- A. Sacral
- B. Caudal
- C. Thoracic
- D. Lumber
Which of the following factors is not considered in a terrestial habitat?
- A. Temperature
- B. Sunlight
- C. Humidity
- D. Turbidity
One of the following is an effect of clay soil on vegetation
- A. Supports luxuriant vegetation such as forest
- B. Supports scanty vegetation
- C. Does not support light vegetation
- D. Support arid vegetation
Which of the following is an example of continous variation?
- A. Human blood groups
- B. Sex difference in human
- C. Haemoglobin types
- D. Height in humans
The following processes are involved during expiration in man except
- A. The inter costal muscles relax
- B. The thoracic cavity first increases in volume
- C. The sternum moves inward
- D. The ribs are moved downwards and inwards
Ecology is best defined as the study of
- A. The characteristics of an environment
- B. The inter-relationship between living organisms and the environment
- C. Living organisms in a particular area
- D. The habitats and wild life
One of the following is not the theory of natural selection stated by Charles Dawin
- A. Characteristics acquired through use or disuse are transmitted offspring
- B. Variations appear by themselves in a population
- C. Heredity variations are transmitted to offspring
- D. Species that are the fittest for the environment contribute more offsprings to the next needs of the generation
The glomerular filtrate contains the following except
- A. Water
- B. Urea
- C. Blood Corpuscles
- D. Glucose
Which of the following statement describes an autonomic nervous system
- A. It always stimulates effectors
- B. Activities are voluntary
- C. It dials with external stimuli and their responses
- D. It affects glands, cardia muscles and smooth muscles
Which of the following controls all voluntary actions
- A. Olfactory lobes
- B. Cerebrum
- C. Hypothalamus
- D. Pons varolii
Which of the following will have the least effect on the rate of change of the numbers in a population
- A. Mutation
- B. Food Supply
- C. Disease
- D. Predation
The association between two organisms living together in which only one benefits from the association while the other is neither benefited nor harmed is
- A. Predation
- B. Competition
- C. Commensalism
- D. Dispersal
Viruses are pathogens of the following diseases except
- A. Tuberculosis
- B. Measles
- C. Small pox
- D. Poliomyelitis