Which of the following agents is responsible for the dispersal of the seed shown above?
- A. man
- B. Water
- C. Wind
- D. Explosive mechanism
- E. Animal
Which of the following relationships illustrates competition?
- A. Cattle egret moving along with cattle
- B. Goats and cows grazing on a small grass lawn
- C. Mosses succeeding lichens in a rocky terrain
- D. Red mangrove swamp dying and replaced by white mangrove
- E. Forest trees, shrubs and grasses replacing white mangrove in a swamp
Which of the following represents the correct order in a possible food chain?
- A. Crustacean -> diatom -> fish -> man
- B. Fish -> crustacean -> man -> diatom
- C. Man -> fish -> crustacean -> diatom
- D. Diatom -> crustacean -> fish -> man
- E. Man -> diatom -> fish -> crustacean
Which of the following performs the same function as the contractile vacuole of a unicellular organism?
- A. Kidney
- B. Alimentary canal
- C. Liver
- D. Pancreas
- E. Bladder
The morphological, physiological and behavioural characteristics which enable an organism to survive in
its environment is called
- A. heredity
- B. ecology
- C. competition
- D. adaptation
- E. variation
Which of the following can cause desert encroachment?
- A. Afforestation
- B. Irrigation
- C. Planting of trees
- D. Establishment of game reserve
- E. Overgrazing
The branch of science which deals with resemblances, origin and expression of biological variations is
called
- A. embryology
- B. ecology
- C. entomology
- D. genetics
- E. taxonomy
Which of the following blood group(s) is/are the universal donor(s)
- A. O
- B. A
- C. B
- D. AB
- E. AB and O
Which of the following is not required for primary production to occur in plants?
- A. Chlorophyl
- B. Sugar
- C. Water
- D. Carbon dioxide
- E. Solar energy
Which of the following measures does not ensure conservation?
- A. Establishing forest and game reserves
- B. Encouraging people to plant trees
- C. Founding societies that promote conservation
- D. Enacting conservation laws and bye-laws
- E. Enclosing fishes in ponds where they will not be stolen
All the following can illustrate the dynamic nature of the ecosystem except
- A. nitrogen cycle
- B. carbon cycle
- C. water cycle
- D. nutrient cycle
- E. locomotion in organisms
Which of the following organisms exists as a filament?
- A. Euglena
- B. Amoeba
- C. Volvox
- D. paramecium
- E. Spirogyra
In which of the following is a cellulose cell wall present
- A. Amoeba
- B. Mammalian white blood corpuscle
- C. spirogyra
- D. paramecium
- E. parasitic worms
Which of the following actions is not an example of a simple reflex action?
- A. Knee jerk
- B. Blinking of the eye
- C. Withdrawal of hand from hot object
- D. Reading a book
- E. Contraction of the iris
Conventional method of sewage disposal involves all the following except defaecating
- A. into pit latrines
- B. in open fields
- C. into cesspit
- D. into bucket latrine
- E. into water home sewage system
The long and sharp claws in the font labelled ll show that the bird uses them to?
- A. hold onto its prey
- B. paddle in water
- C. glide in the alt
- D. scratch the earth for worms
- E. burrow into the soil
The foot labelled III is strong and has blunt claws
on its digits, This implies that the bird
- A. is a scavenger
- B. is a bird of prey
- C. is a marine bird
- D. uses the foot to scratch the soil
- E. uses the foot to supplement wing action in flight
What is the foot labelled I adapted to?
- A. Feeding on flesh
- B. Eating grains
- C. Swimming in water
- D. Perching on trees
- E. Catching insects in flight
The process in which insects undergo conspicuous changes in form and appearance during development
is known as
- A. ecdysis
- B. metamorphosis
- C. aestivation
- D. migration
- E. hibernation
The process by which plants manufacture food from carbondioxide and water, using energy from the sun is
termed
- A. chemosynthesis
- B. photosynthesis
- C. autotrophism
- D. heterotrophism
- E. transpiration
The two important physical processes involved in the absorption and transport of materials in plants are
- A. diffusion and plasmolysis
- B. cohesion and adhesion
- C. flaccidity and turgidity
- D. osmosis and diffusion
- E. plasmolysis and capillarity