Which of the following is the correct sequence for energy transfer and nutrient cycling among living things
in an ecosystem?
- A. Consumers → producers → decomposers
- B. Producers → decomposers → consumers
- C. Decomposers → producers → consumers
- D. Producers → consumers → decomposers
- E. Consumers → decomposers → producers
Which of the following organisms will have the highest biomass?
- A. Small fish
- B. Tadpole
- C. Hawk
- D. Phytoplankton
- E. Big fish
The maximum and minimum thermometer is used to measure
- A. light intensity
- B. highest and lowest temperature of the day
- C. atmospheric pressure
- D. highest and lowest amount of rainfall in a month
- E. soil temperature
Which of the following is an abiotic factor?
- A. Predation
- B. Rainfall
- C. Cropping
- D. Grazing
- E. Migration
Which of the following activities is not necessary in population sampling?
- A. Selecting the habitat
- B. Dividing the selected habitat into portions
- C. Throwing the quadrat randomly
- D. Counting the number of organisms
- E. Feeding the organisms
Northern Guinea savanna is associated with
- A. abundant rainfall
- B. abundant trees and shrubs
- C. soil with very little plant cover
- D. abundant grasses
- E. high humidity
In which of these forms is carbohydrate stored in yam?
- A. Glucose
- B. Maltose
- C. Starch
- D. Glycogen
- E. Cellulose
Which gas will pass into the test tube labelled II from I?
- A. Carbon monoxide
- B. Carbon dioxide
- C. Oxygen
- D. Ammonia
- E. Nitrogen
What will be the colour of the solution in the test tube labelled II at
the end of the experiment?
- A. Pink
- B. Yellow
- C. Milky
- D. Reddish white
- E. Blue-black
The set- up above is used to demonstrate
- A. plasmolysis
- B. osmosis
- C. suction pressure
- D. fermentation
- E. diffusion
Which of the following parts of the tooth is first damaged during dental decay?
- A. Cement
- B. Enamel
- C. Dentine
- D. Root
- E. Gum
The essential parts of a flower are
- A. petals and sepals
- B. anther and filament
- C. stigma and style
- D. androecium and gynoecium
- E. petals and gynoecium
Flatworms are classified as
- A. Platyhelminthes
- B. coelenlerata
- C. annelida
- D. nematoda
- E. arthropoda
The association between protozoa and termites is an example of
- A. symbiosis
- B. parasitism
- C. predation
- D. saprophytism
- E. epiphytism
The reduction of nitrates to gaseous nitrogen is
- A. nitrogen fixing
- B. nitrogen cycle
- C. ammonification
- D. putrefaction
- E. denitrification
Which of the following organisms is viviparous?
- A. Tapeworm
- B. Snail
- C. Sheep
- D. Grasshopper
- E. Lizard
The above defect is corrected by using a?
- A. concave lens
- B. converging lens
- C. cylindrical lens
- D. bi-focal lens
- E. tinted lens
The eye defect represented in the diagram is?
- A. myopia
- B. hypermetropia
- C. presbyopia
- D. astigmatism
- E. conjuctivitis
Which of the following structures transports water from the roots to the leaves?
- A. Phloem
- B. Cambium
- C. Pericycle
- D. Xylem
- E. Cortex
Which of the following is not a characteristic of wind dispersed fruits and seeds?
- A. Light weight
- B. Wing
- C. Floss
- D. Stickyjuice
- E. Parachute
Which of the following fruits is a schizocarp?
- A. Groundnut
- B. Desmodium
- C. crotalaria
- D. Cashew
- E. Pride of Barbados