31. The natural dwelling place of an organism is called its
- A. ecological niche
- B. habitat
- C. population
- D. environment
32. Which of the following ecological factors will result in food shortage?
- A. Drought
- B. Low rate of reproduction
- C. Emigration
- D. Topography
33. Soil permeability refers to
- A. how easily water passes through the soil
- B. the proportion of air in the soil
- C. the proportion of water the soil holds
- D. how well water rises up the soil
34. Which of the following groups of organisms do not have members that can be called autotrophs?
- A. Protists
- B. Mosses
- C. Chlorophyta
- D. Fungi
35 Which of the following pyramids gives the most accurate picture of the relationships between at the various trophic levels in a food chain? A pyramid of
- A. numbers
- B. energy
- C. biomass
- D. size
36. Which of the following statements is not associated with pyramids of energy?
- A. Efficiency of energy transfer between trophic levels can be studied
- B. Comparisons of pyramids for different ecosystems can be made
- C. More accurate comparisons of trophic levels
- D. Representation of numbers of organisms at different trophic levels
37. Which of the following materials is not easily biodegradable?
- A. Polythene bag
- B. Cotton bag
- C. Hides and Skin bag
- D. Paper bag
38. Which of the following pairs of organisms is in a mutualistic relationship?
- A. Hydra and Sea anemone
- B. Hermit crab and Sea anemone
- C. Dodder plant and Cocoa plant
- D. Mistletoe and Kolanut
39. The establishment of game reserves and parks is a method of
- A. conserving natural resources
- B. cultivating game
- C. controlling pollution
- D. cultural awareness
40 Which of the following practices is not used in conserving water?
- A. Afforestation
- B. Damming
- C. Deforestation
- D. Reforestation
