WAEC Biology

OBJECTIVES 1. During sexual reproduction in Paramecium, how many times does the zygote divide to produce eight nuclei? A. 1. B. 2. C. 3.D. 4. 2. The dominant stage in the life cycle of a fern is the A. antheridium: B. gametophyte. C. prothalfus. D. sporophyte. 3. Some animals return…

OBJECTIVES 1. The major problem experienced by organisms living in small waterbodies is A. drying up. B. oxygen deficiency. C. scarcity of food. D. wave action. 2. Which of the following features is not an adaptation of plants to aquatic habitat? A. Breathing roots for entry of air. B. Flowers…

OBJECTIVES 1. Which of the following statements about the transfer of energy in an ecosystem is correct? A. Energy increases at higher trophic levels. B. More organisms can be supported at higher levels. C. There are fewer organisms at lower trophic level. D. Energy is lost at each trophic level.…

OBJECTIVES 1. A vaccine is introduced into a person's body to A. destroy all disease-causing organisms in the body. B. stimulate the body to produce antibodies. C. enhance the production of red blood cells. D. isolate disease-causing pathogens from the blood. 2. Many diseases caused by bacteria can be treated…

OBJECTIVES 1. The importance of practising crop-rotation in agriculture is to A. control soil erosion. B. maintain the fertility of the soil. C. improve the nutritional value of crops. D. ensure growth of cash crops. 2. The practice of warming soup regularly as it concerns food preservation is essentially to…

OBJECTIVES 1. The capillarity of a soil refers to A. the particle size of soil. B. how easily water passes through soil. C. how well water rises up in soil. D. proportion of water a soil holds. 2. Soil erosion could be prevented by A. flooding a farmland. B. cover…

OBJECTIVES 1. Plants with breathing roots are characteristic features of vegetation in A. Tropical grassland. B. temperate grassland. C. salt water swamp. D. tropical rain forest. 2. Most tropical plants shed their leaves during dry weather conditions in order to A. reduce their growth rate. B. conserve water. C. reduce…