Biology WAEC

The entire habits and habitat of an organism can be described as its?

A. ecological community B. ecological niche C. habitat factor D. biotic factor E. abiotic factor Correct Answer: Option B -…

4 years ago

Which of the following processes is not due to interaction between the biotic and abiotic components of an ecosystem?

A. Soil nutrient depletion B. Condensation C. Decomposition D. Osmosis E. Photosynthesis Correct Answer: Option D - Osmosis

4 years ago

Hydra captures small crustaceans by means of?

A. pseudopodia B. musculo-epithelial cells C. tentacles D. enteron E. ectoderm Correct Answer: Option C - tentacles

4 years ago

Which of the following is responsible for the conversion of nitrites to nitrates in the nitrogen cycle?

A. Denitrifying bacteria B. Nitrifying bacteria C. Lightening D. Fungi E. Brown algae Correct Answer: Option B - Nitrifying bacteria

4 years ago

In a water culture experiment, the culture solution in a transparent beaker turned green. What precaution should have been taken to prevent the culture solution from turning green?

A. Changing the culture solution regularly B. Increasing the number of times the culture is aerated C. Covering the transparent…

4 years ago

In grasshopper/cockroach digestion starts from the?

A. oesophagus B. crop C. gizzard D. midgut E. mouth Correct Answer: Option E - mouth

4 years ago

Which of the following pairs consists of gametes?

A. Ova and spermatozoa B. Spores and sporangium C. Flowers and pollen grains D. Testes and ovaries E. Gametophyte and…

4 years ago

The most sensitive part of the retina is called?

A. blindspot B. conjuctiva C. fovea centralis D. choroid coat E. sclerotic coat Correct Answer: Option C - fovea centralis

4 years ago

Which of the following is the effect of continuous tillage on an ecological system?

A. Addition of more. humus to the soil B. Decrease in productivity C. Increase in yield D. Improved fertility E.…

4 years ago

The maintenance of a constant internal environment of an organism is known as?

A. homeostasis B. homeorhesis C. turgidity D. homoiothermy E. diuresis Correct Answer: Option A - homeostasis

4 years ago