Biology WAEC

What is the critical limiting factor for plants below the photic zone is an aquatic ecosystem?

A. Availability of nutrients B. Availability of water C. Intensity of light D. Carbon dioxide concentration Correct Answer: Option C…

4 years ago

Which of the following statements about ecosystems is false?

A. All the energy entering the ecosystem is passed on to decomposers B. The primary producers provide energy for herbivores…

4 years ago

Which of the following organisms is an endoparasite?

A. Mice B. Mosquito C. Ascaris D. Dodder Correct Answer: Option C C. Ascaris

4 years ago

An organism whose source of carbon is inorganic is likely to be a/an?

A. heterotrophic organism B. autotrophic organism C. symbiotic organism D. parasitic organism Correct Answer: Option B B. autotrophic organism

4 years ago

Pepsin is secreted as an inactive precursor called pepsinogen because?

A. pepsin as an enzyme is quickly destroyed by the alkaline food from the mouth B. all digestive enzymes pass…

4 years ago

Which of the following treatments would increase the rate of transpiration in a potted plant?

A. Placing it in a cold room B. Placing it under a fan in a room C. Putting it in…

4 years ago

The mesophyll layer of a leaf consists of?

A. wax and cutin B. cells with lignified walls C. irregularly shaped collenchyma cells. D. photosynthetic parenchyma cells. Correct Answer:…

4 years ago

Which of the following cycles involves the process of precipitation and transpiration?

A. Water cycle B. Carbon cycle C. Nitrogen cycle D. Oxygen cycle Correct Answer: Option A A. Water cycle

4 years ago

Which of the following processes removes carbon from the atmosphere?

A. Putrefaction B. Photosynthesis C. Volcanic eruption D. Burning of fuels Correct Answer: Option B B. Photosynthesis

4 years ago

A seed of a flowering plant can best be described as?

A. radicle and plumule B. the developed ovule C. the embryo and endosperm D. developed ovary Correct Answer: Option B…

4 years ago