Biology Past Questions And Answers
The matured sex cell which takes part in sexual reproduction is referred to as
- A. gamete
- B. fetus
- C. embryo
- D. zygote
Which of the following stimuli is likely to elicit a nastic response in an organism?
- A. Wound lesion
- B. Light intensity
- C. Chemical substances
- D. Gravity
One major difference between plant and animals nutrition is the ability of plants to synthesize
- A. Food for plants and animals
- B. Water for plants
- C. Water for animals
- D. Food for plants only
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
Which of the following is the common to the mosquito, housefly and blackfly?
- A. they undergo complete metamorphosis
- B.. they are parasites of man
- C. their immature stages are aquatic
- D. their adults have two pairs of wings
Which of the following activities would revive the plant?
- A. Covering the plant with dark paper to prevent further water loss from its surfaces
- B. Leaving the plant to adapt to the condition
- C. Exposing the plant to higher concentration of oxygen
- D. Adding more water to the soil
A person with type O blood can donate to a patient with type A because the donor's blood
- A. lacks antigens
- B. lacks anti-A antibodies
- C. lacks anti-B antibodies
- D. has both anti-A and anti-B antibodies
Which of the following disease is caused by a bacterium?
- A. ringworm
- B. poliomyelitus
- C. syphilis
- D. malaria
Which of the following is not an essential nutrient for human?
- A) vitamin A
- B) lysine
- C) glucose
- D) calcium
If an organism has a diploid number of 36, what is its haploid number?
- A. 18
- B. 72
- C. 9
- D. 36