Biology Past Questions And Answers
The conditions that ensure successful exchange of gases in multicellular organisms include the following except
- A. concentration gradient across the respiratory surface
- B. concentration gradient across the respiratory surface B. presence of thin membrane as the respiratory surface
- C. last transportation of absorbed gases
- D. presence of small, dry surface area of the respiratory organ
Plants that show secondary growth are usually found among the
- A. thallophytes
- B. pteridophytes
- C. monocotyledons
- D. dicotyledons
(a)(i) Explain the term courtship behaviour in animals.
(ii) How does courtship aid reproduction in animals?
(b) Describe the process of fertilization in flowering plants.
View Discussion (0)WAEC 1994 THEORYThe human skin is regarded as a sense organ because it
- A. separates the body from the outside world
- B. protects the body from cold and heat
- C. regulates the water content of the body
- D. has nerve endings
An animal body that can be cut along its axis in any plane to give two identical parts is said to be
- A. radially symmetrical
- B. bilaterally symmetrical
- C. asymmetrical
- D. symmetrical
The part of the nervous system that interprets blinking of the eye is the
- A. spinal cord
- B. cerebrum
- C. hind brain
- D. olfactory lobe
Mucor and Spirogyra can be put in a group because they
- A) are unicellular
- B) have spores that are dispersed by wind
- C) can live independent lives
- D) reproduce sexually
Which of the following insects has an incomplete metamorphosis during its life cycle?
- A) Grasshopper
- B) Bee
- C) Mosquito
- D) House-fly
A state in Nigeria that is most susceptible to desert encroachment is
- A. Kwara
- B. Taraba
- C. Kaduna
- D. Katsina
The dominant phase in the life cycle of a fern is the?
- A. prothallus
- B. sporophyte
- C. antheridium
- D. gametophyte