Biology Past Questions And Answers
Two tall plants were crossed and all the F1 plants were tall. when the F1 plants were selfed, some of the F2 plants were tall while others were short what are the possible genotypes of the original plants ?
- A. Tt and tt
- B. TT and TT
- C. tt and tt
- D. TT and Tt
A population is defined as a collection of similar organism that
- A. behave in the same way
- B. interbreed freely
- C. are found in the same habitat
- D. eat the same food
Which of the following vertebrates has the most simple structured heart
- A. reptile
- B. fish
- C. mammal
- D. amphibian
What type of fruit is a mango fruit?
- A) Berry
- B) Hesperidium
- C) Drupe
- D) Nut
Filaments of Spirogyra placed in a beaker of water in a dark cupboard died because
- A. the filaments could not photosynthesize
- B. conjugation could not take place
- C. the temperature was too high
- D. the plant was overflooded
The phloem parenchyma is sometimes used for
- A. food storage
- B. supporting the stem
- C. production of the sieve tube
- D. transporting water
Which of the following organisms causes syphilis?
- A. Mycobacterium tuberculosis
- B. Bordetella pertusis
- C. Treponema pallidlum
- D. Clostridium tetani
(a) What is a hormone?
(b) Outline the role played by adrenaline in an emergency situation.
(c) In a tabular form, list five differences between hormonal co-ordination and nervous co-ordination.
(d) Name three animal hormones and two plant hormones.
View Discussion (0)WAEC 2006 THEORYWhich of the following diseases results from the deficiency of insulin?
- A. Cretinism
- B. Goitre
- C. Beri-beri
- D. Diabetes
The similarity among organisms belonging to the same group will be least within each
- A. family
- B. order
- C. kingdom
- D. species