Jamb 1999 Biology Past Questions And Answers
Vaccination is carried out in order to
- A. check the production of poison
- B. increase the activity of white blood cells
- C. increase the number of red blood cells
- D. stimulate the production of antibodies
A soil consisting of alumina and iron (II)oxide is known as
- A. loamy soil
- B. clayey soil
- C. laterite
- D. podzol
From evolutionary standpoint , the older a fossil-bearing rocks is, the more likely it is to contain
- A. aves as opposed to amphibians
- B. invertebrates as opposed to vertebrates
- C. angiosperms as opposed to algae
- D. vertebrates as opposed to invertebrates
In which of the following organisms does each cell combine the function of nutrition, reproduction and growth?
- A. Rhizophus
- B. Dryopteris
- C. Brachymenium
- D. Spirogyra
The sign + is used to indicate an association where an organism gains, while 0 is used where an organism is unaffected. An association indicated as +0 is known as
- A. predation
- B. commensalism
- C. parasitism
- D. competition
The group of Arthropods that has no antennae is the
- A. Crustacea
- B. Chilpoda
- C. Arachnida
- D. Diplopoda
If the offspring of a cross between a brown mouse (bb) and a black mouse (BB) are allowed to interbreed, how many different genotypes would result?
- A. 2
- B. 3
- C. 4
- D. 5
The correct sequence for the perception of smell in mammals is
- A. chemicals → olfactory nerve endings → brain
- B. dissolved chemicals → nasal sensory cell → brain
- C. chemicals → mucus membrane → sensory cells→ brain
- D. dissolved chemicals → sensory cells → olfactory nerve → brain
Mammals acclimatize to reduced oxygen content at high altitudes by
- A. the stimulation of marrow to reduce the amount of erythrocytes produced
- B. increasing the rate at which erythrocytes are destroyed
- C. the stimulation of marrow to produce more erythrocytes
- D. increasing the break down of the protein portion of the erythrocytes
Which of the following characterizes the white mangrove?
- A. Prop roots
- B. Buttress roots
- C. Breathing roots
- D. Stilt roots