Jamb 2010 Biology Past Questions And Answers
1
The activity of an organism which affects the survival of another organism in the same habitat constitutes?
- A. an edaphic factor
- B. an abiotic factor
- C. a biotic factor
- D. a physiographic factor
2
At what stage in the life history of a mammal is the sex of an individual set?
- A. at adolescence
- B. at puberty
- C. at birth
- D. at conception
3
The average number of individuals of a species per unit area of the habitat is the?
- A. population density
- B. population frequency
- C. population size
- D. population distribution
4
Thyroxine and adrenalin are examples of hormones which control?
- A. blood grouping
- B. tongue rolling
- C. behavioural patterns
- D. colour variation
5
Which of the following is true of the transverse section of a dicot stem?
- A. the xylem is more interiorly located than the phloem
- B. the cambium lies between the cortex and the vascular bundles
- C. the vascular bundles are randomly scattered within the cortex
- D. the epidemis is completely encircled by the cortex
6
The vector for yellow fever is?
- A. Aedes mosquito
- B. Anopheles mosquito
- C. tsetse fly
- D. blackfly
7
Which of the following is NOT a function of the nucleus of a cell?
- A. it translates genetic information for the manufacture of proteins
- B. it stores and carries hereditary information
- C. it is reservoir of energy for the cell
- D. it controls the life processes of the cell
8
The protozoan plasmodium falciparum is transmitted by?
- A. female Anopheles mosquitoes
- B. female Aedes mosquitoes
- C. female Culex mosquitoes
- D. Female blackfly
9
The blood component that has the greatest affinity for oxygen is the?
- A. lymphocytes
- B. leucocytes
- C. erythrocytes
- D. thrombocytes
10
The main distinguishing features between the soldier termite and other members of the caste are the?
- A. presence of wings, possession of a small head and large thorax
- B. presence of wings, possession of a large thorax and a small head
- C. absence of wings, possession of strong mandibles and a large head
- D. absence of wings,possession of big head and the absence of mandible