Jamb 2006 Biology Past Questions And Answers
1
A population that doubles in size at constant intervals is an indication of
- A. sigmoid growth
- B. exponential growth
- C. population explosion
- D. rapid growth
2
Hassan and Hussain are identical twins but Hassan grows taller and fatter from Hussain. This is probably because?
- A. Hassain inherits genes for tallness and fattness from the father
- B. They have dissimilar genotypes
- C. Hussain is endowed with genes for shortness and thinness
- D. They are raised in different environment
3
A unique characteristics of the cervical vertebrate is the presence of
- A. large centrum
- B. long transverse processes
- C. zgapophysis
- D. vertebrartarial canal
4
Mammals are capable of producing hypertonic urine mainly because of re-absorption in the
- A. Bowmans capsule
- B. Urethra
- C. Ureter
- D. Loop of henle
5
The product of excretion common to the mammalian kidney, lung and skin is
- A. mineral salt
- B. carbon (IV) oxide
- C. water
- D. urea
6
An organism which exhibits extracellular digestion is
- A. spirogyra
- B. paramecium
- C. amoeba
- D. rhizopus
7
The two normal types of sex chromosomes are
- A. XXY and XYY
- B. XX and XYY
- C. XY and XXY
- D. XXand XY
8
The dominant phase in the life cycle of a bryophyte is the
- A. gametangium
- B. sporophyte
- C. gametophyte
- D. prothallus
9
Climax communities in a biotic succession are usually characterized by
- A. a constant change in the appearance of the communities
- B. different species that are constantly changing
- C. a stable composition of plant and animal species
- D. rapid changes in the plant and animal species
10
In rabbit the chamber of the heart that receives oxygenated blood from the lungs is the
- A. left ventrictle
- B. left auricle
- C. right ventricle
- D. right auricle