THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL OF TANZANIA CERTIFICATE OF SECONDARY EDUCATION EXAMINATION

BIOLOGY

(For Both School and Private Candidates)

Time: 3 Hours Year: 2009

SECTION A

1. For each of the items (i) — (x) choose the correct answer from among the given alternatives and write its letter beside the item number.

(i)The elements carbon, nitrogen, oxygen and hydrogen would be found in:

1. Amino acids
2. Nitrates
3. Fats
4. Starch
5. Vitamins

(ii)Which of the following are parasitic eukaryotic organisms?

1. Amoeba and paramecium
2. Euglena and green algae
3. Trypanosome and plasmodium
4. Brown algae and amoeba
5. Plasmodium and amoeba

(iii)The outer most living structure in plant cells is the:

1. Cell wall
2. Cytoplasm
3. Cell membrane
4. Nuclear membrane
5. Ectoplasm

(iv)The part of cassava plant which is modified for food storage is:

1. an underground stem
2. an underground root
3. a corn
4. a prop root
5. an underground stalk

(v)The phylum chordate includes all animals that have:

1. Mammary glands
2. Post anal tail 
3. a backbone
4. Scales
5. Warm dry skin

(vi)Which of the following soil types has the highest water holding capacity'

1. Sandy soil
2. Loamy soil
3. Clay soil
4. Silty soil
5. Sandy loam soil

(vii)The human body can make one o€the following vitamins for itself:

1. Vitamin A
2. Vitamin B
3. Vitamin K
4. Vitamin D
5. Vitamin E

(viii) Examples of diseases caused by bacteria are:

1. Tuberculosis, cholera and gonorrhea
2. Malaria, bilharzias and cancer
3. Elephantiasis, AIDS and sleeping sickness
4. Measles, amoebic dysentery and chickenpox
5. Common cold, Typhoid and Cholera

(ix)A colour blind woman marries a man with normal vision. What percentage of colour blind and normal children would be expected from such a marriage? 

1. 100% colour blind
2. 75% colour blind and 25% normal
3. 50% colour blind and 50% normal 
4. 25% colour blind and 75% normal
5. 100% normal

(x) In a motor accident, the bus driver found that he could hardly maintain his body equilibrium. Which of the structures was damaged?

1. Semi circular canals
2. The medulla oblongata
3. Pituitary gland
4. The cerebellum
5. The cochlea