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: 2005

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) Rickets is a common feature in young children lacking one of the following vitamins:

1. C
2. A
3. D
4. B
5. K

Study the diagram below (Figure 1) and answer question (ii) to (iv).

Fig. 1

(ii)The structure which is responsible for food storage is:

1. B
2. A
3. D
4. E
5. C

(iii)Vegetative propagation occurs due to the presence of structure:

1. B
2. A
3. D
4. E
5. C

(iv)Figure 1 above represents a:

1. rhizome 
2. stem tuber
3. root tuber
4. bulb 
5. stolon

(v)Which one of the following tissues is meristematic?

1. cornified layer of the skin 
2.  collenchyma
3. cambium 
4. sclerenchyma
5. xylem

(vi)The concept of good health implies . . . . . . . . health,

1. sexual, physical and mental
2. physical, mental and social
3. mental, sexual and physical
4. physical, mental and family
5. reproductive, social and family

(vii) Figure 2 shows a section of a villus. 

Which part is a lymphatic vessel?

Fig. 2

(viii) When red flowered pea plants crossed with white flowered pea plants, all the Fl generation had pink flowers. This is an example of:

1. Crossing over 
2. Mutation
3. Incomplete dominance
4. Recessiveness 
5. Inbreeding

(ix)The Figure below shows a section of a root tip.

Fig. 3

Which part of the root tip undergoes rapid cell division?

1. A
2. B
3. C
4. D
5. A and B

(x)Study the following sequence of organisms:

Grass → Rabbit  →  Wolves  →  Fleas

The sequence is an example of:

1. a food web 
2. a food chain
3. an ecosystem 
4. a pyramid 
5. a community