DSEE
Biology · Paper 2B · 2007
3 questions 🇹🇿 NECTA ✓ Official NECTA answers
DSEE
🇹🇿 NECTA
✓ Official NECTA answers
Biology · Paper 2B · 2007
3 questions
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200 TZS
3-hour timed simulation · auto-graded · counts toward ranking
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Questions (3)
Section A
1.
30 marks
Dissect specimen M to display its reproductive system.
(a(i))
Draw a well-labelled diagram showing at least four parts of the reproductive system.
10 mk
(a(ii))
Indicate the position of the kidneys and oviducts/testes.
5 mk
(b(i))
Identify the organ for gamete production.
2 mk
(b(ii))
Which organ temporarily stores gametes?
2 mk
(b(iii)
Name the organ used to transport gametes.
2 mk
(c(i))
What is the consequence of cutting the anterior abdominal vein?
3 mk
(c(ii))
Why is water added during dissection? Give two points.
6 mk
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Section B
2.
10 marks
You are provided with solution Q.
(a(i))
Perform food tests using the provided reagents.
0 mk
(a(ii))
Complete the following table:
4 mk
(b(i))
State two food items that can give rise to such a solution.
2 mk
(b(ii))
Name the first site of digestion, the juice involved, and the end product.
3 mk
(c(i))
Mention three roles of the identified food substances.
3 mk
(c(ii))
State one negative health effect of lacking this food substance.
1 mk
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Section C
3.
10 marks
Observe specimens C, D and E.
(a(i))
List three differences between specimen C and D based on observable features.
6 mk
(a(ii))
Identify two uses of specimen D in daily life.
2 mk
(b(i))
Observe the lower surface of specimen E and name the structures seen.
1 mk
(b(ii))
State the role of those structures.
1 mk
(c)
Draw specimen D and label five parts.
0 mk
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