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DSEE 🇹🇿 NECTA ✓ Official NECTA answers

Biology · Paper 1 · 2023

23 questions

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Questions (23)

Section A

1. 4 marks

Classify the following organisms from phylum/division to class level; (a) Moss (b) Crab, (c) Water lily (d) Amoeba

(a) Moss 1 mk
(a) Moss 1 mk
(b) Crab 1 mk
(b) Crab 1 mk
(c) Water lily 1 mk
(c) Water lily 1 mk
(d) Amoeba 1 mk
(d) Amoeba 1 mk

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2. 2 marks

Validate the statement by giving two points that cells of cold-blooded animals have high proportion of unsaturated fatty acids than those of warm-blooded animals.

(none) Explain why cells of cold-blooded animals have a high proportion of unsaturated fatty acids. 2 mk

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3. 4 marks

Give four possible factors that affect Basal Metabolic Rate (BMR).

(none) List four factors affecting Basal Metabolic Rate (BMR). 4 mk

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4. 4 marks

Explain the need for producers, consumers, detritivores and decomposers in the biotic component of an ecosystem.

(none) Explain the role of decomposers in an ecosystem. 1 mk

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5. 4 marks

Explain the importance of providing care and support to people living with HIV/AIDS infections.

(none) Discuss the importance of care and support for people living with HIV/AIDS. 4 mk

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6. 4 marks

Explain four necessities of teacher’s guide to student teachers during Block Teaching Practice (BTP).

(none) List and explain four necessities of a teacher's guide for student teachers during BTP. 4 mk

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7. 4 marks

Explain strategies to be used to promote students’ active participation in learning.

(none) Describe strategies to promote active student participation in learning. 4 mk

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8. 4 marks

Explain ways used to facilitate practical session on dissection of a cockroach in a school where there are no laboratory facilities.

(none) Suggest ways to conduct a cockroach dissection practical without a lab. 4 mk

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9. 4 marks

Explain four limitations of using real objects as best media in actual biology classroom.

(none) List and explain four limitations of using real objects as teaching media in biology. 4 mk

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10. 6 marks

Observe the figure and answer the questions that follow: Page 2 of 3

(a) Which concept in teaching does the figure represent? 1 mk
(b) Identify two curriculum materials required for the student teacher to carry out in stage II. 2 mk
(c) How important are the activities at stage IV to the student teacher? Give two points. 3 mk

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Section B

11. 6 marks

Explain in six points the contribution of Biotechnology towards industrial economic development in Tanzania.

(none) Discuss six contributions of biotechnology to Tanzania's industrial economic development. 6 mk

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12. 6 marks

Justify six aspects showing beneficial and detrimental economic importance of bacteria to human and other organisms.

(none) Provide six examples of beneficial and detrimental economic impacts of bacteria. 6 mk

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13. 6 marks

Develop six safety precaution measures that a student should follow to reduce accidents during practical session on food test.

(none) List and explain six safety precautions for food testing practicals. 6 mk

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14. 7 marks

Prepare an observation checklist with seven points to observe during assessment of the biology practical, which require the students to dissect a cockroach and display its digestive system.

(none) Create a 7-point observation checklist for assessing a cockroach dissection practical. 7 mk

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