Full Marks: 30
Pass Marks: 09
Time: 1 Hour
ALLOTMENT OF MARKS
| Question Number | Marks Per Question | Total Marks |
|---|---|---|
| Q. No. 1 (a) | 1 × 5 | 5 |
| Q. No. 1 (b) | 1 × 3 | 3 |
| Q. No. 2 | 2 × 5 | 10 |
| Q. No. 3 | (2 + 1) × 4 | 12 |
| Q. No. 4 | 5 × 2 | 10 |
| Total Marks | 40 | |
The figures in the margin indicate full marks for the questions.
Section 1
1. (a) Express in one or two words: (1 × 5 = 5)
- What is the percentage of Carbon dioxide present in the atmosphere?
- What is known as a group of individuals of the same species present in an area at a given time?
- Give example of one non-renewable resource and one vehicular emission causing air pollution.
- Bhopal Gas disaster took place in which month and year?
- In which month of the year ‘Road Safety Week’ is observed?
1. (b) Fill in the blanks: (1 × 3 = 3)
- Every food chain starts with a ________.
- Pitcher plant is ________ plant.
- Motor Vehicles Act was implemented in the year ________.
Section 2
2. Write short account on any five of the following: (2 × 5 = 10)
- Abiotic components of environment.
- Food chain.
- Biopiracy.
- Mineral resources of Assam.
- Thermal pollution.
- Requirements for an International Driving Permit.
- Greenhouse effect.
Section 3
3. Define and distinguish any four of the following: ((2+1) × 4 = 12)
- Population and community.
- Consumer and decomposer.
- Renewable and non-renewable energy sources.
- Autotrophs and heterotrophs.
- In situ and ex situ conservation.
- Natural and manmade pollution.
Section 4
4. Answer any two questions of the following: (5 × 2 = 10)
- Write about the needs and methods of water conservation.
- Give an account on the management of natural disaster like earthquake in India.
- What are the causes and effects of global warming?
- Mention at least three road rules applicable in a school bus and two traffic rules to ensure road safety.

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