The Central Board of Secondary Education (CBSE) administered the Secondary School Examination (Class 8) Science question paper for SA2 (Summative Assessment 2) in March 2018. The biology section carried a weightage of 30 marks and consisted of 30 questions.
Question Paper Pattern:
MCQ: Which of the following is not a function of human skeleton?
(a) Support
(b) Protection
(c) Blood production
(d) Respiration
Solution: (d) Respiration
SAQ: Describe the process of transpiration in plants.
Solution: Transpiration is the process by which plants release water vapor into the atmosphere from their leaves. It occurs through tiny pores called stomata.
LAQ: Explain the role of hormones in controlling plant growth and development.
Solution: Hormones are chemical messengers that regulate various plant processes, including cell division, elongation, and differentiation. Examples include gibberellins, auxins, and cytokinins.
Topic | MCQs | SAQs | LAQs |
---|---|---|---|
Nutrition in Plants | 5 | 1 | 1 |
Nutrition in Animals | 5 | 1 | 1 |
Respiration in Organisms | 4 | 2 | 1 |
Transportation in Plants | 3 | 1 | 0 |
Transportation in Animals | 3 | 1 | 1 |
Excretion in Humans | 3 | 1 | 0 |
Locomotion and Movement | 3 | 1 | 0 |
Control and Coordination | 2 | 1 | 0 |
Reproduction in Plants | 2 | 1 | 0 |
Topic | Marks |
---|---|
Nutrition in Plants | 8 |
Nutrition in Animals | 8 |
Respiration in Organisms | 9 |
Transportation in Plants | 3 |
Transportation in Animals | 6 |
Excretion in Humans | 3 |
Locomotion and Movement | 3 |
Control and Coordination | 3 |
Reproduction in Plants | 3 |
Question Type | Marks | Proportion |
---|---|---|
MCQs | 20 | 66.67% |
SAQs | 14 | 46.67% |
LAQs | 15 | 50% |
Story 1:
A student was asked to label a diagram of an animal cell. After much hesitation, he confidently wrote "Mitochondria: The powerhouse of the chicken coop."
Lesson: Pay attention to details and avoid making silly mistakes.
Story 2:
A teacher was discussing the respiratory system and asked the class, "What is the main organ involved in breathing?"
A student promptly replied, "The nose hairs."
Lesson: Encourage active participation, but also provide accurate guidance.
Story 3:
A group of students were performing an experiment on the digestion of starch. They added iodine solution to a test tube containing starch and observed a blue-black color.
One student exclaimed, "Wow, it's like magic!"
Lesson: Science can be fascinating and reveal hidden wonders.
Prepare diligently for your 8th class biology question paper 2018 SA2 to excel in the exam. By understanding the exam pattern, practicing with previous year papers, and utilizing effective study strategies, you can achieve your academic goals. Remember, biology is a fascinating and essential subject that has significant implications for our well-being and future.
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