Science 2026 Exam Questions and Answers

Science Exam Questions and Answers SECTION A – Biology Question 1: Identify the part that controls the closing and opening of the stomatal pore in leaves of plants. [1] Select the correct option. [1] Stomata [1] Epidermal cells [1] Guard cells [1] Chloroplasts [1] Answer: (C) Guard cells Question 2: Identify the endocrine gland that regulates the growth of human body. [1] Pituitary gland [1] Thyroid gland [1] Pancreas [1] Adrenal gland [1] Answer: (A) Pituitary gland Question 3: Choose the equation of reaction that correctly represents anaerobic respiration in muscles: [1] Glucose \(\xrightarrow{\text{Absence of } O_2}\) Pyruvate \(\rightarrow\) Ethanol + \(CO_2\) + Energy [1] Glucose \(\xrightarrow{O_2}\) Pyruvate \(\xrightarrow{O_2}\) Energy [1] Glucose \(\xrightarrow{O_2}\) Pyruvate \(\xrightarrow{\text{Lack of oxygen}}\) Ethanol + Energy [1] Glucose \(\rightarrow\) Pyruvate \(\xrightarrow{\text{Lack of oxygen}}\) Lactic acid + Energy [1] Answer: (D) Glucose \(\…