Q20: Islamic Studies MCQ 2023

**When a patient’s immune system becomes reactive to a drug, this is an example of:**A) Super infectionB) Drug resistanceC) AllergyD) None of these Show Answer Correct Answer: C – Allergy

**Night blindness is caused due to the deficiency of:**A) Vitamin AB) Vitamin BC) Vitamin CD) Vitamin D Show Answer Correct Answer: A – Vitamin A

**‘Blue dwarfs’ and ‘Red giants’ respectively refer to:**A) Moons of JupiterB) Young star and Old starC) Old star and Young starD) None of these Show Answer Correct Answer: B – Young star and Old star

**Which group of animals has heterogametic females?**A) Domestic fowlB) EarthwormC) RabbitD) None of these Show Answer Correct Answer: A – Domestic fowl