Practise Biology Class 9th MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.
Study Biology Class 9th MCQs through multiple-choice questions in General Science. This subtopic contains 178 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these Biology Class 9th MCQs MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.
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بیماریوں کی تشخیص اور علاج کی سائنس کو کیا کہتے ہیں؟
Answer: Both B and C
Explanation Medicine involves the diagnosis and treatment of diseases. Surgery is a branch of medicine focused on operative procedures. Both fields are crucial in the overall treatment and management of diseases.
وراثتی حالت جو خون کے ہیموگلوبن کو متاثر کرتی ہے جسے _____ کہا جاتا ہے؟
Answer: Thalassemia
Explanation Thalassemia is a genetic disorder that affects the production of hemoglobin, a protein in red blood cells that carries oxygen to the body's tissues. It is characterized by abnormal hemoglobin production , leading to anemia, fatigue, and other complications.
کھردری اینڈوپلاسمک ریٹیکولم کا کام کیا ہے؟
Answer: Synthesis of protein
Explanation The rough endoplasmic reticulum (RER) is responsible for synthesizing proteins, which are then transported to other parts of the cell or secreted outside. The RER has ribosomes attached to its surface , where protein synthesis occurs.
پٹھوں کے سنکچن اور نرمی کی تال کی حرکت کی لہر کو ____ کہا جاتا ہے؟
Answer: Peristalsis
Explanation Peristalsis is a wave of rhythmic movements of muscle contraction and relaxation that helps move substances through a tubular structure , like the digestive tract. It's a vital process that facilitates the transport of food, water, and waste products through the digestive system.
کینسر کی ایک قسم جو خون، بون میرو اور لمفیٹک نظام کو متاثر کرتی ہے؟
Answer: Leukemia
Explanation Leukemia is a type of cancer that affects the blood , bone marrow, and lymphatic system. It occurs when there is an abnormal growth of white blood cells , which can crowd out healthy cells and platelets.
سٹوماٹا کا کھلنا اور بند ہونا بھی ___ سے ریگولیٹ ہوتا ہے؟
Answer: Guard cells
Explanation Guard cells regulate the opening and closing of stomata , controlling gas exchange and transpiration. They surround the stomata and change shape in response to environmental conditions, opening or closing the stomata as needed.
پروٹین فیکٹریوں سے پروٹین کی پیداوار کے صحیح راستے کا پتہ لگائیں؟
Answer: Ribosomes → RER → Golgi body → Lysosome
Explanation The correct order is : Ribosomes → RER → Golgi body → Lysosome. Ribosomes : Protein synthesis occurs here , and the newly synthesized protein is released into the cytosol. RER (Rough Endoplasmic Reticulum) : The protein is transported to the RER , where it is processed and modified (e.g., folding, glycosylation). Golgi body : The protein is packaged into vesicles and transported to the Golgi body, where it is further modified and sorted. Lysosome : The protein is delivered to lysosomes , where it can be used for various cellular processes (e.g., digestion, recycling).
مخصوص مسکن میں رہنے والے مختلف انواع کے ارکان کو ____ کہتے ہیں؟
Answer: Community
Explanation A community refers to all the different species living in a specific habitat or area, interacting with each other and their environment. It includes plants, animals, microorganisms, and even fungi. While A localized group of organisms that belong to the same species is called a population.
انسانی جسم میں _____ سے زیادہ معلوم انزائمز ہیں۔
Answer: 1000
Explanation In the human body , there are more than 1,000 known enzymes. These enzymes play essential roles in catalyzing biochemical reactions.
مچھلی کی پیداوار کی مقدار اور معیار میں اضافہ کیا ہے؟
Answer: Fisheries
Explanation Fisheries refer to the industry or practice of catching , breeding, and managing fish and other aquatic organisms. Increased quantity and quality of fish production is a result of improvements in fisheries management, aquaculture (fish farming), and fishing technologies.
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