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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خلیے کی موت جو ____ نامی بیرونی عنصر کی وجہ سے ہوتی ہے؟
Answer: Necrosis
Explanation Necrosis is a type of cell death caused by external factors such as injury , infection, toxins, or lack of blood supply. It is a premature and uncontrolled death of cells , often resulting in inflammation and tissue damage.
سائنسی عمل کا کلیدی جزو ______ ہے؟
Answer: Hypothesis
Explanation A hypothesis is a testable prediction that explains a phenomenon or solves a problem. It's a crucial component of the scientific process, as it provides a framework for testing and experimentation.
جیسے جیسے درجہ حرارت بڑھتا ہے، ابتدائی طور پر رد عمل کی شرح _____ ہوگی؟
Answer: Increase
Explanation As temperature increases , the rate of reaction initially increases due to the increased kinetic energy of the molecules. It allowing them to overcome the activation energy barrier and react more quickly.
وولووکس _______ کی پولی فیلیٹک جینس ہے؟
Answer: Green algae
Explanation Volvox is a genus of green algae that includes about 20 species of aquatic, photosynthetic organisms. They are characterized by their spherical or ellipsoidal shape and are typically found in freshwater environments. Volvox species are known for their unique colony structure , which consists of a hollow sphere of cells surrounding a central cavity.
جانوروں میں مییوسس _____ پیدا کرتا ہے؟
Answer: Gametes
Explanation Meiosis in animals produces gametes , which are the reproductive cells (sperm and egg cells) that are necessary for sexual reproduction. Meiosis is the process by which a diploid (having two sets of chromosomes) cell divides to produce four haploid (having one set of chromosomes) cells, each with half the number of chromosomes as the parent cell.
مندرجہ ذیل میں سے ایک کو منتخب کریں؟
Answer: Animalia → Amoeba
Explanation Amoeba is a protist , not an animal. It belongs to the kingdom Protista, not Animalia.
حیاتیاتی تنظیم کی صحیح ترتیب کو منتخب کریں؟
Answer: Atom → Molecule → Cell → Tissue → Organ
Explanation The correct sequence of biological organization is: Atom → Molecule → Cell → Tissue → Organ This sequence represents the hierarchy of biological organization , from the smallest units (atoms) to the largest (organs): Atoms ( the building blocks of matter ) Molecules (groups of atoms bonded together) Cells ( the basic structural and functional units of life ) Tissues (groups of similar cells performing a specific function) Organs ( structures composed of two or more types of tissues working together )
روشنی کی موجودگی میں پانی کے پھٹنے کو _____ کہتے ہیں؟
Answer: Photolysis
Explanation Photolysis is the process by which water (H2O) is split into hydrogen ions (H+), electrons, and oxygen (O2) in the presence of light. This process occurs in the thylakoid membranes of chloroplasts during photosynthesis and is driven by light energy.
Answer: 5
Explanation The energy released (14135 KJ) is equivalent to the energy released from the oxidation of glucose (C6H12O6), which is typically around 2820 KJ/mol. To find the number of moles of glucose consumed , you can divide the energy released (14135 KJ) by the energy released per mole of glucose (2820 KJ/mol): 14135 KJ ÷ 2820 KJ/mol = 5 mol
مندرجہ ذیل میں سے کون سا بیان پیپسن کی وضاحت کرتا ہے؟
Answer: It begins the hydrolysis of proteins in the stomach
Explanation Pepsin is a proteolytic enzyme produced by the chief cells in the stomach lining. It breaks down proteins into smaller peptides and amino acids, initiating protein digestion in the acidic environment of the stomach.
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