The Fundamental Unit of Life (जीवन की मौलिक इकाई) Ch(5) Posted on February 28, 2025February 28, 2025 by Anshul Gupta0% 0 votes, 0 avg 0 The Fundamental Unit of Life (जीवन की मौलिक इकाई) Ch(5)Practice Quiz in Hindi Part – 1 || Class 9 Science Practice Quizzes in English 1 / 201. Who first discovered cells? A. Matthias Schleiden B. Robert Brown C. Robert Hooke D. Anton van Leeuwenhoek explanation: Robert Hooke first discovered cells in 1665 while examining a thin slice of cork under a microscope. 2 / 202. Which type of cell lacks a nuclear membrane? A. Prokaryotic cell B. Both a and b C. Neither a nor b D. Eukaryotic cell explanation: Prokaryotic cells, such as bacteria, lack a nuclear membrane and other membrane-bound organelles. 3 / 203. What is the function of vacuoles? A. To store materials B. To synthesize proteins C. To transport materials D. To produce energy explanation: Vacuoles are storage sacs for various substances, including water, nutrients, and waste products. 4 / 204. What is the function of the cell membrane? A. To control the entry and exit of materials B. To produce energy C. To provide structural support D. To store genetic information explanation: The cell membrane regulates the movement of materials in and out of the cell, allowing some materials to pass while preventing others. 5 / 205. What is the primary function of mitochondria? A. To store food B. To produce energy C. To transport materials D. To synthesize proteins explanation: Mitochondria are responsible for generating energy in the form of ATP through cellular respiration. 6 / 206. What is the function of the Golgi apparatus? A. To store genetic information B. To package and dispatch materials C. To break down waste materials D. To produce energy explanation: The Golgi apparatus packages and dispatches materials, such as proteins and lipids, to various locations within and outside the cell. 7 / 207. What is the basic building unit of an onion bulb? A. Tissue B. Organ C. Organelle D. Cell explanation: The basic building unit of all living organisms, including onion bulbs, is the cell. 8 / 208. Which organelle is known as the “suicide bag” of the cell? A. Lysosome B. Mitochondria C. Endoplasmic reticulum D. Vacuole explanation: Lysosomes contain digestive enzymes that break down waste materials and cellular debris. They are sometimes referred to as “suicide bags” because they can digest the cell itself under certain conditions. 9 / 209. What happens to a plant cell when placed in a hypotonic solution? A. It shrinks B. It bursts C. It swells D. It stays the same size explanation: In a hypotonic solution, water moves into the cell by osmosis, causing it to swell. 10 / 2010. What is the name of the scientist who shared the Nobel Prize with Golgi in 1906? A. Robert Brown B. Matthias Schleiden C. Santiago Ramony Cajal D. None of the above explanation: Camillo Golgi shared the Nobel Prize with Santiago Ramony Cajal for their work on the structure of the nervous system. 11 / 2011. What is the phenomenon called when the contents of a plant cell shrink away from the cell wall due to water loss? A. Endocytosis B. Plasmolysis C. Osmosis D. Diffusion explanation: Plasmolysis occurs when a plant cell loses water through osmosis, causing the cell membrane to pull away from the cell wall. 12 / 2012. Which organelle is responsible for protein synthesis? A. Golgi apparatus B. Nucleus C. Mitochondria D. Ribosomes explanation: Ribosomes are the sites of protein synthesis in the cell. 13 / 2013. What is the process by which new cells are formed for growth and repair? A. Neither a nor b B. Mitosis C. Both a and b D. Meiosis explanation: Mitosis is the type of cell division that produces two identical daughter cells for growth and repair of tissues. 14 / 2014. What is the name of the kitchen that Golgi converted into a laboratory? A. The Hospital of St. Matteo B. The University of Pavia C. None of the above D. The Hospital for the Chronically Sick at Abbiategrasso explanation: Camillo Golgi converted a little kitchen at the Hospital for the Chronically Sick at Abbiategrasso into a laboratory. 15 / 2015. What is the process by which water moves across a selectively permeable membrane? A. Diffusion B. Active transport C. Endocytosis D. Osmosis explanation: Osmosis is the specific process by which water molecules move across a selectively permeable membrane from a region of higher water concentration to a region of lower water concentration. 16 / 2016. What is the name of the fluid content inside the plasma membrane? A. Protoplasm B. None of the above C. Cytoplasm D. Nucleoplasm explanation: The cytoplasm is the fluid content inside the plasma membrane that contains various cell organelles. 17 / 2017. What is the outermost covering of an animal cell? A. Nuclear membrane B. Cytoplasm C. Cell wall D. Plasma membrane explanation: The outermost covering of an animal cell is the plasma membrane, which separates the cell’s contents from its external environment. 18 / 2018. What is the function of meiosis? A. To grow and repair tissues B. To produce gametes C. Both a and b D. Neither a nor b explanation: Meiosis is a type of cell division that produces four daughter cells with half the number of chromosomes as the parent cell, leading to the formation of gametes. 19 / 2019. What is the name of the staining method developed by Camillo Golgi? A. The "weak reaction" B. The "silver reaction" C. None of the above D. The "black reaction" explanation: Camillo Golgi developed a revolutionary staining method called the “black reaction” to visualize individual nerve and cell structures. 20 / 2020. Which type of plastid is responsible for photosynthesis? A. Chloroplast B. None of the above C. Chromoplast D. Leucoplast explanation: Chloroplasts contain chlorophyll, the pigment that captures light energy for photosynthesis. Please insert your information to see your ranking अपनी Ranking जानने के लिए कृपया अपनी जानकारी भरे NamePhone Number Your score isThe average score is 0% 0% Restart quiz Category: Class 9 Science Quizzes in English
