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 2 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. 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. Osmosis C. Diffusion D. Plasmolysis explanation: Plasmolysis occurs when a plant cell loses water through osmosis, causing the cell membrane to pull away from the cell wall. 2 / 202. What is the outermost covering of an animal cell? A. Cell wall B. Cytoplasm C. Nuclear membrane 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. 3 / 203. Which type of cell lacks a nuclear membrane? A. Neither a nor b B. Prokaryotic cell C. Both a and b D. Eukaryotic cell explanation: Prokaryotic cells, such as bacteria, lack a nuclear membrane and other membrane-bound organelles. 4 / 204. What is the name of the fluid content inside the plasma membrane? A. Protoplasm B. Nucleoplasm C. None of the above D. Cytoplasm explanation: The cytoplasm is the fluid content inside the plasma membrane that contains various cell organelles. 5 / 205. What is the function of meiosis? A. Neither a nor b B. To grow and repair tissues C. To produce gametes D. Both a and 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. 6 / 206. Which organelle is responsible for protein synthesis? A. Nucleus B. Ribosomes C. Mitochondria D. Golgi apparatus explanation: Ribosomes are the sites of protein synthesis in the cell. 7 / 207. Who first discovered cells? A. Robert Hooke B. Anton van Leeuwenhoek C. Matthias Schleiden D. Robert Brown explanation: Robert Hooke first discovered cells in 1665 while examining a thin slice of cork under a microscope. 8 / 208. What is the process by which water moves across a selectively permeable membrane? A. Active transport B. Osmosis C. Diffusion D. Endocytosis 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. 9 / 209. What is the process by which new cells are formed for growth and repair? A. Both a and b B. Meiosis C. Mitosis D. Neither a nor b explanation: Mitosis is the type of cell division that produces two identical daughter cells for growth and repair of tissues. 10 / 2010. 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. 11 / 2011. 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. 12 / 2012. What is the name of the staining method developed by Camillo Golgi? A. The "black reaction" B. The "weak reaction" C. None of the above D. The "silver reaction" explanation: Camillo Golgi developed a revolutionary staining method called the “black reaction” to visualize individual nerve and cell structures. 13 / 2013. What is the function of vacuoles? A. To synthesize proteins B. To produce energy C. To store materials D. To transport materials explanation: Vacuoles are storage sacs for various substances, including water, nutrients, and waste products. 14 / 2014. What is the primary function of mitochondria? A. To transport materials B. To store food C. To produce energy D. To synthesize proteins explanation: Mitochondria are responsible for generating energy in the form of ATP through cellular respiration. 15 / 2015. What is the function of the cell membrane? A. To store genetic information B. To produce energy C. To control the entry and exit of materials D. To provide structural support explanation: The cell membrane regulates the movement of materials in and out of the cell, allowing some materials to pass while preventing others. 16 / 2016. What is the basic building unit of an onion bulb? A. Tissue B. Organelle C. Cell D. Organ explanation: The basic building unit of all living organisms, including onion bulbs, is the cell. 17 / 2017. Which organelle is known as the “suicide bag” of the cell? A. Mitochondria B. Endoplasmic reticulum C. Lysosome 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. 18 / 2018. What is the function of the Golgi apparatus? A. To store genetic information B. To package and dispatch materials C. To produce energy D. To break down waste materials explanation: The Golgi apparatus packages and dispatches materials, such as proteins and lipids, to various locations within and outside the cell. 19 / 2019. What happens to a plant cell when placed in a hypotonic solution? A. It swells B. It bursts C. It stays the same size D. It shrinks explanation: In a hypotonic solution, water moves into the cell by osmosis, causing it to swell. 20 / 2020. What is the name of the kitchen that Golgi converted into a laboratory? A. The University of Pavia B. The Hospital of St. Matteo C. The Hospital for the Chronically Sick at Abbiategrasso D. None of the above explanation: Camillo Golgi converted a little kitchen at the Hospital for the Chronically Sick at Abbiategrasso into a laboratory. 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 58% 0% Restart quiz Category: Class 9 Science Quizzes in English
