(i) Sugar is fermented in flask A. (ii) Test tube B shows bubbles or gas due to carbon dioxide. (iii) Without yeast, fermentation doesn’t occur and no gas forms, so the test tube stays unchanged. class 8 science chapter 2 the ...
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Yes, a cell’s shape and structure relate directly to its function. For example, red blood cells are disc-shaped to carry oxygen easily, while nerve cells are long to transmit messages over distances. Class 8 Science Curiosity Textbook Chapter 2 The Invisible ...
Like bricks in a wall, plant cells are tightly arranged in rows and columns. Each cell resembles a brick with rigid walls, giving the plant structure and support. Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked ...
The root image symbolizes strong foundational knowledge in science. Like roots anchor a plant, solid understanding of basic concepts helps students grow as thinkers and investigators in the scientific world. Class 8 Science Curiosity Textbook Chapter 1 Exploring the Investigative World ...
Mixtures are physical combinations of substances where each keeps its properties, like sand and salt. Compounds are chemical combinations where substances lose their individual properties, like water. Mixtures can be separated easily, but compounds require chemical changes. Class 8 Science Curiosity ...