Aerenchyma is a special tissue found in hydrophytes (e.g. Hydrilla, Potamogeton, etc.) and some land plants (e.g. petiole of banana, Canna), formed by parenchyma cells. They make a network by leaving wide air spaces (air cavities) for the gaseous exchange ...
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Mixture is constituted by more than one substance in any ratio. For example, water, soil, polluted air, etc.
A pure substances is one which is made up of only one kind of atoms or molecules. They have the same composition throughout.
Class 9th Science Session 2022-23 Class 9 Science Terminal Exams MCQ Solutions 9th Science Terminal Exam Based MCQ Extra Questions Class IX Science MCQ Extra Questions Answers
As momentum, p = m x v = 0.2 x 400 = 2/10 x 400 = 80 kg m/s