Body Fluids and Circulation” is an important chapter in Class 11 Biology, focusing on the various body fluids present in the human body and the mechanisms of circulation that ensure the transport of nutrients, gases, hormones, and waste products. Below is a detailed overview of the topic: 1. Body Fluids There are two main types […]
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Breathing and the exchange of gases is a crucial biological process that allows organisms to obtain oxygen (O₂) and eliminate carbon dioxide (CO₂). 1. Breathing or Pulmonary Ventilation Breathing involves two main processes: During inhalation, the diaphragm (a dome-shaped muscle beneath the lungs) contracts and flattens, and the intercostal muscles (between the ribs) contract, causing
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Welcome to the NCERT Biology class 12 Line-by-Line Questions ! This resource is designed to facilitate a deeper understanding of biological concepts as outlined in the NCERT curriculum. By breaking down the textbook into detailed, line-by-line questions, we aim to help students grasp essential ideas and foster critical thinking skills. Sexual Reproduction in Flowering Plants.
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