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Question if, , Respiration can occur in two different, manners. Briefly explain the process of, aerobic respiration. How does it differ from, anaerobic respiration?, , Answer:, , Types of Respiration, , On the basis of the presence or absence of, oxygen, respiration is classified into two, types:, , 1. Aerobic Respiration: When breakdown, of glucose occurs with the use of oxygen, it, is called aerobic respiration. During aerobic, respiration, glucose is completely broken, down into carbon dioxide and water and, energy is released. Aerobic respiration, takes place in mitochondria. It can be, shown by the following equation:, , Glucose —O*Y8"_, Carbon dioxide + Water + Energy

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Glucose —228°"_ Carbon dioxide + Water + Energy, , Food, , Aerobic respiration is seen in most of the, organisms such as humans (man), dogs,, cats, lions, elephants, cows, buffaloes,, goats, snakes, earthworms, frogs, fishes,, etc., , 2. Anaerobic Respiration: When

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2. Anaerobic Respiration: When, breakdown of glucose takes place without, using oxygen, it is called anaerobic, respiration. The glucose is not completely, broken down into carbon dioxide and, water. An intermediate compound is, formed with the release of less amount of, energy during this process. It can be, shown as follows:, , N ;, Glucose ——“""""*, Alcohol + Carbon dioxide + Energy, , Yeasts such as Saccharomyces cereviseae, and certain bacteria carry out anaerobic, respiration. These organisms that carry out, respiration in the absence of oxygen are, called anaerobes.

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question @, , Respiration in fish is different from, humans. Explain in brief how fishes can, breathe through gills?, , Answer:, , Fishes are the aquatic animals that live in, water. These have a special organ for, breathing called gills. The oxygen dissolved, in water enters through the gills. Gills are, actually the projections of skin and have, blood vessels for the exchange of, respiratory gases. The fishes breathes by, taking in water through its mouth and, sending it over the gills. The oxygen, dissolved in the water is extracted by the, gills and the extracted oxygen is absorbed, , by the blood.

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Water with, oxygen, , , , Breathing in fish, , This oxygen is then carried to all the parts, of fishes for respiration. The carbon dioxide, produced during respiration is brought, back by the blood into the gills and, , expelled into the surrounding water.