Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds

NCERT Solutions for Class 10 Science Chapter 6 Life Processes NCERT Solutions for Class 10 Science Chapter 6 – CBSE Free PDF Download * According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 5. NCERT Solutions for Class 10 Science Chapter 6 Life Processes at BYJU’S include all the questions provided in the NCERT textbook as per the CBSE board. We provide students with detailed Life Processes Class 10 NCERT enable students to quickly glance through the entire chapter at once, which comes in handy for last-minute studies. The Previous Next Access answers to NCERT Class 10 Science Chapter 6 Life Processes Questions Page Number 95 1. Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans? Solution: Multi-cellular organisms like humans have very big bodies and require a lot of oxygen to diffuse into the body quickly in order to meet the oxygen requirement. Diffusion is a slow process which will take a lot of time to circulate oxygen to all the body cells. Because of its slow nature, diffusion is insufficient to meet the oxygen requirements of multicellular organisms like humans. 2. What criteria do we use to decide whether something is alive? Solution: Walking, breathing, growth and other visible changes can be used to determine whether something is alive or dead. However, some living things will have changes that are not visible to our eye; Hence, the presence of the life process is a fundamental c...

Answer Oxygenated blood is pumped throughout the body and takes deoxygenated blood from the various parts of the body to the lungs for the purification of blood from the impure one for the maintenance of the body temperature and to maintain hydrogen ion concentration. As the birds and the mammals posses double circulatory system where pure and the impure blood remains separate. If the both oxygenated and deoxygenated blood got mixed then the whole blood will be impure and then our body will not survive for so long cause of the impure blood. That’s why the separation of oxygenated and deoxygenated blood is necessary. Recently Viewed Questions of Class 10 Science • Q:- How does our body respond when adrenaline is secreted into the blood? • Q:- A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases? • Q:- Plaster of Paris should be stored in a moisture-proof container. Explain why? • Q:- Why is the use of iodised salt advisable? • Q:- Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows. Metal Iron(II) sulphate Cooper(II) sulphate Zinc sulphate Silver nitrate A No reaction Displacement B Displacement No reaction Displacement C No reaction No reaction No reaction No reaction • Q:- Why are carbon and its compounds used as fuels...

Birds and mammals have a double circulation system. It is necessary for them to separate oxygenated and de- oxygenated blood so that their circulatory system is more efficient and can maintain their constant body temperature. It is also better if the oxygenated blood stays separate, as its combination with de- oxygenated blood will impure the entire blood. Bird and animals have complex body structures . Mammals for performing work and birds for flying require large amount of energy which they get from the breakdown of glucose with oxygen . If there is no seperation between the oxygenated and deoxygenated blood then the requirement of energy wouldn't be fulfilled . Also bodies of mammals and birds gets heat up very quickly , to maintain the temperature it becomes necessary to separate oxygenared and deoxygenated blood in the circulatory system. Hence birds and mammals have double circulatory system that helps them to do so .

Mammals and birds are warm blooded animals. Their energy requirement is high since they constantly require energy to maintain their body temperature. Hence, it is necessary to separate the oxygenated and the deoxygenated blood in mammals and birds as this separation allows a highly efficient supply of oxygen to the blood cells. This is important for producing a lot of energy and for maintaining the body temperature.

Mammals and birds continously require oxygen in all body parts so that aerobic respiration could take place so that heat is continously generated to maintain the body temperature required. To efficiently facilitate this process it is necessary to separate oxygenated and deoxygenated blood in mammals and birds.

Learning Outcomes • Compare and contrast the organization and evolution of the vertebrate circulatory system The circulatory system varies from simple systems in invertebrates to more complex systems in vertebrates. The simplest animals, such as the sponges (Porifera) and rotifers (Rotifera), do not need a circulatory system because diffusion allows adequate exchange of water, nutrients, and waste, as well as dissolved gases, as shown in Figure 1a. Organisms that are more complex but still only have two layers of cells in their body plan, such as jellies (Cnidaria) and comb jellies (Ctenophora) also use diffusion through their epidermis and internally through the gastrovascular compartment. Both their internal and external tissues are bathed in an aqueous environment and exchange fluids by diffusion on both sides, as illustrated in Figure 1b. Exchange of fluids is assisted by the pulsing of the jellyfish body. Figure 1. Simple animals consisting of a single cell layer such as the (a) sponge or only a few cell layers such as the (b) jellyfish do not have a circulatory system. Instead, gases, nutrients, and wastes are exchanged by diffusion. For more complex organisms, diffusion is not efficient for cycling gases, nutrients, and waste effectively through the body; therefore, more complex circulatory systems evolved. Most arthropods and many mollusks have open circulatory systems. In an open system, an elongated beating heart pushes the hemolymph through the body and muscle c...