Question

Give reason of the following: 9. An organisms that has tentacles. 2. Wool industry workers often de 13. We should keep our teeth clean. 4. Humans cannot digest cellulose. 5. Ship are usually sheared during warm weathe 6. Some varieties of sheep selectively bred. 7. Why do cut fruits and vegetables turn brown 8. Chewing boiled rice for sometime gives us a 9. Hydrochloric acid plays an important role in 10. Animals are heterotrophic फर्स्ट आंसर ​

Answer 1

Answer:

1, Nutrition in Animals encompasses all the essential concepts associated with the process of Nutrition in Animals. The chapter starts with a basic definition of animal nutrition and familiarizes the students with the term digestion. Thereafter, an introduction to different ways in which animals consume their food is discussed, together with examples of bees and birds. The associated activity talks about various feeding habits of animals and presents it in a tabular format. The major portion of the chapter, Nutrition in Animals is extensively discussed under the label- digestion in humans. For a better understanding, this journey of food is explained in the following parts of the alimentary canal:

Buccal cavity

Oesophagus

Stomach

Small intestine

Large intestine

Anus

Each part is thoroughly explained using labelled diagrams.

A note on additional parts like teeth and tongue as well as sweets and tooth decay are provided separately in the chapter. Labelled diagrams presenting the arrangement of teeth and different types of teeth like incisors, molars, premolars, canines augments the understanding of the concept. The chapter Nutrition in Animals also focuses on a few basic terms like ingestion, diarrhoea, ORS etc. In addition to the above topics, Nutrition in Animals also covers a discussion on the digestion process in grass-eating animals like buffaloes and cows. Such animals are collectively termed as ruminants and their process of digestion as rumination. The concept is explained using a labelled diagram representing their digestive system. Lastly, the digestive system of amoeba is covered with the use of the diagram.

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Explanation:

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Answer 2

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• bryozoa ,snails etc.are the organisms which have tentacles.
• the industrial disease usually associated with wool textiles is anthrax.
• we should keep our teeth clean otherwise our tooth will cause cavity.
• In the human body, cellulose cannot be digested due to a lack of appropriate enzymes to break the beta acetal linkages. The human body does not have the digestive mechanism to break the monosaccharide bonds of cellulose.
• shearing means cut the wool off (a sheep or other animal).It is done in early summer.
• Oxygen in the air can cause sliced fruit to brown, a process called enzymic browning (an oxidation reaction). Phenols and the enzyme phenolase are found in the cells of the apple, and when these are exposed to oxygen in the air, for example through slicing, the oxygen causes a reaction.
• When we chew boiled rice for sometime your saliva starts to convert starches into sugar.Then it tastes sweet.
• Hydrochloric acid plays an major role in digestion.
• Heterotroph is an organism that eats other plants for nutrients.example; algae,some types of bacteria