biologiy chapter 1 class 10 please solve the questions
Answers
Answer:
9.i) Gills ii) Trachea iii) Cuticle iv) Lungs
10. The decomposition or separation of molecules by the action of light = Photolysis
11. Chemotrophs are organisms that obtain energy by the oxidation of electron donors in their environments. These molecules can be organic or inorganic.
12. Heterotrophs
13. Buccal Cavity
14.Growth, development, locomotion, nutrition & reproduction
15. Heterotrophs obtain their energy directly or indirectly from other organisms, while autotrophs obtain energy from inorganic sources, where they convert light energy (sunlight) into chemical energy. Heterotrophs depend on autotrophs for their food, while autotrophs are not.
16. The intake of food as a whole implies Holozoic Nutrition.
For 17. & 18. Refer NCERT pg. 282 Section–18.2
19. Role of HCl :
i) Kills bacteria
ii) Activates inactive enzymes
20. Function of Vili – Refer NCERT Pg. 259-260
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9.i) Gills ii) Trachea iii) Cuticle iv) Lungs
10. The decomposition or separation of molecules by the action of light = Photolysis .This is a chemical process
11. Chemotrophs are organisms that obtain energy by the oxidation of electron donors in their environments. These molecules can be organic or inorganic.
12. Heterotrophs
13. Buccal Cavity
14.Growth, development, locomotion, nutrition & reproduction
15. Heterotrophs obtain their energy directly or indirectly from other organisms, while autotrophs obtain energy from inorganic sources, where they convert light energy (sunlight) into chemical energy. Heterotrophs depend on autotrophs for their food, while autotrophs are not.
16 .holozoic form of nutrition is that nutrition in which organism take in the food as a whole for e.g.:-ameoba
17. A system of tiny tubes called lymph vessels and lymph nodes in the human body which transports the liquid called lymph from the body tissues to the blood circulatory system is called lymphatic system
18. 1.lymph take part in nutritive process of body
2.lymph protects body by killing germs
3.lymph helps in removing waste products
19.1.It kill germs
2.it activates pepsin
20.When the food has been broken down into nutrients, vitamins. proteins etc. from the stomach to the small intestine, villi lines the intestine and the villi absorbs the nutrients and vitamins which will be used by the body
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