official question Bank for science class 10th chapter 6 What is the role of Saliva in the digestion of food?
Q. 2 जाइलम तथा फ्लोएम में पदार्थो के वहन में क्या अंतर है?
What are the difference between the transport of materials in xylem and Phloem?
Q. 3 स्वपोषी पोषण के लिए आवश्यक परिस्थितियां कौन सी है और उसके उपोत्पाद क्या हैं?
What are the necessary conditions for autotrophic nutrition and what are its byproducts?
Q. 4 वृक्काणु की रचना तथा क्रियाविधि का वर्णन कीजिए।
Describe the structure and functioning of nephrons.
Q. 5 मानव में वहन तंत्र के घटक कौन से हैं? इन घटकों के क्या कार्य है?
What are the components of the transport system in human beings? What are the functions of these components?
Q. 6 ग्लूकोज के आक्सीजन से भिन्न जीवों में ऊर्जा प्राप्त करने में विभिन्न पथ क्या है?
What are the different ways in which glucose is oxidised to provide energy in various organisms.
Q. 7 हमारे अमाशय में अम्ल की भूमिका क्या है? तथा पाचक एन्जाइमों का क्या कार्य है?
What is the role of the acid in our stomach and what is the function of digestive enzymes.
Q. 8 हमारे जैसे बहुकोशीय जीवों में आक्सीजन की आवश्यकता पूरी करने में विसरण क्यों आवश्यक है?
Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans.
Q. 9 हमारे शरीर में हीमोग्लोबिन की कमी के क्या परिणाम हो सकते हैं?
What would be the consequences of a deficiency of hemoglobin in our bodies.
Q. 10 वायवीय तथा अवायवीय श्वसन में क्या अंतर है? कुछ जीवों के नाम लिखिए जिनमें अवायवीय श्वसन होता है?
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
Q. 2 जाइलम तथा फ्लोएम में पदार्थो के वहन में क्या अंतर है?
What are the difference between the transport of materials in xylem and Phloem?
Q. 3 स्वपोषी पोषण के लिए आवश्यक परिस्थितियां कौन सी है और उसके उपोत्पाद क्या हैं?
What are the necessary conditions for autotrophic nutrition and what are its byproducts?
Q. 4 वृक्काणु की रचना तथा क्रियाविधि का वर्णन कीजिए।
Describe the structure and functioning of nephrons.
Q. 5 मानव में वहन तंत्र के घटक कौन से हैं? इन घटकों के क्या कार्य है?
What are the components of the transport system in human beings? What are the functions of these components?
Q. 6 ग्लूकोज के आक्सीजन से भिन्न जीवों में ऊर्जा प्राप्त करने में विभिन्न पथ क्या है?
What are the different ways in which glucose is oxidised to provide energy in various organisms.
Q. 7 हमारे अमाशय में अम्ल की भूमिका क्या है? तथा पाचक एन्जाइमों का क्या कार्य है?
What is the role of the acid in our stomach and what is the function of digestive enzymes.
Q. 8 हमारे जैसे बहुकोशीय जीवों में आक्सीजन की आवश्यकता पूरी करने में विसरण क्यों आवश्यक है?
Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans.
Q. 9 हमारे शरीर में हीमोग्लोबिन की कमी के क्या परिणाम हो सकते हैं?
What would be the consequences of a deficiency of hemoglobin in our bodies.
Q. 10 वायवीय तथा अवायवीय श्वसन में क्या अंतर है? कुछ जीवों के नाम लिखिए जिनमें अवायवीय श्वसन होता है?
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
Answers & Comments
Answer:
1) Saliva is 98% water, so it moistens the mouth and helps compact food into softened particles for easier swallowing. ... It's important to chew your food as much as possible, as taking longer to chew gives the enzymes in saliva time to begin the process of breaking down carbohydrates, a very important part of digestion.
2) Xylem tissue helps in the transport of water and minerals. Phloem tissue helps in the transport of food. ... Transport in xylem requires physical forces such as transpiration pull. Transport of food in phloem requires energy in the form of ATP.
3) Carbon dioxide, water, chlorophyll pigment, and sunlight are the necessary conditions required for autotrophic nutrition. Carbohydrates (food) and O2 are the by-products of photosynthesis.
4)A nephron is the filtration unit of the kidney. It consists of a tubule which is connected with collecting duct at one end and a cup-shaped structure at the other end. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.
5) The components of the transport system in human beings are the heart, blood, and blood vessels. The function of the heart is to pump oxygenated blood throughout the body and receives deoxygenated blood from the various body parts and sends this impure blood to the lungs for oxygenation
6) Different ways in which glucose breaks down
Anaerobic Respiration. The anaerobic respiration process takes place in the absence of oxygen. ...
Aerobic Respiration. In aerobic respiration, the breakdown of pyruvate occurs in oxygen to give rise to 3 molecules of carbon dioxide and water. ...
Lack of Oxygen. ...
Further references.
7) The hydrochloric acid found in the stomach facilitates digestion by disintegrating complex large food molecules into simpler molecules. The acid activates the pepsinogen enzyme required to digest proteins.
8) The process of diffusion is considered to be insufficient in order to meet all the requirements of oxygen in the body of multicellular organisms because in multicellular organisms, there are number of cells present and all the cells are not directly in contact with their surrounding environment and thus the diffusion ...
9) Therefore, deficiency of haemoglobin in the blood can affect the oxygen supplying capacity of the blood. ... This can lead to a deficiency of oxygen in the body cells. It can also lead to a disease called anaemia.
10) Name some organisms that use the anaerobic mode of respiration.
...
Differences between aerobic and anaerobic respiration.
Aerobic RespirationAnaerobic RespirationIt can be found in the cytoplasm and the mitochondriaIt can be found only in the cytoplasm.Glucose breaks down into carbon dioxide and water.Glucose breaks down into ethyl alcohol, carbon dioxide, and energy
Explanation:
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