Introduction to Respiration

Q. Why is transport of materials necessary in a plant or in an animal? Explain.

Q. Plants take in ________ and release _________ during respiration.

1. oxygen; nitrogen
2. carbon dioxide; oxygen
3. oxygen; carbon dioxide
4. nitrogen; oxygen

Q. Suppose we compare the leaf with a factory, match the items in column A with those in column B.​

column A	column B.
1.Cells in the leaf	a.raw materials
2.Chloroplast	b.power
3.Sunlight	c.machinery
4.Oxygen and water	d.end_product
5.Carbon dioxide and water	e.by product
6.Glucose	f.work room

Q. Which vessel is responsible for the transport of water in plants?

1. Stomata
2. Chloroplast
3. Xylem
4. Phloem

Q. Plants take in ________ and release _________ during respiration.

1. nitrogen; oxygen
2. oxygen; carbon dioxide
3. oxygen; nitrogen
4. carbon dioxide; oxygen

Q. How much air do we exhale? We exhale $C{O}_2$ that we just inhaled; we also exhale $C{O}_2$ that is brought by blood vessels to our lungs; What about other gasses that are present in the atmosphere?

Q. More than One Answer Type
एक से अधिक उत्तर प्रकार के प्रश्न

In humans, during exhalation

मानव में, उच्छ्वसन के दौरान

1. The ribs move up and inwards
   
   पसलियाँ ऊपर और अंदर की ओर गति करती हैं
   
2. The diaphragm moves up
   
   डायाफ्राम ऊपर की ओर गति करता है
   
3. The size of the chest cavity reduces
   
   वक्ष गुहा का आयतन कम हो जाता है
   
4. Air is pushed into the lungs
   
   वायु फेफड़ों के अंदर धकेल दी जाती है
   

Q.

The process of respiration

1. Involves oxidation of food

2. Involves oxidation of glucose to carbon dioxide and water

3. Is accompanied by release a large amount of energy

4. All the above

Q. The gas that diffuses from blood to lungs is ...........

1. Oxygen
2. Carbon dioxide
3. Hydrogen
4. Helium

Q. Expiration involves

1. Relaxation of diaphragm and contraction of intercostal muscles.
2. Contraction of diaphragm muscles.
3. Contraction of Diaphragm and intercostal muscles.
4. Contraction of intercostal muscles.

Q. Do all cells use oxygen to produce energy?​

Q.

Why do we need to exchange oxygen and carbon dioxide?

1. We need $C{O}_2$ to breakdown glucose, of which oxygen is a by-product.

2. We need oxygen to break down glucose, of which $C{O}_2$ is a by-product.

3. We need $C{O}_2$ to breathe and produce oxygen as a by-product.
   

4. We need oxygen to breathe and produce $C{O}_2$ as a by-product.

Q. Why is transport of materials necessary in a plant or in an animal? Explain.