Life Processes Worksheet-6

Life Processes Worksheet-6

 

  1. Name the two phases in which aerobic respiration is carried out.

 

  1. What makes exchange of gases in gills and lungs possible?

 

  1. Name the substance that is oxidised in the body during respiration.

 

  1. Name the respiratory pigment of blood in mammals.

 

  1. What is the main function of Adam's Apple?

 

  1. How does Amoeba respire?

 

  1. Name the fundamental process in which living organisms release energy within their cytoplasm.

 

  1. Name any organism that can respire without oxygen.

 

  1. Give one point which is common for both aerobic and anaerobic respiration.

 

  1. Name two organisms respiring anaerobically.

 

  1. Why is anaerobic respiration less efficient?

 

  1. Explain why respiration is called an energy release process.

 

  1. Give reasons why respiration is called a catabolic process.

 

  1. What is the source of oxygen in photosyn-thesis?

 

  1. Why are lungs divided into very small sac-like structures called alveoli?

 

  1. Why do mammals require more extensive respiratory surface?

 

  1. Why is breathing through nose healthier?

 

  1. What will happen if the diaphragm of a person gets ruptured in an accident?

 

  1. What are the different respiratory organs in animals?

 

  1. State the functions of grana of chlorophyll.

 

Answer:

  1. External respiration and internal respiration.

 

  1. Thin walled blood capillaries.

 

  1. Glucose

 

  1. Haemoglobin

 

  1. To produce voice in the presence of air.

 

  1. Amoeba respires through the body surface.

 

  1. Respiration.

 

  1. Yeast.

 

  1. In both aerobic and anaerobic respiration, the chemical used in glucose.

 

  1. Bacteria and fungi.

 

  1. Anaerobic respiration is the incomplete breakdown of glucose and produces less energy, so it is less efficient.

 

  1. During respiration the complete molecules are broken down into simple ones by the release of energy.

 

  1. Respiration involves the breakdown of complex molecules into simple ones by oxygen.

 

  1. The source of oxygen in photosynthesis is water.

 

  1. Lungs are divided into small sacs or alveoli to increase the surface area through which respiratory exchange takes place.

 

  1. Mammals need more oxygen to meet the requirement of their high metabolic rate. Therefore, they need extensive respiratory surface.

 

  1. Breathing through nose is healthier because the inhaled air gets filtered by the cilia and mucus present in the nose. Thus, the air that goes into lungs is cleaner.

 

  1. Immediate death due to failure of respiration.

 

  1. Gills, lungs, skin, air tubes or trachea.

 

  1. Light reaction of photosynthesis takes place in grana of chlorophyll.