Nutrition and Respiration
1) Define the term nutrition and nutrients.
- Give the different modes of nutrition with one example each.
- List two differences between Holozoic and Saprophytic modes of nutrition. Give examples also.
- Why is nutrition necessary for living organisms?
- Nutrition in Plants:
- Name the organelles which are responsible for Photosynthesis
- Explain why the rate of photosynthesis is low both at higher and lower temperatures? Is green light most or least useful for photosynthesis? Why?
- Describe an activity to show that chlorophyll/carbon dioxide/light/temperature are necessary for photosynthesis
- Write a short note on Light and Dark reactions
- What are the steps involved in Light independent reaction of photosynthesis
- If a chlorophyll containing plant is placed in an atmosphere lacking carbon dioxide. Would it live longer in light or darkness? Give reason
- Which part of the Spectrum does the chlorophyll absorb for photosynthesis
- How do temperature, water and Carbon dioxide affect the rate of photosynthesis? During which stage do the following occur: a) Synthesis of ATP and DPH b) synthesis of Carbohydrates?
- Give reasons why cuscuta does not possess leaves.
- Nutrition in Human Beings:
- Draw a diagram of human alimentary canal and label: Liver, Pancreas, Gall Bladder, and Duodenum. (Can be other parts also).
- What are the enzymes secreted by various parts(stomach, salivary glands, pancreas, gall bladder, liver, duodenum, small intestine) of the alimentary canal and their functions?
- Name the main organs of Human digestive system in the order in which they are involved in digesting food. In what steps and how does digestion of carbohydrates and proteins take place in our body.
- Explain the process of digestion in Human beings in detail with a diagram.
- Name the protein and starch digesting enzymes secreted by pancreas.
- Nutrition in Insects:
- With four labeled diagrams show the stage of Phagocytosis in Amoeba? Write a sentence about each.
- What is the mode of nutrition in fungi?
2) Differentiate between Respiration and breathing
- Aerobic and Anaerobic respiration
- Give any three differences between aerobic and anaerobic respiration
- What are the end products of aerobic and anaerobic respiration?
- Give the equations involved.
- Is respiration possible with oxygen? What names are given to such types of respiration? Name any of its end products.
- Respiration in Plants:
- What part of the root is involved in the exchange of respiratory gases
- Describe the stomatal respiration in plants
- What are lenticels?
- Respiration in Animals(Insects and Human Beings)
- Name the respiratory organs in: Fish, bird, earthworm.
- Name the respiratory organ in mussel and lizard
- From where do the following take in oxygen: Prawn, Rat, frog and Snake?
- Draw the respiratory system in Human beings.
- Describe the mechanism of breathing in the human beings (Explain clearly how the air is inhaled and exhaled during breathing).
- Name the two membranes covering the Lungs.
- What are Epiglottis and its function
- What is the total area of gaseous exchange provided by Alveoli in our two lungs?
- Why do not the walls of trachea collapse when there is no air in it?
- What is Emphysema?
- Why heart failure is common in smokers?
- A sprint runner gets exhausted and falls down after he reaches the finishing line. His muscles develop a lot of pain. Explain the bio-chemical changes occurring in his muscles during the period.
3) What do you mean by Photolysis?
4) What is Parthenogenesis?
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