Question: 1:- Which of the following statements about the autotrophs is incorrect?
Answer: (c) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
Question:2:- In which of the following groups of organisms, food material is broken down outside the body and absorbed?
Answer: (b) Yeast, Mushroom, bread mould
Question:3:- Select the correct statement
Answer: (a) Heterotrophs do not synthesize their own food
Question:4:- Which is the correct sequence of parts in human alimentary canal?
Answer: (d) Mouth â†’ oesophagus â†’ stomach â†’ small intestine â†’ large intestine
Question:5:- If salivary amylase I s lacking in the saliva, which of the following events in the mouth cavity will be affected?
Answer: (b) Starch breaking down into sugars
Question:6. The inner lining of stomach is protected by one of the following from hydrochloric acid. Choose the correct one
Answer: (b) Mucus
Question:7. Which part of alimentary canal receives bile from the liver?
Answer: (b) Small intestine
Question:8. A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
Answer: (d) Starch
Question:9. In which part of the alimentary canal food is finally digested?
Answer: (d) Small intestine
Question:10. Choose the function of the pancreatic juice from the following
Answer: (d) Trypsin digests proteins and lipase emulsified fats
Question:11. When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
Answer: (b) Carbon dioxide
Question:12. The correct sequence of anaerobic reactions in yeast is
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