MCQ TEST ON LIFE PROCESS
Quiz by Agalyadevi N
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- Q1
1. Choose the forms in which most plants absorbnitrogen:
(b) 2 and 3
(b) 2 and 3
(a) 1 and 2
30s - Q2
Which of the following statements about the autotrophs is incorrect?
(c) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
(a) They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll
They convert carbon dioxide and water into carbohydrates in the absence of sunlight
They constitute the first trophic level in food chains
30s - Q3
3.3. Select the correct statement
(c) Heterotrophs synthesise their own food
(a) Heterotrophs do not synthesise their own food
(a) Heterotrophs do not synthesise their own food
(b) Heterotrophs utilise solar energy for photosynthesis
30s - Q4
4. Which is the correct sequence of parts in human alimentary canal?
Mouth ®oesophagus ® stomach ® large intestine ® small intestine
Mouth ® stomach ® oesophagus ® small intestine ® large intestine
Mouth ® oesophagus ® stomach ® small intestine ® large intestine
Mouth ® oesophagus ® stomach ® small intestine ® large intestine
30s - Q5
5. If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?
(c) Fats breaking down into fatty acids and glycerol
(b) Starch breaking down into sugars
(b) Starch breaking down into sugars
(a) Proteins breaking down into amino acids
30s - Q6
6. The inner lining of stomach is protected by one of the following from hydrochloric acid. Choose the correct one
Bile
Mucus
Pepsin
Mucus
30s - Q7
7.A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
starch
complex protein
fats
starch
30s - Q8
8.Vocal cords occur in:
glottis
pharynx
larynx
larynx
30s - Q9
9.How many pairs of salivary glands are found in humans?
three
three
two
one
30s - Q10
10.Which cell organelle is involved in breakdown of glucose to produce energy for metabolicactivities?
Mitochondria
Mitochondria
muscle cells
Endoplasmic reticulum
30s - Q11
11.In which part of the alimentary canal food is finally digested?
Stomach
Small intestine
Small intestine
Large intestine
30s - Q12
12.Choose the function of the pancreatic juice from the following
trypsin and lipase digest fats
trypsin digests proteins and lipase carbohydrates
trypsin digests proteins and lipase emulsified fats
trypsin digests proteins and lipase emulsified fats
30s - Q13
13.When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
nitrogen
carbon dioxide
oxygen
carbon dioxide
30s - Q14
14.The correct sequence of anaerobic reactions in yeast is
Glucose Pyruvate Lactic acid
Glucose Pyruvate Ethanol + Carbondioxide
Glucose Pyruvate Ethanol + Carbondioxide
mitochondria pyruvic acids
30s - Q15
16. Only two of the following Statementsaccurately describe what happens in the mouth.
1. Amylase breaksdown large starchmolecules into smallermaltose molecules.
2. Chewing increasesthe surface area of food for digestion.
3. Saliva emulsifies fats into smaller droplets.
4. Teeth breakuplarge insoluble moleculesinto smaller solublemolecules.
which statements are correct?
1 and 2
3 and 4
2 and 3
1 and 2
30s