Life Processes Quiz | Life Processes Objective Type Questions and Answers

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Questions
21 In which of the following groups of organisms, food material is broken down outside the body and absorbed?
A Mushroom, green plants, Amoeba
B Yeast, mushroom, bread mould
C Paramecium, Amoeba, Cuscuta
D Cuscuta, lice, tapeworm

Answer: Yeast, mushroom, bread mould
22 Select the correct statement
A Heterotrophs do not synthesize their own food
B Heterotrophs utilize solar energy for photosynthesis
C Heterotrophs synthesize their own food
D Heterotrophs are capable of converting carbon dioxide and water carbohydrates

Answer: Heterotrophs do not synthesize their own food
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23 If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?
A Proteins breaking down into amino acids
B Starch breaking down into sugars
C Fats breaking down into fatty acids and glycerol
D Absorption of vitamins

Answer: Starch breaking down into sugars
24 Which part of alimentary canal receives bile from the liver?
A Stomach
B Small intestine
C Large intestine
D Oesophagus

Answer: Small intestine
25 In which part of the alimentary canal food is finally digested?
A Stomach
B Mouth cavity
C Large intestine
D Small intestine

Answer: Small intestine
26 Choose the function of the pancreatic juice from the following
A Trypsin digests proteins and lipase carbohydrates
B Trypsin digests emulsified fats and lipase proteins
C Trypsin and lipase digest fats
D Trypsin digests proteins and lipase digests emulsified fats droplets

Answer: Trypsin digests proteins and lipase digests emulsified fats droplets
27 When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
A Oxygen
B Carbon dioxide
C Nitrogen
D Water vapour

Answer: Carbon dioxide
28 Which is the correct sequence of air passage during inhalation?
A Nostrils → Larynx Pharynx → Trachea → Lungst
B Nasal passage → Trachea → Pharynx → Larynx → Alveoli
C Larynx → Nostrils → Pharynx → Lungs
D Nostrils → Pharynx → Larynx → Trachea → Alveoli

Answer: Nostrils → Pharynx → Larynx → Trachea → Alveoli
29 During respiration exchange of gases take place in
A Trachea and larynx
B Alveoli of lungs
C Alveoli and throat
D Throat and larynx

Answer: Alveoli of lungs
30 Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by
A Labeo, Chameleon, Salamander
B Hippocampus, Exocoetus, Anabas
C Hyla, Rana, Draco
D whale, dolphin, turtle

Answer: Hippocampus, Exocoetus, Anabas
31 In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
A Pisces and amphibians
B Amphibians and reptiles
C Amphibians only
D Pisces only

Answer: Pisces only
32 The filtration units of kidneys are called
A Ureter
B Urethra
C Neurons
D Nephrons

Answer: Nephrons
33 The internal (cellular) energy reserve in autotrophs is
A Glycogen
B Protein
C Starch
D Fatty acid

Answer: Starch

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