Q. Trachea do not collapse when there is not much air because they are
✅ Correct Answer: (B)
having cartilaginous rings
Life Processes MCQs with answers
Dear candidates you will find MCQ questions of 10th Class - Biology | Chapter: Life Processes here. Learn these questions and prepare yourself for coming examinations. You can check the right answer of any question by clicking the option or by clicking view answer button.
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Q. Which of the following help in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid?
✅ Correct Answer: (A)
Mucus
Q. Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
✅ Correct Answer: (D)
Lactic acid
Q. In which mode of nutrition an organism de-rives its food from the body of another living organism without killing it?
✅ Correct Answer: (B)
Parasitic nutrition
Q. Roots of the plants absorb water from the soil through the process of:
✅ Correct Answer: (C)
osmosis
Q. Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
✅ Correct Answer: (A)
Starch breaking down into sugars.
Q. Which region of the alimentary canal absorbs the digested food?
✅ Correct Answer: (B)
Small intestine
Q. The contraction and expansion movement of the walls of the food pipe is called:
✅ Correct Answer: (C)
peristaltic movement
Q. When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains
✅ Correct Answer: (C)
starch
Q. The exit of unabsorbed food material is regu-lated by
✅ Correct Answer: (D)
anal sphincter
Q. During contraction of heart, what prevents backflow of blood?
✅ Correct Answer: (C)
Valves in heart
Q. When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
✅ Correct Answer: (B)
carbon dioxide
Q. What prevents backflow of blood inside the heart during contraction?
✅ Correct Answer: (A)
Valves in heart
Q. In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
✅ Correct Answer: (D)
Pisces only
Q. Which of the following equations is the summary of photosynthesis?
✅ Correct Answer: (C)
6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2 + 6H2O
Q. Which is the first enzyme to mix with food i the digestive tract?
✅ Correct Answer: (C)
Amylase
Q. Lack of oxygen in muscles often leads to cramps among cricketers. This results due to
✅ Correct Answer: (D)
conversion of pyruvate to lactic acid
Q. Name the substances whose build up in the muscles during vigorous physical exercise may cause cramps?
✅ Correct Answer: (B)
Lactic acid + Energy
Q. The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in
✅ Correct Answer: (B)
mitochondria
Q. In which of the following group/ groups of animals, heart does not pump oxygenated blood to different parts of the body?
✅ Correct Answer: (A)
Pisces only
Q. What are the products obtained by anaerobic respiration in plants?
✅ Correct Answer: (C)
Ethanol + Carbon dioxide + Energy
Q. Name the pores in a leaf through which respi-ratory exchange of gases takes place.
✅ Correct Answer: (D)
Stomata
Q. Which plant tissue transports water and min-erals from the roots to the leaf?
✅ Correct Answer: (A)
Xylem
Q. A blood vessel which pumps the blood from the heart to the entire body:
✅ Correct Answer: (A)
artery
Q. Name a circulatory fluid in the human body other than blood.
✅ Correct Answer: (C)
Lymph
Q. Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by which of the following:
✅ Correct Answer: (D)
hippocampus, exocoetus, anabas
Q. Name the tube which connects the kidneys to the urinary bladder.
✅ Correct Answer: (D)
Ureter
Q. Which part of nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?
✅ Correct Answer: (A)
Tubule
Q. The procedure used for cleaning the blood of a person by separating urea from it is called:
✅ Correct Answer: (C)
dialysis
Q. Which is the correct sequence of body parts in the human alimentary canal?
✅ Correct Answer: (B)
Mouth → oesophagus → stomach → small intestine → large intestine
Q. Identify the correct path of urine in the human body.
✅ Correct Answer: (D)
Kidney → ureter → urinary bladder → urethra
Q. Which of the following are chiefly digested in the stomach?
✅ Correct Answer: (B)
Proteins
Q. The part of the digestive system where no digestion takes place is
✅ Correct Answer: (D)
oesophagus
Q. Name the part of alimentary canal receiving bile from the liver.
✅ Correct Answer: (C)
Small intestine
Q. he fermentation of glucose by yeast normally yields
✅ Correct Answer: (D)
lactic acid, CO7 and 2 ATP
Q. A large quantity of one of the following is removed from our body by lungs:
✅ Correct Answer: (A)
CO2 and H20
Q. In respiration, air passes through
✅ Correct Answer: (B)
Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles
Q. A biochemical compound that readily combines with oxygen and distributes it throughout the human body is
✅ Correct Answer: (C)
haemoglobin
Q. The process in which loss of water takes place in the form of water vapour through stomata is called
✅ Correct Answer: (B)
transpiration
Q. In a closed circulatory system, blood is completely enclosed within
✅ Correct Answer: (B)
heart
Q. Blood pressure is measured by an instrument called
✅ Correct Answer: (B)
sphygmomanometer
Q. Which of the following statements is not correct?
✅ Correct Answer: (C)
Human kidney has about 1 million nephridia
Q. Which part of alimentary canal receives bile from the liver?
✅ Correct Answer: (B)
Small intestine
Q. When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of
✅ Correct Answer: (B)
carbon dioxide
Q. The opening and closing of the stomatal pore depends upon
✅ Correct Answer: (C)
water in guard cells
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