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WorksheetsNcert class 10th chapter Life processes
Total questions: 15
Worksheet time: 5mins
The contraction and expansion movement of the walls of the food pipe is called:
a) Translocation
b) transpiration
c) Peristaltic movement
d) Digestion
What are the products obtained by anaerobic respiration in plants?
(a) Lactic acid + energy
b) Carbon dioxide + water + energy
(c) Ethanol + carbon dioxide + energy
d) Pyruvate
The respiratory pigment in human beings is:
(a) Carotene
b) chlorophyll
c ) hemoglobin
d) mitochondria
The opening and closing of the stomatal pore depend upon:
a) temperature
b) Oxygen
c) water in guard cells
d) concentration of carbon dioxide
The image shows the transport of gases in the body through the heart and lungs.
Which of the following option shows the transport of oxygen to the cell correctly?
(a) Lungs →pulmonary vein →left atrium →left ventricle →aorta → body cells
(b) Lungs →pulmonary vein →right atrium →right ventricle → aorta → body cells
(c) Lungs →pulmonary artery →left atrium → left ventricle → vena cava → body cells
(d) Lungs →pulmonary artery →right atrium → right ventricle→ vena cava → body cells
What is the percentage of oxygen in the expired air when a person is resting?
(a) 12%
b) 16%
c) 20%
d) 24%
Which of the following is the correct sequence of body parts in the human alimentary canal?
(a) Mouth → stomach → small intestine → large intestine → oesophagus
(b) Mouth → oesophagus → stomach → small intestine → large intestine
(c) Mouth → stomach → oesophagus → small intestine → large intestine
(d) Mouth → oesophagus → stomach → large intestine → small intestine
Name the acid present in vinegar.
a) acetic acid
b) citric acid
C) oxalic acid
d) hydrochloric acid
When the right ventricle in the human heart contracts, the blood moves to:
a) Aorta
b) brain
c) lungs
d) pulmonary artery
Which of the following gases makes the most stable combination with the haemoglobin of red blood cells?
A)
CO2
b)CO
c) O2
d) N2
The salivary glands secrete ?
a) Amylase
b) pepsin
c) trypsin
d) bile juice
In normal blood pressure 120/80 the denominator indicates ........... pressure.
a) systolic
b) diastolic
c) both A& B
d) None of the above
Which of the following is not a characteristic of good respiratory surface?
a) thin and moist
b) Large surface area
c) close to oxygen and gas transport
d ) thick and dry surface
The main waste component present in the blood, that needs to be filtered when the blood passes through the dialysing fluid of a dialysis machine is:
a) cellulose
b) Glucose
c) water
d) urea
Blood pressure in the veins is lower than that of arteries. The best hypothesis to explain this is that
a) Capillaries offer resistance to the blood flow
b) Veins are farther from the heart
c) Most veins carry blood up-hill
d) Veins have thinner walls than arteries
