Which of the following statements about the autotrophs is incorrect?
In which of the following groups of organisms, food material is broken down outside the body and absorbed?
Select the correct statement
Which is the correct sequence of parts in human alimentary canal?
If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?
The inner lining of stomach is protected by one of the following from hydrochloric acid. Choose the correct one
Which part of alimentary canal receives bile from the liver?
A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
In which part of the alimentary canal food is finally digested?
Choose the function of the pancreatic juice from the following
When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
The correct sequence of anaerobic reactions in yeast is
Which of the following is most appropriate for aerobic respiration?
Which of the following statement(s) is (are) true about respiration?
(i) During inhalation, ribs move inward and diaphragm is raised
(ii) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air
(iii) Haemoglobin has greater affinity for carbon dioxide than oxygen
(iv) Alveoli increase surface area for exchange of gases
Which is the correct sequence of air passage during inhalation?
During respiration exchange of gases take place in
Which of the following statement (s) is (are) true about heart?
(i) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs
(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs
(iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts
(iv) Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body
What prevents backflow of blood inside the heart during contraction?
Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by
In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
Choose the correct statement that describes arteries.
The filtration units of kidneys are called
Oxygen liberated during photosynthesis comes from
The blood leaving the tissues becomes richer in
Which of the following is an incorrect statement?
The internal (cellular) energy reserve in autotrophs is
Which of the following equations is the summary of photosynthesis?
Choose the event that does not occur in photosynthesis
The opening and closing of the stomatal pore depend upon
Additional Information:
This quiz is based on Exemplar Problems and other important questions from the "Life Processes" chapter of the Science subject for CBSE NCERT Class 10 (X). It covers key concepts such as nutrition, respiration, transportation, and excretion in plants and animals. These questions are designed to help students strengthen their understanding and improve problem-solving skills. For more such resources, visit the official NCERT website.