Question Text
Question 1 :
The rhythmic expansion and contraction of the heart is called ______.
Question 2 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbb4f59b460d7261ec84.jpg' />
In the above figure, human excretory system is depicted. Label the parts 3 and 4.
Question 4 :
Name the organ which is located in the chest cavity with its lower tip slightly tilted towards the left.
Question 7 :
Name the process and the organ which help in removing sweat wastes from the body.
Question 8 :
Water reaches great heights in the trees because of suction pull caused by ______.
Question 9 :
What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?