# NCERT Exemplar Solutions Class 7 Science Solutions for Transportation in Animals and Plants - Exercise in Chapter 11 - Transportation in Animals and Plants

Question 20 Transportation in Animals and Plants - Exercise

Match the parts of the heart in Column I with the direction of flow of blood in Column II.

Column 1 Column 2
(i) Right ventricle (a) Pushes blood into the pulmonary artery.
(ii) Pulmonary veins (b) Take deoxygenated blood from the heart to lungs.
(iii) Left atrium (c) Receives blood from different parts of the body.
(iv) Pulmonary arteries (d) Bring oxygenated blood from lungs to the heart.
(v) Left ventricle (e) Pushes blood into the aorta.
(vi) Right auricle (f) Receives deoxygenated blood from the pulmonary veins.

column 1 Column 2
(i) Right ventricle (a) Pushes blood into the pulmonary artery.
(ii) Pulmonary veins (d) Bring oxygenated blood from lungs to the heart.
(iii) Left atrium (f) Receives deoxygenated blood from the pulmonary veins.
(iv) Pulmonary arteries (b) Take deoxygenated blood from the heart to lungs.
(v) Left ventricle (e) Pushes blood into the aorta.
(vi) Right auricle (c) Receives blood from different parts of the body.

Video transcript
"hello everyone welcome to lido this is priya and here we have a question about the structure of an atom in carbon so carbon and sodium so let us look into this write the distribution of electrons in carbon and sodium so before describing about the distribution of electron in carbon and sodium we need to know the atomic number of carbon and sodium so as we know the formula uh symbol of carbon is c and sodium is n and e so coming to the atomic number of carbon it is 6 and atomic number of sodium it is 11. so as we know the capacity of orbits present in an atom so the distribution of these electrons in this carbon atom will be follows like this in the first shell of electrons there will be two electrons in the first shell and in the second shell l will have four electrons so total six so this is a distribution of electrons in a carbon so in the first shell there will be two and in the second shell there will be four so coming to the distribution of electrons in and sodium atom so in the first shell we know the maximum capacity of a shell it is two and the second shell it is eight and in the third shell the remaining one electron will fix us there so total it is 11 so this is about the distribution of electrons in sodium and carbon so in sodium the first shell is filled with two second shell is filled with eight and third shell is filled with one in carbon the first shell is filled with two second shell is filled with four hope you understand this video if you like my video please subscribe to our leader channel and if you have any doubts you can keep a message in comment box thank you"
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