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Ncert Exemplar Solutions Class 7 Science Transportation in Animals and Plants
Welcome to NCTB Solutions. Here with this post we are going to help 7th class students for the Solutions of NCERT Exemplar Class 7 Science Book, Unit 11, Transportation in Animals and Plants. Here students can easily find step by step solutions of all the problems for Transportation in Animals and Plants, Also here our Science teacher’s are solved all the questions with easily understandable language with proper guidance so that all the students can understand easily.
Transportation in Animals and Plants all Question Solutions :
Multiple Choice Questions :
Question no – (1)
The muscular tube through which stored urine is passed out of the body is called
The correct answer is option – (c)
The muscular tube through which stored urine is passed out of the body is called Urethra.
Question no – (2)
They are pipe-like, consisting of a group of specialised cells. They transport substances and form a two-way traffic in plants. Which of the following terms qualify for the features mentioned above?
The correct answer is option – (d)
The qualify term is Phloem tissue.
Question no – (3)
The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in
The appropriate option is – (d)
The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in Capillaries.
Question no – (4)
In which of the following parts of human body are sweat glands absent?
The answer is option – (c)
In human body are sweat glands absent in Lips.
Question no – (5)
In a tall tree, which force is responsible for pulling water and minerals from the soil?
The correct option is – (c)
Suction force is responsible for pulling water and minerals from the soil.
Question no – (6)
Aquatic animals like fish excrete their wastes in gaseous form as
The correct answer is alternative – (c)
Aquatic animals like fish excrete their wastes in gaseous form as Ammonia.
Very Short Answer Questions :
Question no – (7)
Veins carry carbon dioxide rich blood from all parts of the body so to prevent back flow of blood it is provided with a valve. The heart on the other hand pumps oxygen rich blood to the body parts with so much pressure that there is no chance of back flow. This way arteries ensure one way flow of blood.
Question no – (8)
The human heart is comprised of four chambers, the two upper side of the heart are called auricles and the two lower side are known as ventricles. This organs are separated by a muscle which prevents oxygenated and deoxygenated blood to mix with each other.
Question no – (9)
Heart is the organ which is located in the chest cavity with its lower tip slightly tilted towards the left.
Short Answer Questions :
Question no – (11)
The correct formation of the formation and removal of urine from the human body are –
• Blood containing useful and harmful substances reaches he kidneys for filtration.
• Useful substances are absorbed back into the blood.
• Wastes dissolved in water is filtered out as urine in the Kidneys.
• Ureters carry urine to the urinary bladder.
• Urine stored in urinary bladder is passed out through the urinary opening at the end of the urethra.
Question no – (12)
No, in most cases it will not grow since without the root hairs the plant will not be able to absorb much water to sustain the plant life. It sometimes happens that the plant is able to grow new roots and thus keeps growing.
Question no – (13)
(a) Pulmonary Artery is the only artery that carries carbon dioxide-rich blood.
(b) Pulmonary artery is still called an artery even though it does not carry oxygen rich blood because the main function of an artery is to carry blood away from the heart which the pulmonary artery still does.
Question no – (14)
When a person’s kidney stops working because of an infection or injury waste starts to accumulate in the blood. The process of periodically filtering a person’s blood with the help of an artificial kidney is known as dialysis.
Question no – (15)
(a) Carbon dioxide : – It is removed by exhalation with the help of lungs.
(b) Undigested food : – it is removed by egestion with the help of large intestine and anus.
(c) Urine : – It is removed by excretion with the help of kidneys.
(d) Sweat : – It is removed by perspiration with the help of skin.
Question no – (17)
The water is being pulled to the top of the building because the pump is pulling the water by using suction force. In the same way when the tree near the building transpires through its leaf it generates suction force which pulls the water from the ground and up to the upper part of the trees.
Long Answer Questions :
Question no – (18)
(i) → (a) Pushes blood into the pulmonary artery.
(ii) → (d) Bring oxygenated blood from lungs to the heart.
(iii) → (f) Receives deoxygenated blood from the pulmonary veins.
(iv) → (b) Take deoxygenated blood from the heart to lungs.
(v) → (e) Pushes blood into the aorta
(vi) → (c) Receives blood from different parts of the body.
Question no – (19)
(a) Circulatory system of animals : arteries , capillaries , veins and heart.
(b) Excretory system in humans : urethra , kidneys , ureter and urinary bladder.
(c) Transport of substances in plants : root hair, xylem and phloem.
Question no – (20)
Arteries carry oxygen-rich blood from the heart to all parts of the body and Veins carry carbon dioxide-rich blood from all parts of the body back to the heart. Veins have thin walls and Arteries have thick elastic walls. Blood flows at high pressure in Arteries. Valves are present in Veins which allow blood to flow only towards the heart. Arteries divide into smaller vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form Veins.
Question no – (21)
(a) Why did the bleeding stop?
= The wounds stopped to bleed after some time due to the clotting of blood.
(b) What would be the colour of the wounded area and why?
= The wounded area seems red in colour because of the clotting of blood.
(c) Which type of blood cells are responsible for clotting of blood?
= Platelets are responsible for clotting of blood.
Other Chapter Solutions :
👉 Wastewater Story