NCERT Solutions for Class 7 Science Chapter 11 Transportation in Animals and Plants

NCERT Solutions for Class 7 Science Chapter 11 – Transportation in Animals and Plants is one of the important study materials for the students of Class 7. In 7th Class, students are introduced to lots of new concepts which are essential to understand the topics that will be taught in class 8. To score good marks in Class 7 Science examinations, students should try to solve the NCERT Solutions provided at the end of each chapter.

Here, we have provided the NCERT Solutions for Class 7 Science Chapter 11 in PDF for better accessibility, understanding and clarification, along with the practice papers, worksheets and revision notes.

Introduction to Transportation in Animals and Plants Class 7

Transportation in Animals and Plants Chapter deals with the transport of food, water and gases to various parts of the body. Along with these, the transport of waste products towards kidney and intestine is introduced in detail in Chapter 11 of Class 7 CBSE Science textbook. This entire system of transportation is termed as a circulatory system.

Important topics covered in NCERT Solutions for Class 7 Science Chapter 11 Transportation in Animals and Plants

1. Circulatory system
2. The excretory system in animals
3. The transportation system in Plants

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Exercise Questions

1. Match structures given in Column I with functions given in Column II.

Solution:

2. Fill in the blanks.

(i) The blood from the heart is transported to all parts of the body by the .

(ii) Haemoglobin is present in cells.

(iii) Arteries and veins are joined by a network of .

(iv) The rhythmic expansion and contraction of the heart is called .

(v) The main excretory product in human beings is .

(vi) Sweat contains water and .

(vii) Kidneys eliminate the waste materials in the liquid form called .

(viii) Water reaches great heights in the trees because of suction pull caused by .

Solution:

(i) The blood from the heart is transported to all parts of the body by the arteries .

(ii) Haemoglobin is present in red blood cells.

(iii) Arteries and veins are joined by a network of capillaries.

(iv) The rhythmic expansion and contraction of the heart is called heartbeat.

(v) The main excretory product in human beings is urea .

(vi) Sweat contains water and salts .

(vii) Kidneys eliminate the waste materials in the liquid form called urine .

(viii) Water reaches great heights in the trees because of suction pull caused by transpiration .

3. Choose the correct option:

(a) In plants, water is transported through

(i) xylem

(ii) phloem

(iii) stomata

(iv) root hair

(b) Water absorption through roots can be increased by keeping the plants

(i) in the shade

(ii) in dim light

(iii) under the fan

(iv) covered with a polythene bag

Solution:

a) i) Xylem

b) iii) under the fan

4. Why is transport of materials necessary in a plant or in an animal? Explain.

Solution:

Transport of materials is necessary in a plant or an animal for the following reasons:

• To transport food to various parts of the plant
• Animals need to transport wastes to parts from where they can be removed.

5. What will happen if there are no platelets in the blood?

Solution:

If there are no platelets, then blood will not clot as platelets release blood clotting factor at the site of injury and stops further bleeding.

6. What are stomata? Give two functions of stomata.

Solution:

Tiny pores present on the leaf surface are known as stomata.

Functions of stomata

• Helps in exchange of gases
• Evaporation of water through leaves occurs due to stomata.

7. Does transpiration serve any useful function in the plants? Explain.

Solution:

Transpiration serves the following functions in plants

• It helps in lowering temperature of plants, thus preventing heat injury of plants.
• Helps in transpiration pull, which helps in raining water in higher plants.
• It also causes loss of water absorbed by plants.

8. What are the components of blood?

Solution:

Red blood cells, white blood cells, platelets and plasma.

9. Why is blood needed by all the parts of a body?

Solution:

Blood is a significant part of transport system in our body, and we need blood for the following reasons:

• For the transport of oxygen to all parts of our body
• To expel out carbon dioxide from our body
• To transmit heat thus helping in the regulation of body temperature.
• It is required to fight out infections and diseases.

10. What makes the blood look red?

Solution:

Haemoglobin, a red pigment present in the blood makes it look red.

11. Describe the function of the heart.

Solution:

The heart is an organ which beats continuously to act as a pump for the transport of blood, which carries other substances with it. The heart has four chambers. The two upper chambers are called the atria (singular: atrium), and the two lower chambers are called the ventricles. The partition between the chambers helps to avoid mixing up of blood-rich in oxygen with the blood-rich in carbon dioxide. Blood flows from the heart to the lungs and back to the heart from where it is pumped to the rest of the body.

12. Why is it necessary to excrete waste products?

Solution:

When our cells perform their functions, certain waste products are released. These are toxic and hence need to be removed from the body.

13. Draw a diagram of the human excretory system and label the various parts.

Solution:

Students studying in Class 7 are advised to follow good study materials. NCERT textbooks are one of the most preferred study materials for the 7th standard students.

To score good marks in the examination students should also practise Class 7 previous year Science question papers and sample papers. Solving previous year question papers and sample papers will help the students to know about the types of questions asked in the examination and the marking scheme.

Important topics covered in NCERT Solutions for Class 7 Science Chapter 11 Transportation in Animals and Plants

1. Circulatory system
2. The excretory system in Animals
3. The transportation system in Plants

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Students are advised to solve the textbook questions thoroughly before appearing for the annual exam. The doubts which arise during class hours can also be clarified by using the solutions designed by the faculty at CoolGyan’S. Self learning abilities are improved among students which helps them to understand new concepts and build a strong foundation of basic topics.