NCERT Solutions for Class 7 Science Chapter 11 Transportation in Plants and Animals
You will find NCERT Solutions for Class 7 Science Chapter 11 Transportation in Plants and Animals here will be quite helpful in making learning process and effortless and more effective. It will be useful in expanding student's horizon as it cover variety of questions. NCERT Solutions is an effective method for learning since you can be le to learn a lot within a short time. These are helpful in building a great foundation of concepts and make easy for the students to understand basics.
Chapter 11 Transportation in Plants and Animals Class 7 Science NCERT Questions and Answers help students grasp basic concepts better and faster. You will get step by step and to the points answers of every question given inside the textbook. Your marks play an important role in shaping future thus these NCERT Solutions for Science will become your comprehensive guide in easy learning and evaluating yourself.
NCERT Solutions for Class 7 Science Chapter 11 Transportation in Plants and Animals
With the help of NCERT Solutions for Class 8 Science Chapter 11, you can figure out the latest marking scheme and prepare your answers as per the demand. Students will develop the ability to identify what improvements and changes need to be made. It will help in developing a wider body of knowledge when you’re brainstorming a solution.
| Study Material for Class 7 Science Chapter 11 Transportation in Plants and Animals |
|---|
|
1. Match structures given in Column I with functions given in Column II.
| Column I | Column II |
| (i) Stomata | (a) Absorption of water |
| (ii) Xylem | (b) Transpiration |
| (iii) Root hairs | (c) Transport of food |
| (iv) Phloem | (d) Transport of water |
| - | (e) Synthesis of carbohydrates |
Answer
| Column I | Column II |
| (i) Stomata | (b) Transpiration |
| (ii) Xylem | (d) Transport of water |
| (iii) Root hairs | (a) Absorption of water |
| (iv) Phloem | (c) Transport of food |
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 __________.
Answer
(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 heart beat.
(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.
Page No: 132
3. Choose the correct option:
(a) In plants, water is transported through
(i) xylem
(ii) phloem
(iii) stomata
(iv) root hair
► (i) xylem
(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
► (iii) under the fan
4. Why is transport of materials necessary in a plant or in an animal? Explain.
Answer
(i) Transport of materials in a plant or in a animal is necessary for carrying out metabolic activities.
(ii) Transportation of materials help in the supply of nutrients and energy to each every parts of animals and plants need energy which they get from the transported materials.
(iii) Also, the waste materials produced during metabolic activities are toxic and hence need to be removed from the body by transportation.
5. What will happen if there are no platelets in the blood?
Answer
Platelets help in the clotting of blood at the time of injury. If there would be no platelets, then there would be no clotting of blood and person may die due to excess flow of blood from the body.
6. What are stomata? Give two functions of stomata.
Answer
The tiny holes or openings present under the leaves of the plants is called stomata.
Two functions of stomata:
(i) It helps in breathing of the plants.
(ii) It helps in exchange of gases takes place inside the plants cells.
7. Does transpiration serve any useful function in the plants? Explain.
Answer
(i) The excess water absorbed by the root system of the plants lost in the form of water vapour to their surroundings by the process of transpiration.
(ii) It also in transport of absorbed water to the leaves of plants from the roots for photosynthesis and helping the plants keeping erect.
(iii) It also produces cooling effect for the plants.
8. What are the components of blood?
Answer
The main components of blood are:
(i) Plasma
(ii) Red blood cells (RBC)
(iii) White blood cells (WBC)
(iv) Platelets
9. Why is blood needed by all the parts of a body?
Answer
Blood is needy by all the parts of a body because:
(i) It carries oxygen to all the parts of the body and also carries carbon dioxide back to the lungs.
(ii) It carries digested food to various parts of the body for absorption.
(iii) It contains platelets which help in the clotting of blood.
(iv) It helps in maintaining constant body temperature.
(v) It transports hormones and help in fighting the body with germs and bacteria.
10. What makes the blood look red?
Answer
The presence of red pigment called haemoglobin in red blood cells (RBC) makes the blood look red.
11. Describe the function of the heart.
Answer
Functions of the heart:
(i) It helps in the circulation of oxygen rich blood throughout the body by the pumping.
(ii)It receives oxygenated blood from the lungs.
(iii) It also pumps back the blood carrying carbon dioxide to the lungs.
(iv) It shows rhythmic contraction and relaxation for movement of blood.
12. Why is it necessary to excrete waste products?
Answer
The waste materials produced during the metabolic activities are toxic to the body and must not be accumulated inside and therefore it has to be excreted out from the body by the process of excretion.
13. Draw a diagram of the human excretory system and label the various parts.
Answer
Go Back To NCERT Solutions for Class 7 Science
Chapter 11 Transportation in Plants and Animals Class 7 Science NCERT Solutions
Chapter 11 Transportation in Plants and Animals NCERT Questions and Answers can be used to enrich knowledge and make lessons for learners more exciting. In the examinations, you will can come up with better answers and lay out the main point effectively. You will get step by step and to the points answers of every question given inside the textbook.
Class 7 Science Chapter 11 Transportation in Plants and Animals NCERT Questions and Answers - Topics
• Circulatory System
→ Blood
→ Blood vessels
→ Heart
→ Heartbeat
• Excretion In Animals
→ Excretory system in humans
• Transport Of Substances In Plants
→ Transport of water and minerals
→ Transpiration
Class 7 Science Chapter 11 Transportation in Plants and Animals NCERT Questions and Answers - Notes
• Blood is the fluid which flows in blood vessels. It transports substances like digested food from the small intestine to the other parts of the body. It carries oxygen from the lungs to the cells of the body. It also transports waste for removal from the body.
• One type of cells are the red blood cells (RBC) which contain a red pigment called haemoglobin. Haemoglobin binds with oxygen and transports it to all the parts of the body and ultimately to all the cells.
• The blood also has white blood cells (WBC) which fight against germs that may enter our body.
• The clot is formed because of the presence of another type of cells in the blood, called platelets.
• Blood vessels are of three main types: arteries, veins and capillaries.
→ Arteries carry oxygen-rich blood from the heart to all parts of the body. The arteries have thick elastic walls.
→ Veins are the vessels which carry carbon dioxide-rich blood from all parts of the body back to the heart. The veins have thin walls.
→ On reaching the tissues, they divide further into extremely thin tubes called capillaries. The capillaries join to form veins which empty into the heart.
→ At certain locations in the body, a pulse, similar to heart beat can be felt. This happens because of blood rushing in with every heart beat. The pulse rate is same as the heart rate. Pulse can be felt near the wrist, neck, ankle, etc.
• 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 is located in the chest cavity with its lower tip slightly tilted towards the left.
→ To avoid the blood rich in oxygen and the blood rich in carbon dioxide mix with each other, 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 walls of the heart are made up of the most powerful muscles. Their rhythmic contraction and relaxation constitute heartbeats. Heartbeat can be recognised by placing the palm on the left side of the chest.
• The process of removal of wastes produced in the cells of the living organisms is called excretion. The parts involved in excretion form the excretory system.
→ The excretory system of humans consists of the kidneys, the ureters, the urinary bladder and the urethra.
→ When the blood reaches the two kidneys, it contains both useful and harmful substances. The useful substances are absorbed back into the blood. The wastes dissolved in water are removed as urine. From the kidneys, the urine goes into the urinary bladder through tube-like ureters. It is stored in the bladder and is passed out through the urinary opening at the end of a muscular tube called urethra.
• Plants absorb water and minerals by the roots. The roots have root hair. The root hair increase the surface area of the root for the absorption of water and mineral nutrients dissolved in water. The root hair is in contact with the water present between the soil particles.
• Plants have pipe-like vessels to transport water and nutrients from the soil. The vessels are made of special cells, forming the vascular tissue.
→ The vascular tissue for the transport of water and nutrients in the plant is called the xylem.
→ The vascular tissue for the transport of foods in the plant is called the phloem.
• The process of releasing water vapour from the leaves into the atmosphere through the stomata is called transpiration.
Chapter 11 Transportation in Plants and Animals Class 7 Science Questions and Answers - MCQ Questions with answers
1. A kidney, ureter and urinary bladder together are called:
(a) Respiratory system
(b) Excretory system
(c) Circulatory system
(d) Reproductive system
► (b) Excretory system
2. An adult human being normally passes about _____________ of urine in 24 hours.
(a) 0.5 to 0.85 L
(b) 2 to 5 L
(c) 2 to 2.5 L
(d) 1 to 1.8 L
► (d) 1 to 1.8 L
3. Which of the following groups represent correctly the substances that the capillaries exchange between blood and tissues?
(a) Oxygen, carbon dioxide, RBC, food
(b) Oxygen, carbon dioxide, food, waste products
(c) Water, plasma, WBC, RBC
(d) Oxygen, carbon dioxide, WBC, RBC
► (b) Oxygen, carbon dioxide, food, waste products
4. The clotting of blood is to
(a) Slow down the movement of blood inside the blood vessel.
(b) Trap oxygen inside the blood so that it may be transported more easily.
(c) Seal up wounds to avoid loss of blood
(d) All the above are correct
► (c) Seal up wounds to avoid loss of blood
5. The blood vessel which carries blood from lungs to heart is called
(a) Pulmonary artery
(b) Coronary artery
(c) Renal artery
(d) Pulmonary vein
► (d) Pulmonary vein
6. The process by which the oxygenated blood moves from left auride to left ventricle and then through aorta to all parts of the body is known as
(a) Extracellular circulation
(b) Intracellular circulation
(c) Systemic circulation
(d) Pulmonary circulation
► (d) Pulmonary circulation
7. Functional unit of kidney is
(a) Glomerulus
(b) Nephron
(c) Bowman’s capsule
(d) Neuron
► (b) Nephron
8. The part of blood which does not have a nucleus.
(a) RBC
(b) WBC
(c) Platelets
(d) Plasma
► (a) RBC
9. Blood cells that protect us from infection are called
(a) White blood cells
(b) Erythrocytes
(c) Thrombocytes
(d) Red blood cells
► (a) White blood cells
10. Heart rate increases during
(a) Bathing and eating
(b) Sleep and eating
(c) Exercise and fever
(d) Rest and indigestion
► (c) Exercise and fever
NCERT Textbook will provide you with a lot of interesting topics thus these NCERT Solutions for Class 7 Science for Chapter 11 will be useful in understanding in depth concepts well. Through these NCERT Solutions, students should not waste time and adopt a strategy that helps them operate and learn at maximum efficiency. It will serve as beneficial tool that can be used to recall various questions any time.