CBSE Class 7 Science Transportation in Animals and Plants Worksheet with Solution by Expert Science Mam. Students of 7th Grade can solve this worksheet for extra preparation before exam. Private Teacher or Guardians of the Students can copy all the questions of this chapter and will match after solve their students.
Transportation in Animals and Plants Class 7 Worksheet
Worksheet for Chapter No.11): – Transportation in Animals and Plants
The following questions are important for your exams for 1 mark 2 mark or 5 marks. First solve the questions on your own and then saw the solution for understanding it better.
Practice worksheet for class 7
Section A
Q.1.) Why blood is red in color?
→ The blood is red in color due to the presence of red pigment called as hemoglobin.
2.) What is the circulatory system and which materials does it transport?
→ The organ system of the body that is responsible for the transport of material throughout the body is called circulatory system. The material transported our nutrients, Oxygen and carbon dioxide, cells .
Q.3.) What is the medium of transportation in the circulatory system and write the primary parts of circulatory system?
→ The medium of transportation is blood and the primary part of the circulatory system are heart, arteries and veins.
Q.4.) Define blood?
→ Blood is a fluid tissue that transport nutrients and oxygen to the cells and carries away carbon dioxide and other waste products in our body.
Q.5.) Write the composition of blood?
1.) The fluid part of the blood is called as plasma and has various salts and nutrients dissolved in it.
2.) Blood cells are suspended in plasma and they are red blood cells , white blood cells and platelets.
Q.6.) What is the composition of plasma?
→ Plasma is liquid component of the blood in which blood cells are suspended. Plasma mostly made up of water up to 95% and contains dissolved nutrients carbon dioxide and oxygen.
Q.7.) What is the function of RBC ?
→ The function of RBC is to transport the oxygen throughout the body.
Q.8.) Define the following terms?
1.) Arteries – arteries are blood vessels that carry oxygenated blood to the cells and tissues of our body. They carry blood from heart to the tissues.
2.) Veins – veins are blood vessels that carry away deoxygenated blood from the cells and tissues of our body. they carry blood from tissues to the heart.
Q.9.) What is pulmonary circuit?
→ The network of arteries and veins connecting the heart and lungs called as pulmonary circuit.
Q.10.) Where does the oxygenation of blood takes place?
→ The oxygenation of the blood takes place at alveoli in the lungs.
Q.11.) What do you mean by pulsation?
→ The heart periodically contracts and expands to pump blood into the arteries which also expands and contracts as the blood flows through them. This is called pulsation.
Q.12.) What is pulse rate?
→ The number of heart beats per minute is called as pulse rate.
Q.13.) What are the three types of circulation?
1.) Pulmonary circulation
2.) Systemic circulation
3.) Coronary circulation
Q.14.) What is the advantage of closed circulatory system?
→ The advantage of closed circulatory system is that it has more pressure available in the system and blood can reach at each part of body quickly. These are translating to a much faster metabolic rate and a quick movement in organisms with closed circulatory system.
Q.15.) What is hypertension and hypotension?
1.) Hypertension is high blood pressure it occurs when blood travels through blood vessels with more force than normal. And average healthy human has a blood pressure of 120 to 80 Hg.
2.) Hypotension is low blood pressure. It is a condition where blood flows through blood vessels with low pressure. Healthy blood pressure is 120 to 80 HG anything lower than this is called as hypotension.
Q.16.) What is excretion and how much amount of urine , the urinary bladder holds ?
→ The process of waste products from the cells of living organism is called excretion. The urinary bladder holes about 300 to 500 ml of urine for a while before the urge to empty occurs. .
Q.17.) What do you mean by Osmosis?
→ Osmosis is the movement of solvent molecules from a region of lower solute concentration to a region of higher solid concentration through a semi permeable membrane.
Q.18.) Explain the process of transpiration ?
Transpiration is the loss of water in the form of water vapour from stomata present on leaves. This process also helps the plant absorb and distribute water through their roots. Transpiration exerts astrology effect and the water moves up against gravity in tubes made of xylem cells.
Q.19.) Which is responsible for transportation in plants and how ?
→ The water and minerals are transported in plants by two types of conducting tissues named as xylem and phloem.
1.) Xylem is long nonliving tube running from roots to the leaves through the stem. The water is absorbed by root hair and undergoes cell to cell movement by osmosis until it reaches the xylem. This water is transported through xylem vessels to the leaves and evaporated by the process of transpiration.
2.) Phloem is responsible for transportation of food molecules like nutrients and carbohydrates produced by leaves to the areas of plant that are metabolically active.
Q.20.) State the difference between xylem and phloem ?
Xylem |
Phloem |
Definition |
Definition |
Xylem tissues are the tubular shaped structure, with the absence of cross walls. This tissue resembles the shape of star. |
Phloem tissues are tubular shaped, elongated, structures with the presence of walls with sleeve tubes. |
Location |
Location |
It is located in the center of the vascular bundle. |
It is located on the outer side of the vascular. |
Fibers |
Fibers |
Xylem fibres are smaller |
Phloem fibres are larger. |
Found in : They are present in roots, stems, and leaves. |
Found in : They are presents in stems and leaves, which later transports and grow in roots, fruits and seeds. |