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

Studying Class 7 Science Chapter 7 Transportation in Animals and Plants provides a solid understanding of vital life processes like the circulatory system, excretion in animals, and transport of substances in plants. This chapter explains how oxygen, nutrients, and waste products are transported in animals and plants. The NCERT Solutions for Class 7 Science Transportation in Animals and Plants help students understand topics like the role of the heart, kidneys, xylem, and phloem. These concepts build a foundation for advanced biological studies and have practical applications in health, nutrition, and environmental awareness.

1.0Download NCERT Solutions for Class 7 Science Chapter 7 - Free PDF

This article provides Class 7 Transportation in Animals and solutions in accordance with NCERT guidelines. By practising these solutions, students can build a solid foundation in biology and enhance their problem-solving skills, which will help them achieve good scores in board exams. For a deeper understanding, students can download the NCERT Solutions Class 7 Science Chapter 7 in PDF format from the link below. 

2.0Class 7 Science Chapter 7 Transportation in Animals and Plants: Important Topics

Before getting into the details of NCERT Solutions For Class 7 Science Chapter 7 Transportation in Animals and Plants, let's take a brief look at the topics and subtopics covered in this chapter of the NCERT Class 7 Science book:

Topics covered in this chapter:

1. Circulatory System: The circulatory system transports nutrients, gases, and wastes throughout the body using the heart, blood, and blood vessels.
2. Excretion in Animals: Excretion is the process by which animals remove harmful waste products from their bodies through organs like kidneys.
3. Transport of Substances in Plants: Plants transport water, minerals, and food through specialized tissues called xylem and phloem.

3.0NCERT Questions with Solutions for Class 7 Science Chapter 7 - Detailed Solutions

• Why does an athlete breathe faster and deeper than usual after finishing the race?

Ans. An athlete needs to supply extra energy to his muscle cells which have worked hard during running. For this, he breathes faster and deeper so that more oxygen is supplied to the cells. This speeds up the breakdown of food and as a result, more energy is released.

List the similarities and differences between aerobic and anaerobic respiration. Ans. Similarity between aerobic and anaerobic respiration: In both aerobic and anaerobic respiration, the food is broken down to release energy. Differences between aerobic and anaerobic respiration:

• Why do we often sneeze when we inhale a lot of dust-laden air?

Ans. Sneezing expels the foreign particles from the inhaled air, so that only clean air enters our body. It usually occurs because of the irritation in the upper breathing passage. This irritation happens when we inhale some unwanted particles and they get trapped in our nasal cavity. Smoke, dust, pollen, etc. are some of the unwanted particles that may cause sneezing. 4. Take three test-tube. Fill 3/4th of each with water. Label them A, B and C. Keep a snail in test-tube $A$, a water plant in test-tube B and in C, keep snail and plant both. Which test tube would have the highest concentration of ${\mathrm{CO}}_2$ ?

Ans.

Test tube A will have the highest concentration of ${\mathrm{CO}}_2$. This is because test tube A contains snail. Snail is an organism that breathes in ${\mathrm{O}}_2$ and breathes out ${\mathrm{CO}}_2$. Hence, ${\mathrm{CO}}_2$ concentration increases in test tube A .

Test tube B contains a water plant which takes in ${\mathrm{CO}}_2$ for food synthesis and gives out ${\mathrm{O}}_2$. Hence, more ${\mathrm{O}}_2$ concentration is found in test tube B.

Test tube C contains both a snail and a plant. The ${\mathrm{CO}}_2$ produced by the snail is utilized by the plant for its food synthesis and the ${\mathrm{O}}_2$ released by the plant is utilized by the snail for respiration. Therefore, test tube A has the highest concentration of ${\mathrm{CO}}_2$. 5. Tick the correct answer: (a) In cockroaches, air enters the body through (i) lungs (ii) gills (iii) spiracles (iv) skin (b) During heavy exercise, we get cramps in the legs due to the accumulation of - (i) carbon dioxide (ii) lactic acid (iii) alcohol (iv) water (c) Normal range of breathing rate per minute in an average adult person at rest is - (i) $9-12$ (ii) $15-18$ (iii) 21-24 (iv) 30-33 (d) During exhalation, the ribs - (i) move outwards (ii) move downwards (iii) move upwards (iv) do not move at all

Ans. (a) (iii) spiracles (b) (ii) lactic acid (c) (ii) 15-18 (d) (ii) move downwards 6. Match the items in Column-I with those in Column-II.

Column I Column II

Ans.

Column I

Column II

• Mark ' T ' if the statement is true and ' F ' if it is false: (i) During heavy exercise, the breathing rate of a person slows down. (T/F) (ii) Plants carry out photosynthesis only during the day and respiration only at night. (T/F) (iii) Frogs breathe through their skins as well as their lungs. (T/F) (iv) The fishes have lungs for respiration. (T/F) (v) The size of the chest cavity increases during inhalation. (T/F) Ans. (i) False (ii) False (iii) True (iv) False (v) True
• Given below is a square of letters in which different words are hidden related to respiration in organisms. These words may be present in any direction - upwards, downwards or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.

(i) The air tubes of insects (ii) Skeletal structures surrounding chest cavity (iii) Muscular floor of chest cavity (iv) Tiny pores on the surface of leaf (v) Small openings on the sides of the body of an insect (vi) The respiratory organs of human beings (vii) The openings through which we inhale (viii) An anaerobic organism (ix) An organism with tracheal system

Ans. (i) Trachea (ii) Ribs (iii) Diaphragm (iv) Stomata (v) Spiracles (vi) Lungs (vii) Nostrils (viii) Yeast (ix) Ant 9. The mountaineers carry oxygen with them because: (a) At an altitude of more than 5 km there is no air. (b) The amount of air available to a person is less than that available on the ground. (c) The temperature of air is higher than that on the ground. (d) The pressure of air is higher than that on the ground.

Ans. (b) The amount of air available to a person is less than that available on the ground.

4.0Benefits of NCERT Solutions For Class 7 Science Chapter 7

1. Clear Understanding of Concepts: The solutions explain important topics like how food, water, and nutrients are transported in animals and plants in an easy-to-understand way.
2. Improves Exam Preparation: By following the solutions, students can prepare well for exams as the content is based on the NCERT syllabus, making it relevant for school tests.
3. Step-by-Step Learning: The solutions provide detailed, step-by-step answers, helping students solve questions more effectively and improving their problem-solving skills.
4. Builds Strong Foundation: Learning these concepts helps build a strong base in science, which will be useful in higher classes.
5. Boosts Confidence: Regular practice with these solutions boosts students' confidence in handling questions about transportation in animals and plants.
6. Simplifies Tough Topics: Complex ideas like blood circulation and water transport in plants are simplified, making them easier for students to understand.

NCERT Solutions For Class 7 Science students perform better in exams and gain a solid grasp of the subject matter.