Solution: Food is vital for the following purposes: i It is the source of energy for all the metabolic processes in our body. The fourteenth chapters talk about the various sources of energy such as conventional and non-conventional sources. Xylem conducts water and minerals obtained from the soil via roots to the rest of the plant. How are the lungs designed in human beings to maximize the area for exchange of gases? Q19: Plants have low energy needs as compared to animals. Collecting duct collects urine from many nephrons. And what are the essential conditions for autotrophic nutrition? Answer It is necessary to separate oxygenated and deoxygenated blood to maintain efficient supply of oxygen into the body.
Below are a few of the highlighting benefits of science notes from Dronstudy. Q7: Why is small intestine in herbivores longer than in carnivores? Therefore, the amount of current flowing through the electrical component is reduced by half. Answer Terrestrial organisms take up oxygen from the atmosphere whereas aquatic animals obtain oxygen from water. Light - Reflection and Refraction 11. The resistance of the element of an electric heater is very high. This chapter basically consists of short answer type questions on various topics such as why do plants give out carbon dioxide at night, etc. The fourth chapter is about the carbon and its compounds where we will learn about the properties of carbons and chemical substances containing carbon.
Remaining questions are of short answer type. They are good conductors of electricity. They carry the oxygen to tissues which are deficient in oxygen. Chapter 12 - Electricity There are eighteen questions in the chapter. All the resist ors are connected in series. Answer: The heating element of an electric heater is a resistor.
The release of energy in aerobic respiration is much more than anaerobic respiration. Answer Xylem Phloem Xylem tissue helps in the transport of water and minerals. Do you find science fascinating? In question number four and five, we have to differentiate between the given two topics. What are the methods used by plants to get rid of excretory products? Alveoli are the site of gaseous exchange. Answer: There are thr ee resistors of resistances 2 Ω , 3 Ω , and 6 Ω respectively.
However, a living organism can also have movements, which are not visible to the naked eye. Thus, when they are taken out of water they die because they cannot take in oxygen directly from the atmosphere. If you like class 10 and cbse class 10 material. In this acidic medium, enzyme pepsinogen is converted to pepsin, which is a protein-digesting enzyme. Its value is 3 × 10 8 ms -1. Answer Autotrophic nutrition takes place through the process of photosynthesis. Each component of a series circuit receives a small voltage for a large supply voltage.
Answer Aerobic respiration Anaerobic respiration It occurs in the presence of O 2. The deoxygenated blood from different parts of the body passes through vena cava to reach right atrium. The walls of the alveoli are one cell thick and it contains an extensive network of blood capillaries. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in a cytoplasm. Remaining questions are of short and long answer type. Name some organisms that use the anaerobic mode of respiration. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.
Here is the list of all the chapters of Class 10 Science Notes: Chapter Name Chapter Notes Revision Notes Chemical Reactions and Equations Acids, Bases and Salts Metals And Non-Metals Carbon and its Compounds Periodic Classification Of Element Life Process , Control and Coordination How Do Organism Reproduce? Carbon dioxide, water, chlorophyll pigment, and sunlight are the necessary conditions required for autotrophic nutrition. Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning. By solving these question students get confidence and they score high marks on the final exam. All green plants and some bacteria have this type of nutrition. In the last question, we have to differentiate between Mendeleev's Periodic Table and the Modern Periodic Table.
Since these cells are not in direct contact with surrounding environment so, simple diffusion cannot meet the oxygen requirement of all these cells. The enzymes present in it finally converts the proteins to amino acids, complex carbohydrates into glucose and finally fats into fatty acids and glycerol. When cut, the blood will not stop oozing out. Q9: What is the significance of emulsification of fats? What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances, and what is the current through it? Exchange of gases is absent. This can lead to deficiency of oxygen in the body cells. Solution: i Leaves provide large surface area for maximum light absorption.