Answer Anaerobic respiration occurs in the roots of some waterlogged plants, some parasitic worms, animal muscles, and some micro-organisms such as yeasts. Answer Life processes such as nutrition, respiration, transportation, excretion, etc. You will find plenty of them here or on the respective chapter page. Answer The amount of urine produced depends on the amount of excess water and dissolved wastes present in the body. Express this distance in km. A filter paper is one such filter that has very fine pores in it. Explain the process of making yarn from fibre.
It occurs in the presence of O 2. Periodic motion: The needle of a sewing machine moves up and down repeatedly with a certain time interval. Very Short Answer Type Questions Q1. In all cases, the first step is the break-down of glucose, a six-carbon molecule, into a three-carbon molecule called pyruvate. Difference between soaps and detergents. Answer: a Vibrating tuning fork b Earth in its orbit around the sun.
The breakdown of glucose by different pathways can be illustrated as follows. This pressure moves the material in the phloem to the tissues which have less pressure. Answer: a 100 b 5000 c Circular d Periodic Oscillatory e Periodic Oscillatory Q3. Answer: Sieving is a process by which fine particles are separated from the bigger particles by using sieve. The height of a person is 1. Download links are given just after online solutions of each chapter.
Thus, alveoli are the site for exchange of gases. At first, students get to know what is separation and then they are introduced to the different methods of separation which include handpicking, threshing, winnowing, sieving, and sedimentation, decantation and filtration, and evaporation. Give two examples each, of modes of transport used on land, water and air. Express it into cm and mm. After that, we pour the water into another container and the mixture will be separated. State whether the statements given below are true or false: i Stone is transparent, while glass is opaque. While measuring the length of a knitting needle, the reading of the scale at one end is 2.
Inherited and Acquired traits, Concepts of evolution — Species evolution, Changes in traits, determination of age of fossils. Fill in the blanks: a Plant fibres are obtained from ———— and —————. Answer: Sugar can be separated from wheat flour by sieving. These can be short or long answer type questions, multiple choice type questions or fill-in-the-blanks questions. Answer 2 No, it cannot be reversed, so it is an irreversible change.
Due to difference in the size of particles, sugar will stay on sieve and wheat flour will pass through it. Therefore, the area of this figure will be 5 square units. In other words, we tend to think of some sort of movement, either growth-related or not, as common evidence for being alive. Download links are given at the end of chapter. Wheat and sugar can be separated by sieving because they are in different sizes. Circular motion: The central part of the wheel of a bicycle is attached to a fixed point. .
Express this distance into km. The suspension of solid particles in liquid is allowed to stand for some time. This efficient system of oxygen supply is very useful in warm-blooded animals such as human beings. Name the other methods used to separate solid materials of different size. In yeast and human muscle cells, the breakdown of pyruvate occurs in the absence of oxygen whereas in mitochondria, the breakdown of pyruvate occurs in the presence of oxygen. It is also stored in the leaves that later fall off.
Pebbles and stones are removed from sand by sieving. Chapter 6 : Life Processes How do we tell the difference between what is alive and what is not alive? What do you mean by threshing? In this acidic medium, enzyme pepsinogen is converted to pepsin, which is a protein-digesting enzyme. Formation of simple ionic compounds like NaCl, Magnesium Chloride, etc. Structure i Nephrons are tubular structures present inside the kidneys. It is purified by decantation. She gets him to lay them out like a cross. This is known as double circulation.
Question 3: The autotrophic mode of nutrition requires a carbon dioxide and water. We have lots of study material written in easy language that is easy to follow. In this process, the stalks are beaten to free the grain seeds. This large surface area makes the gaseous exchange more efficient. Can this change be reversed? Now the blood becomes de-oxygenated. This pressure moves the material in the phloem to the tissues which have less pressure.