How does an amoeba obtain its food class 9

Carry out the following osmosis experiment: Take four peeled potato halves and hollow each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now, (a)keep cup A empty (b)put one teaspoon sugar in cup B (c)put one teaspoon salt in cup C (d)put one teaspoon sugar in boiled potato cup D. Keep this setup for two hours. Then observe the four potato cups and answer the following : (i)Explain why water gathers in the hollowed portion of B and C? (ii)Why is potato A necessary for this experiment? (iii) Explain why water does not gather in the hollowed out portions of A and D. a) Water gathers in the hollowed portion of potato B and C because theplasma membrane of potato cup act as semipermeable membrane and the concentration gradient causes the water to move from the cell to the hllowed portion by the process of osmosis. (b)Potato cup A is necessary as it acts as a control. This shows that osmosis occurs only when there is concentration gradient and a living semi permeable membrane. (c)(i) In the potato cup A, there is no concentration gradiesnt for osmosis to occur. (ii) In the potato cup D, the semi permeability of potato membrane is lost due to boiling. So, no water movement occurs.

In Amoeba, a cell membrane invagination (pseudopodia) surround the food particle. This is followed by formation of food vacuole surrounding the food by joining of pseudopodia of both sides and engulfment of food vacuole in animal body. Also known as phagosomes, these food vesicles serve as site of food digestion.

7. How Does an Amoeba/ Obtain Its Food?8. What is Osmosis? Exercise Chapter 5 the Fundamental Unit of Life Science 7. How does an Amoeba/ obtain its food?8. What is osmosis? Chapter 5: the Fundamental Unit of Life Science Class 9 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. 7. How does an Amoeba obtain its food?8. What is osmosis? is solved by our expert teachers. You can get ncert solutions and notes for class 9 chapter 5 absolutely free. NCERT Solutions for class 9 Science Chapter 5: the Fundamental Unit of Life is very essencial for getting good marks in CBSE Board examinations 7. How does an Amoeba obtain its food? Answer: Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole as shown in figure. Inside the food vacuole, complex substances are broken down into simpler ones which then diffuse into the cytoplasm. The remaining undigested material is moved to the surface of the cell and thrown out. 8. What is osmosis? Answer: Osmosis is the process in which water molecules moves from the region of high concentration to a region of low concentration through a semi permeable membrane.

Popular Questions of Class 9 Science • Q:- Abdul, while driving to school, computes the average speed for his trip to be 20 km h -1. On his return trip along the same route, there is less traffic and the average speed is 40 km h -1. What is the average speed for Abdul’s trip? • Q:- An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down. • Q:- A driver of a car travelling at 52 km h -1applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h -1in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied? • Q:- Fig 8.11 shows the distance-time graph of three objects A,B and C. Study the graph and answer the following questions: Fig. 8.11 (a) Which of the three is travelling the fastest? (b) Are all three ever at the same point on the road? (c) How far has C travelled when B passes A? (d) How far has B travelled by the time it passes C? • Q:- Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why? • Q:- Two objects, each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 m s -1before the collision during...

How an Amoeba Obtains its Food Amoebas are unicellular organisms that belong to the kingdom Protista. They are heterotrophs, which means they cannot produce their own food and rely on external sources for their nutrition. Here's a detailed explanation of how an amoeba obtains its food. Engulfment of Food Particles Amoebas feed on a variety of organisms, including bacteria, algae, and other protists. They use a process called phagocytosis to engulf their food. It involves the following steps: 1. The amoeba extends its pseudopodia (false feet) towards the food particle. 2. The pseudopodia surround the food particle and form a food vacuole. 3. The food vacuole is then pinched off from the cell membrane and brought into the cytoplasm of the amoeba. 4. The food particle is digested by the enzymes present in the food vacuole. Excretion of Waste Material After digestion, the waste material is excreted out of the cell through a process called egestion. The undigested food particles are expelled out of the cell by exocytosis. Nutrient Absorption The nutrients released from the food particles during digestion are absorbed by the amoeba through the cell membrane. The cell membrane of the amoeba is permeable to small molecules like glucose, amino acids, and fatty acids. These molecules diffuse into the cytoplasm of the cell and are used for various metabolic processes. Conclusion In summary, amoebas obtain their food through phagocytosis, digest it in the food vacuole, and absorb the ...

How does an Amoeba obtain its food? Answer: An amoeba catches its food by changing its shape and using pseudopodia to capture food. • It has a flexible cell membrane that can create finger-like extensions called pseudopodia . • The amoeba starts by extending its pseudopodia and surrounding the food particle. • The amoeba takes in the food particle and creates a food vacuole inside which the food is digested with the help of enzymes . • After digestion , any waste or undigested products move to the surface of the cell and are thrown out of the cell body.

7. How Does an Amoeba/ Obtain Its Food?8. What is Osmosis? Exercise Chapter 5 the Fundamental Unit of Life Science 7. How does an Amoeba/ obtain its food?8. What is osmosis? Chapter 5: the Fundamental Unit of Life Science Class 9 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. 7. How does an Amoeba obtain its food?8. What is osmosis? is solved by our expert teachers. You can get ncert solutions and notes for class 9 chapter 5 absolutely free. NCERT Solutions for class 9 Science Chapter 5: the Fundamental Unit of Life is very essencial for getting good marks in CBSE Board examinations 7. How does an Amoeba obtain its food? Answer: Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole as shown in figure. Inside the food vacuole, complex substances are broken down into simpler ones which then diffuse into the cytoplasm. The remaining undigested material is moved to the surface of the cell and thrown out. 8. What is osmosis? Answer: Osmosis is the process in which water molecules moves from the region of high concentration to a region of low concentration through a semi permeable membrane.

Popular Questions of Class 9 Science • Q:- Abdul, while driving to school, computes the average speed for his trip to be 20 km h -1. On his return trip along the same route, there is less traffic and the average speed is 40 km h -1. What is the average speed for Abdul’s trip? • Q:- An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down. • Q:- A driver of a car travelling at 52 km h -1applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h -1in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied? • Q:- Fig 8.11 shows the distance-time graph of three objects A,B and C. Study the graph and answer the following questions: Fig. 8.11 (a) Which of the three is travelling the fastest? (b) Are all three ever at the same point on the road? (c) How far has C travelled when B passes A? (d) How far has B travelled by the time it passes C? • Q:- Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why? • Q:- Two objects, each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 m s -1before the collision during...

How does an Amoeba obtain its food? Answer: An amoeba catches its food by changing its shape and using pseudopodia to capture food. • It has a flexible cell membrane that can create finger-like extensions called pseudopodia . • The amoeba starts by extending its pseudopodia and surrounding the food particle. • The amoeba takes in the food particle and creates a food vacuole inside which the food is digested with the help of enzymes . • After digestion , any waste or undigested products move to the surface of the cell and are thrown out of the cell body.

In Amoeba, a cell membrane invagination (pseudopodia) surround the food particle. This is followed by formation of food vacuole surrounding the food by joining of pseudopodia of both sides and engulfment of food vacuole in animal body. Also known as phagosomes, these food vesicles serve as site of food digestion.