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By soaking the gram, bean and pea seeds overnight, they swell up because of the phenomenon known as osmosis. ... So by soaking peas or beans which are hypersonic and water being the hypotonic solution, water moves into the bean seeds until both the compartments become isotonic

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What is the process by which amoeba eats it's food?

Posted by Arnav Sharma 3 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Kanak Tyagi 3 years, 3 months ago

Endocytosis

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Anmol Preet 3 years, 3 months ago

Amoeba envelops their food through endocytosis or phagocytosis, where the flexibility of the plasma membrane creates pseudopodia.

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What are the parts of nucleus?

Posted by Apoorva Dodamani 3 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Harshita Sarda 3 years, 3 months ago

Nuclear envelop Chromatic network Chromosomes Nucleolus Nucleoplasm

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Anmol Preet 3 years, 3 months ago

Anatomically the nucleus is made up of several components: nuclear envelope, nuclear lamina, nucleolus, chromosomes, nucleoplasm are some of these components. All of these components work together in order for the nucleus to accomplish all of its functions.

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Explain the parts of nucleus

Posted by Apoorva Dodamani 3 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Anmol Preet 3 years, 3 months ago

The nucleus has very important roles to play. As it contains genetic material, it coordinates cell activities like protein synthesis and cell division. Anatomically the nucleus is made up of several components: nuclear envelope, nuclear lamina, nucleolus, chromosomes, nucleoplasm are some of these components.

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Explain the parts of nucleus.

Posted by Apoorva Dodamani 3 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Shazanul Haque Jafar 3 years, 3 months ago

Nuclelous-centre of nucleus ,brain of nucleis Chromosomes-it contains Dna which helps in inheritance. Nuclear envelopes -it surrounds the Nuclelous. Nuclear membranes -it acts as a membrane on nucleus

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An insect

Posted by Mohit Kumar 9F Roll No 24 3 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Vidyakar Kumar 3 years, 3 months ago

Cockroach, housefly, lizard, honeybee etc

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Prepare flash cards having details of physical quantity, symbolic representation, mathematical expression, SI unit (Distance, Displacement, Speed, Velocity, Acceleration)

Posted by Shivam Pravinbhai Ramani 3 years, 3 months ago

CBSE > Class 09 > Science

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Give three application of third law motion

Posted by Taran Ghuman 3 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Sia ? 3 years, 3 months ago

1)When a bullet is fired from the gun with a certain force (action) as a reaction an equal and opposite force is exerted on the gun.

2)when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air.

3)Engineers apply Newton's third law when designing rockets and other projectile devices.

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Prince Yadav 3 years, 3 months ago

Don't abuse

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Kamini hired a taxi and noted the initial reading of its odometer as 24803 km. After the journey, she noted the final reading of odometer as 25118 km. If the journey time was 4 hours 40 minutes, calculate the average speed of the taxi during the entire journey.

Posted by Vaishnavi Rathi 3 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 3 years, 3 months ago

Initial reading = 24803 km

Final reading = 25118 km

The speedometer reading at the start of the journey and at the end of the journey was noted by Kamini and the total time was also noted, the average speed is given by,

Total time = 4 hr and 40 min

{tex}Average \ speed = \frac {Total \ distance}{Total \ time}{/tex}

Total distance = Final reading – Initial reading

Total distance = 25118 – 24803

Total distance = 315 km

Total time = 4 hr 40 min

{tex}Total\ time = 4hr + (\frac {40}{60}) hr{/tex}

Total time = 4.67 hr

{tex}Average \ speed = \frac {315}{4.67}{/tex}

Average speed = 67.45 km/hr

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wet clothes do not dry easily on a rainy days. give reason

Posted by Punit Chauhan 3 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Sia ? 3 years, 3 months ago

Wet Clothes do not dry easily on a rainy day because the air has a lot of water vapour on it and it cannot accommodate the water vapour created by the wet clothes so the water remains in the clothes for a longer time.
The rate of evaporation depends on the temperature weather and humidity. The rate of evaporation is faster in sunny days when temperature is hot and humidity is less.
On the rainy day the temperature and weather is not hot hence the rate of evaporation is slow and wet clothes take longer time to dry up.

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Om Dwived 3 years, 3 months ago

Because the rainy clouds blocks th sun rays that's why the wet cloths do not dry easily

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Anmol Preet 3 years, 3 months ago

In a rainy day, the humidity level in the atmosphere is already high. As a result, it will be quite difficult for the moisture associated with wet clothes to change into vapours. Therefore, they will remain wet.

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a frog hops along a straight line

Posted by Sonu Verma 3 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 3 years, 3 months ago

Please ask question with complete information.

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Defference between unicellular and multicellular organism

Posted by Raghul R 3 years, 3 months ago

CBSE > Class 09 > Science

4 answers

Prince Yadav 3 years, 3 months ago

Defference in number of cell.

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Prathyush P 3 years, 3 months ago

Unicellular are made-up of only one cell where as multicellular are made-up of more than one cell

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Aadi Sharma 3 years, 3 months ago

Unicellelur represent on single cell

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Prakash Yadav 3 years, 3 months ago

Unicellular are made-up of only one cell where as multicellular are made-up of more than one cell

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A car travels at 54 km/h for first 20 s, 36 km/h for next 30 s and finally 18 km/h for next 10 s. Find its average speed.

Posted by Genita Irin 3 years, 3 months ago

CBSE > Class 09 > Science

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A gas can exert pressure on the walls of the container. Assign reason

Posted by Pallavi Sahu 3 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Pallavi Sahu 3 years, 3 months ago

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Pallavi Sahu 3 years, 3 months ago

The particles of a gas are free to move randomly in all direction. During the motion they collide with each other and other also with the walls of container

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Ramesh goes from his residence to a market 2.5 km away. Finding the market closed, he returns back to his residence. What is the distance covered by Ramesh? What is his displacement?

Posted by Vaishnavi Rathi 3 years, 4 months ago

CBSE > Class 09 > Science