CBSE > Class 09 > Science | CBSE Board | Homework Help

Cilia and flagella are tube-like appendages which allow for motion in eukaryotic cells. If a cell has a single appendage, which often looks tail-like, it is called a flagellum, but if it has many, they are called cilia. The motion of the cilia or flagellum moves the liquid outside the cell and if the cell is not anchored, it can "swim." A commonly recognized example is the "tail" on a sperm cell, which is actually a flagellum.

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Kishan Vb 7 years, 5 months ago

Projections inside the intestine is called cilia

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Jasnica Mahima 7 years, 5 months ago

Extra formation around the body

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Difference between QUEEN ;DRONE and WORKER??

Posted by Mini Aggarwal 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

Drone - They are the unfertilized eggs produced by queen.They have bigger eyes. They don't contribute in feeding the community.
Worker - They are fertilized eggs produced by queen and it perform all the works like repairing of bee hive etc.
Queen - They are mainly to produce eggs in large amount.She secrets a hormone called pheromone which keeps other females as sterile in the bee hive.

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What is the relation between capital G and small g¿¿??

Posted by Hemangi Jadhav 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.
G = 6.67300 × 10^-11 N.m².kg^-2. G is a constant throughout space and time.
g = 9.8 m.s^-2. g is a variable quantity.
G is a scalar quantity whereas g is a vector qualtity.

(According to Newton's law of universal gravitation the force of attraction between two bodies is given by F = GMm/r², where the symbols stand for their usual well known meanings. Also the weight of a body of mass m is F = mg.
So mg = GMm/r²,
or g = GM/r²
g is a constant at a given location, which depends upon M and r.)

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What is in the centre of our galaxy???????

Posted by Yash Sharma 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Utkarsh Raj 7 years, 5 months ago

Which galaxy you are talking about There many galaxy in universe

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Gautam Murria 7 years, 5 months ago

The galaxy's nucleus (marked) is home to a central, supermassive black hole called Sagittarius A-star.

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Difference between BINOMIAL NOMENCLATURE and TRINOMIAL NOMENCLATURE???

Posted by Mini Aggarwal 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Shirish Patel 7 years, 5 months ago

Spelling

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ANSWER

Naphthalene balls disappear with time without leaving any solid

Posted by Simranjeet Kaur 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Ashvini Vasave 7 years, 5 months ago

Naphthalene balls sublime (change into gas) quickly without leave any solid

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Varinder Kaur 7 years, 5 months ago

Naphthalene balls are sublime substances the substances which convert directly from solid to gas by absorbing the heat from surrounding after few minutes and vice versa of it from gas to solids by absorbing the heat from surrounding without leaving any solid substance after few minutes does naphthalene balls disappear with time without leaving any solid substance

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Palak ?? 7 years, 5 months ago

Due to sublimation as naphthalene balls sublimes at room temperature

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A element X which valency is 3. Write the chemical formula of its oxide

Posted by Devendra Bhakar 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Sanskar Chaudhary 7 years, 5 months ago

X²O³

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Ridhiman Sabharwal 7 years, 5 months ago

X2O3

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Roshan Patel 7 years, 5 months ago

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A element X which valency is 3. Name the element

Posted by Devendra Bhakar 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Sanskar Chaudhary 7 years, 5 months ago

Aluminium (Al)

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Sahil Bhattad 7 years, 5 months ago

There are many elements whose valency can be 3.. But the most common ones are aluminium (al^3+) , promethium etc

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ANSWER

Name the two types of mixture

Posted by Pranita Halkare 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Jasnica Mahima 7 years, 5 months ago

Homogeneous and homogeneous mixtures

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Yogita Ingle 7 years, 5 months ago

A mixture is a combination of two or more substances (elements or compounds) which is not done chemically.
Mixtures are two types Homogeneous Mixtures and Heterogeneous mixtures.
Homogeneous Mixtures: A Homogeneous mixture has a uniform composition of its components throughout its mass. It does not have visible boundaries of separation between the various components. For example a sugar solution or a salt solution.
Heterogeneous Mixtures: A Heterogeneous mixtures does not have a uniform composition throughout its mass also it has visible boundaries of separation between various components. For example mixture of sand and water.

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What is difference between an atom of hydrogen and a molecule of hydrogen

Posted by Sapna Kumari 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

A hydrogen atom has only one atom of hydrogen and may not have independent existance but a Hydrogen molecule has two atoms of Hydrogen which has stable existance. Similarly all unstable atoms and elements have more than one atom.

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How humidity and wind speed affect rate of evaporation

Posted by Yashraj Dawira 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Ankit Kumar 7 years, 5 months ago

welcome

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Ankit Kumar 7 years, 5 months ago

and wind : when wind speed increases , rate evaporation also increases.

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Ankit Kumar 7 years, 5 months ago

Humidity:when the humidity of air is low ,evaporation rate is increased.more humidity , less evaporation

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ANSWER

Difference between gravitation and gravitatinal constant g

Posted by Zain Imam 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 7 years, 5 months ago

Gravitation Constant (G)	Gravitational acceleration (g)
Its value is 6.67×10^-11Nm²/kg².	Its value is 9.8 m/s².
It is a scalar quantity.	It is a vector quantity.
Its value remains constant always and everywhere.	Its value varies at various places.
Its unit is Nm²/kg².	Its unit is m/s².

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Devendra Bhakar 7 years, 5 months ago

Gravitation is not fixed it changes from place to place. Like on the equator the gravitation force is 0 while on the poles it is high. Gravitational constant g is fixed.

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state difference between gravity and gravitation.

Posted by Rahul Kumar 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

Gravitation	Gravity
It can be an attraction force or repulsive force	It is always an attraction force
It is an universal force	It is not an universal force
It is a weak force	It is a strong force
The force is <nobr>F=(GM₁M₂)/R²</nobr> (G= gravitational constant)	The force is F=mg (g=acceleration due to gravity)
The direction of gravitational force lies in the radial direction from the masses	The direction of force of gravity is along the line joining the earth’s center and the center of the body. Its direction is towards the center of the earth.
Gravitation force is a vector quantity	Gravity is a vector field
The force can be 0 when separation between bodies is infinity	The force of gravity can be 0 at the center of the earth
It requires two masses	It requires only one mass

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What will happen if our sun suddenly blasts????????

Posted by Yash Sharma 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Yash Sharma 7 years, 5 months ago

NICE ANSWERS....??? Bro....its not a bomb but it is a star.......and star can also blast or explode..... HAVE SOME COMMON SENSE....????

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Palak ?? 7 years, 5 months ago

Then you will not be alive to see what happens next....??

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Miss Angel Barsha 7 years, 5 months ago

Our sun is not bomb, that it will blast ???

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ANSWER

Explain thyroid gland

Posted by Aarti Kumari 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Jay Bauri 7 years, 5 months ago

It is a endocrine gland present in the neck which secrets hormone that's regulate growth and development of the body it forms Adams apple on the name...???

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Rahul Kumar 7 years, 5 months ago

ovary generation may possible in girls sperm be produced in testis of ***** of boys

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Rahul Kumar 7 years, 5 months ago

gland which increase the size of sexual organ

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ANSWER

What it's matter

Posted by Raj Bahadur 5 years, 11 months ago

CBSE > Class 09 > Science

7 answers

Palak ?? 7 years, 5 months ago

Anything which occupies space,has mass and can be felt by any of our senses is called matter

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Tamanna Verma 7 years, 5 months ago

Anything which occupy space and have mass is known as matter.

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Miss Angel Barsha 7 years, 5 months ago

Anything that has mass and occupies space is known as matter

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Vani Chandra 7 years, 5 months ago

anything that occupies space and also have a mass it is called matter. for example.... tree, books, etc.

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Monika Yadav Monika Yadav 7 years, 5 months ago

I dont no

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Lathisha Padayachi 7 years, 5 months ago

Anything that occupies space as well as volume & have mass is known as matter

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Jaishree Sanodiya 7 years, 5 months ago

Anything that occupies space (volume) and have Mass is called matter

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ANSWER

A 100-w heater is used for 1hour every day for 30 days. Find the cost of electricity if the rate is Rs 3.00/unit

Posted by Rudra Singh 5 years, 11 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is 1 cm =

Posted by Devansh Agrawal 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Lathisha Padayachi 7 years, 5 months ago

1cm = 10 mm

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Devansh Agrawal 7 years, 5 months ago

10 mm

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Define thrust and pressure

Posted by Sanaya 7 years, 5 months ago

CBSE > Class 09 > Science

4 answers

Tamanna Verma 7 years, 5 months ago

The force acting perpendicular to the surface of the object is called thrust. S.I. unit of thrust is Newton. Force per unit area is called pressure. S.I. unit of pressure is Pascal

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Vani Chandra 7 years, 5 months ago

thrust - trust is a type of force which is exerted by a a body perpendicularly. Thrust is a force therefore the SI unit of thrust is Newton. pressure - pressure is defined as a thrust per unit area the SI unit of pressure is Newton per metre square or Pascal . pressure = thrust /area. ....

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Devansh Agrawal 7 years, 5 months ago

Pressure is defined as thrust per unit area

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Anamika Kumari 7 years, 5 months ago

See lesson gavitional

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Is plants are parasytic . why they depend on water so why are they called parasytic????

Posted by Milan Rawat 7 years, 5 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What do you mean by panchantatva

Posted by Shivam Gupta 7 years, 5 months ago

CBSE > Class 09 > Science

4 answers

Abc Xyz 7 years, 5 months ago

Acording to hindu mythology their are 5 elements which are air water earth fire n sky

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Aryan Tomar 7 years, 5 months ago

Panchatva means five elements are air,water,sky,earth,fire.It is write in rigveda.

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Kanya .S 7 years, 5 months ago

Five elements

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Yogita Ingle 7 years, 5 months ago

Panchtatva means air , earth , fire, sky and water .

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Mushroom is a type of fungi and have cells and are living.so, why we say mushrooms are veg instead of non-veg???????????????

Posted by Yash Sharma 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Srishti Singh 7 years, 5 months ago

Search on Google clear answer is given there

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ANSWER

Higher level of NCERT notes of chapter Diversity in Living Organism

Posted by Vivek Sahu 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Miss Angel Barsha 7 years, 5 months ago

It may also be given in www.studyrankers.com, www.aglasem.com and many other sites, not only in vedantu

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Yash Sharma 7 years, 5 months ago

Just go to google and type science notes of class 9th ch. Diversity in living organisms www.vedantu.com.......and donload the pdf by filling information......... I think it can help you???

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