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

It is necessary to classify organisms because: Classification allows us to understand diversity better. It helps in the identification of living organisms as well as in understanding the diversity of living organisms. It is essential to understand the inter-relationships among the different groups of organisms.

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Firdouse Begum 3 years, 1 month ago

It is essential because we all are organisms and we should know that from which things we are made up of we can classify organisms as: The basic fundamental unit of life is cell from cell tissues were made with tissues organ with organ organisms

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ANSWER

Sir give any bio question

Posted by Arpita Singh 3 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Shubham Kumar 3 years, 1 month ago

What is dense and types of dense

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Tarun Singh 3 years, 1 month ago

Why mitochondria is known as powerhouse of the cell

1Thank You

Disha Tekwani 3 years, 1 month ago

What are simple permanent tissue

2Thank You

Aman Yadav 3 years, 1 month ago

What is photosynthesis?

1Thank You

ANSWER

What is potassium chloride ?

Posted by Zainab Chauhan 3 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Raksha P G 3 years, 1 month ago

Potassium chloride is also known as potassium salt.

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Abhishek Mishra 3 years, 1 month ago

KCl

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ANSWER

Chapter 9 question answer

Posted by Madhu Choudhary 3 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Madhu Choudhary 3 years, 1 month ago

Using a horizontal force of 200 N we intend to move a wooden cabinet across a floor at a constant velocity, what is the friction force that will be excited on the cabinet

2Thank You

ANSWER

What are the three formulas that are in ch 8 motion

Posted by Ilesh Yadav 3 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Harshit Sharma 3 years, 1 month ago

2as=v²-u²

2Thank You

Harshit Sharma 3 years, 1 month ago

v=u+at s=ut+1/2at²

1Thank You

Kartik Tyagi 3 years, 1 month ago

U^2-2as = v^2

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Suryansh Karakoti 3 years, 1 month ago

Ut +1/2a(t)2

1Thank You

Anshul Pal 3 years, 1 month ago

V=u+at

1Thank You

ANSWER

what is animal tissues explain

Posted by Nitya Pareek 3 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Saurabh Dhakar 3 years, 1 month ago

The cells in animals which come from the same origin, have similar structure and perform similar function.

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Pranjal Maan 3 years, 1 month ago

Animal tissues are those which found inside living bodies like organisms,humans, animals.

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ANSWER

Write a short note in Epidermic And it's function

Posted by Shubham Sai 3 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Madhulika S 3 years, 1 month ago

Epidermic cells are outer covering and help to protect a body from injury and infection. ( Hope this helps )

1Thank You

Shubham Sai 3 years, 2 months ago

Write a short note in Epidermic? Write it's function

2Thank You

ANSWER

What is buyoncy?

Posted by Vaishnavi Wakchaure 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Vaishnavi Wakchaure 2 years, 9 months ago

Hii lovi

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Akash Kumar 3 years, 1 month ago

Buyoncy is an upward pressure we can feel this in water

1Thank You

Lovepreet Lovepreet Kaur 3 years, 1 month ago

Upthrust is called buyoncy

1Thank You

Vidhi Basewar 3 years, 1 month ago

SI unit of momentum is Kgm/s

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Tarun Singh 3 years, 2 months ago

SI unit of momentum

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ANSWER

Why only earth have atmosphere?

Posted by V. Ridhanya Catherine 3 years, 2 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Explain about pure substance

Posted by Mp Devanandha 3 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Saurabh Dhakar 3 years, 1 month ago

Substance which made up of only same type of particles.

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Abhishek Mishra 3 years, 1 month ago

Generally pure substances are only two types- element compound.

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Akash Kumar 3 years, 1 month ago

Pure substance made up of only one kinds of atoms

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ANSWER

??? ??? ???? ??? ???? ????? ???

Posted by Neil :) 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Madhulika S 3 years, 1 month ago

Thank you.... :))

1Thank You

Pranjal Maan 3 years, 1 month ago

Thanks ??

1Thank You

Neil :) 3 years, 2 months ago

Bahut din hai exam?

2Thank You

Akshat Joshi 3 years, 2 months ago

Exam kab hai???!!!

2Thank You

Anjum Munir 3 years, 2 months ago

S2u

3Thank You

ANSWER

Can Anyone Suggest me the best way of knowing chapter Force and laws of motion class 9 Science

Posted by Virendra Patil 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Akshat Joshi 3 years, 2 months ago

Aree haa yrr mujhe bhi nahi aaya force and laws of motion

0Thank You

Pratik Kumar 3 years, 2 months ago

Watch on magnet brain youtube channel. Well explained topic of every subject.

1Thank You

Kartik Chandel 3 years, 2 months ago

Yes watch the videos of the CBSE guide

2Thank You

Moksha Shetty 3 years, 2 months ago

write the p/q form of 0.01

0Thank You

Divyanshu Mishra 3 years, 1 month ago

What is cell

9Thank You

ANSWER

Compare electrons neutrons and protons

Posted by Aditya Patel 3 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Asfaaq Musthaqi 3 years, 2 months ago

Hi de

0Thank You

ANSWER

All the best for your exams ??

Posted by Neil :) 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Anjum Munir 3 years, 2 months ago

S2u

1Thank You

Shantanu Sharma 3 years, 2 months ago

Same to u

2Thank You

Khemesh Bisen 3 years, 2 months ago

S2y

2Thank You

Sakshit Reddy 3 years, 2 months ago

2Thank You

Monica ✨☄️ 3 years, 2 months ago

You tooʕ　·ᴥ·ʔ

2Thank You

ANSWER

The Fundemantle unit of life?

Posted by Vinayak Rathee 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

🥺 🐼 3 years, 2 months ago

Cell.......,.

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Kartik Chandel 3 years, 2 months ago

Cell

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Trisha Verma 3 years, 2 months ago

Cell is the fundamental unit of life

2Thank You

Anuj Rana 3 years, 2 months ago

The fundamental unit of life called cell

1Thank You

Tanishka Chauhan Chauhan 3 years, 2 months ago

Cell

2Thank You

ANSWER

Explain Function of Parenchyma and Arenchyma.

Posted by Ranveer M 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Mintu Kumar 3 years, 2 months ago

Fvvyvvut6hb

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Vidhi Basewar 3 years, 2 months ago

Parenchyma is used to store the food

2Thank You

Lalita Tiwari 3 years, 2 months ago

Parenchyma is used to give support to the plants and store food

2Thank You

Dhivanshi Singla 3 years, 2 months ago

It helps in gaseous exchange

2Thank You

Pavan K 3 years, 2 months ago

Parenchyma provides support to plants and also stores food.

2Thank You

ANSWER

Perfumes are made up of

Posted by Ayan Reshi 3 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Saurabh Dhakar 3 years, 1 month ago

Liquid and Gas

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Mitesh Doshi 3 years, 2 months ago

Alcohol

0Thank You

ANSWER

If any thing travel above the speed of light what happens

Posted by Ayan Reshi 3 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Abhishek Mishra 3 years, 2 months ago

Time traveller

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Mitesh Doshi 3 years, 2 months ago

It will travel a time

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ANSWER

Explain the three laws of motion

Posted by Vaishnavi Wakchaure 3 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Tanishka Chauhan Chauhan 3 years, 2 months ago

1st Law of motion - If anything is in rest it becomes in rest and if anything is in motion it becomes in motion until external force is applied on it 2nd Law of motion - Force is directly proportional to rate of change of momentum 3rd Law of motion - For every action there is equal and opposite reaction

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Lalita Tiwari 3 years, 2 months ago

First law of motion is - if the stationary object in a rest it became in a rest and a object in a motion it is in a motion until the external force is not applied

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Akhil Kumar Singh 3 years, 2 months ago

4Thank You

ANSWER

1. An experimentally useful definition of an element was given by (a)J J Berzellius (b) Robert Boyle XC) Lavoisier 2 Which of the following element is not a metalloid? (a)B (c) Ge 3. Which of the following property does not describe a compound? (a)lt is composed of two or more elements (b)lt is a pure substance (c)It cannot be separated into constituents by physical means (d) Both (a) and (b) (4) Si (d)It is mixed in any proportion by mass 4. According to the definition of the pure substance, which of the following is substance? (a)lce (b) Mercury Which of the following is/are true (c) Iron about heterogeneous mixture? (i) An opaque suspension is a heterogeneous mixture (ii)Colloidal solutions are heterogeneous mixture (iii)A mixture of two miscible liquids is a heterogeneous mixture (a)Only (1) (b) Only (ii) (c) Only (iii) (d) Both (i) and (ii) 6. Out of the following- Clouds, smoke, cheese and fog, the odd one out (a) Clouds At 0 C the (a) Solid (b) Cheese physical state of water is (b) Liquid (c) Fog (c) Both (a) and (b) (d) Smoke 7. is 5. a pure (d) All of these (d) gas 8. 20 gm of solute is dissolved in 50 gm of the solvent. The solubility of the solute is (a) 4 gm (b) 40 gm, (c) 10 gm 9. Which of these options is not a function of Ribosomes? (1) It helps in the manufacture of protein molecules (ii) It helps in the manufacture of enzymes (iii) It helps in the manufacture of hormones (iv) It helps in the manufacture of starch molecules (a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) 20 gm (d) (iv) and (i)

Posted by Iop Goc 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Disha Tekwani 3 years, 1 month ago

Its too big write in short

0Thank You

Madhulika S 3 years, 1 month ago

1) (c)Lavoisier (Too lazy to read the rest)

1Thank You

Kushagra Kumar Mishra 3 years, 2 months ago

?? जिसे पढ़ना हो वह पढ़ें ??

1Thank You

Megha Yadav 3 years, 2 months ago

Mynochori

2Thank You

Neil :) 3 years, 2 months ago

Itna bada padhe kaun???

3Thank You

ANSWER

The speed – time graph of a car is given here. Using the data in the graph calculate the total distance covered by the car.

Posted by Harshita Sethi 3 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Harshit Thakur 3 years, 1 month ago

Tissue is a group of cell

0Thank You

Kushagra Kumar Mishra 3 years, 2 months ago

Search in

1Thank You

Vanshika Pari 3 years, 2 months ago

Define tissue

0Thank You

Vanshika Pari 3 years, 2 months ago

What is tissue

1Thank You

ANSWER

Who discover Nucleus. And in what year

Posted by Vishal Maddheshiya 3 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Akhil Kumar Singh 3 years, 2 months ago

Robert Brown in 1831

2Thank You

Pooja Taktode 3 years, 2 months ago

Robert brown in 1831

1Thank You

Vishal Maddheshiya 3 years, 2 months ago

Robert Brown ? in 1831

2Thank You

ANSWER

Give the names of the elements present in the following compounds ( a) Quick lime (b) hydrogen bromide (C) Baking powder (D) potassium sulphate

Posted by Arjun Ramsay 3 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Deepanjali Deepanjali 3 years, 1 month ago

(a) Quick lime : calcium ,oxygen (b) Hydrogen bromide : hydrogen, bromine (c) Baking powder : Sodium , Hydrogen , carbon , oxygen (d) potassium sulphate : potassium , Sulphur , oxygen

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ANSWER

weight of two bodies a and p 500 Newton and 250 Newton respectively if the mass of a is 5 kg then what is the mass of B

Posted by Shreyansh Prasad 3 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Niyati Singh 3 years, 2 months ago

You happened to visit an orphanage and are greatly distressed to see how small children are kept in it and not well treated. You dicided to write an article on running an orphanage and helping the orphans to grow naturally. Write this article based on your own ideas on the visit to orphans in about ( 100-150) words.

1Thank You

Niyati Singh 3 years, 2 months ago

T8899

2Thank You

ANSWER

Fgty7

Posted by Yash Pratap Singh 3 years, 2 months ago

CBSE > Class 09 > Science