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

BRYOPHYTA Their body is differentiated in steam and leaf like structure There is no tissue present for conducting water and other substances from one part to another part in plant Bryophyta are also known as plant amphibians PTERIDOPHYTA Their body is differentiated in steam and leaf There is conducting tissue for water and other substances in plant

2Thank You

ANSWER

What is the story of sun and moon why sun come only morning and moon at only at night

Posted by Shital Thakur 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Arpit Jain 7 years, 3 months ago

Because it is rotating means when there is sun in india then in australia is night. The sun and moon have to take part of rhe whole world Thankyou

2Thank You

Shafaq Ansari 7 years, 3 months ago

Bcoz of earth rotation... Maybr

0Thank You

Ravinder Godara 7 years, 3 months ago

Don't know

1Thank You

ANSWER

Mention one method by which living organism influence the formation of soil

Posted by Aditya Prakash 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Aanchal Jaiswal 7 years, 3 months ago

Humus

0Thank You

ANSWER

1. Name the three layers of cells in plathelmenthies

Posted by Kabir Sood 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Vedant Pillai 7 years, 3 months ago

the 3 germ layers are:- 1. Ectoderm 2.Mesoderm 3.Endoderm

0Thank You

Avishek Vishwakarma 5 years, 11 months ago

Endoderm

1Thank You

Avishek Vishwakarma 7 years, 3 months ago

Encoders, ectoderm and mesoderm are three layers present in platyhelmenthies

2Thank You

ANSWER

Why does the skin of our fingers shrink when we wash clothes for long time

Posted by Sheetal Thawani 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Md Shahzad 7 years, 3 months ago

Because of exosmosis

0Thank You

Kabir Sood 7 years, 3 months ago

When we wash clothes, our hands are exposed to water for a long time. Our hands behave as hypertonic solution and the outside of our hands behave as hypotonic solution. Hence, water flows from high concentration to low concentration. The water is not entering your hands, it actually leaves them and hence, they shrink

3Thank You

Avishek Vishwakarma 7 years, 3 months ago

While washing or clothes there were many detergent were used. For that the solution of detergent and water have higher concentration while in our finger there were low concentration. So our fingers shrink.

1Thank You

ANSWER

Work is which quantity

Posted by Anshika Evney 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Himanshu Aditya 7 years, 3 months ago

Scalar quantity

3Thank You

ANSWER

Name the material which shows the following properties : (a) Average properties of constituents contained in it. (b) Has a fixed ratio of the components . (c) Cannot be converted into simpler form by ordinary physical methods.

Posted by Lalit Kumar 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Princy Tyagi 7 years, 3 months ago

Element

0Thank You

ANSWER

What is all the process and topics in short explain diversity in living organism

Posted by Tushar Jaiswal 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What are differences between coelentarate and annelids

Posted by Dharambir Singh 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Saloni Kumar 7 years, 3 months ago

Annelida phylum has following features : Bilateral symmetry True body cavity so allow true organs to be packed Organ level of organisation Triploblastic May be unicellular or multicellular Organisms have setae or parapodia for locomotion Segmented Examples earthworm leech nereis Whereas cnidaria phylum has following features : Most organisms have radical symmetry Tissue level of organisation Gastravascular cavity Form of two layers, one layers form inner cells n second layer form outer cells They have slender tentacles which helps in capturing the prey Cnidoblats injects the toxin in the body of prey Divided into polyps and medusae Examples hydra obelia sea anemone

0Thank You

ANSWER

What're isotopes and isobars ???¿???????????????

Posted by Amidhi Jain 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Ved Jaw 7 years, 3 months ago

Isotopes are atoms of same element having same atomic number but different mass number.Eg-carbon-12 and carbon-14 Isobars are atoms of different elements having same mass number but different atomic number.Eg-Potassium and Calcium

1Thank You

ANSWER

Define relative molecular mass and relative atomic mass

Posted by Abhishek Dawer 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

How to calculate the value of g in gravitation

Posted by Vinit Badaliya 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Define Thermodynamics.

Posted by Tushar Kanti 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Avishek Vishwakarma 7 years, 3 months ago

It is the relationship between hate and other forms of energy.

1Thank You

ANSWER

Give an example to prove law of constant proportions

Posted by Parampreet Kaur 7 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Abhishek Dawer 7 years, 3 months ago

Water contain 2 hydrogen 1oxygen

0Thank You

Tushar Kanti 7 years, 3 months ago

100 g of Water contains 11g hydrogen and 89g oxygen ie they are present in definite ratio ie 1:8

4Thank You

ANSWER

What is manifestation?

Posted by Faiyyan Alam 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Who Discovered in atom

Posted by Simpy Sharma 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Abhishek Dawer 7 years, 3 months ago

Maharishi kanad

0Thank You

Bhuvan @143 7 years, 3 months ago

J J Thamson

0Thank You

Vedant Pillai 7 years, 3 months ago

john dalton discovered atom for the first time.

1Thank You

ANSWER

How atomic mass and relative atomic mass are related

Posted by Ishant Garg 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is different between piciculture and agwaculture

Posted by Aanchal Jaiswal 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Gaurav Seth 7 years, 3 months ago

Pisciculture

The principal form of aquaculture is known as Pisciculture. This is the method of fish farming in which fishes are raised in artificial way for breeding and transportation. Usually large tanks are used to raise the fish on commercial basis and this process is called Pisciculture.

Aquaculture

Aquaculture simply means fish farming and in broader sense, it is farming of aquatic organism like fish and plants for breeding and rearing. Aquaculture is done on commercial basis both for cultivation of fresh and salty water organisms. It is done in controlled condition to make the environment idea for survival and growth of aquatic animals.

1Thank You

Gaurav Seth 7 years, 3 months ago

AQUACULTURE

PISCICULTURE

1. It involves production of all types

of aquatic organisms in water bodies.

Production of fishes is called pisciculture.

2. There is small quantity of special feed from outside.

Here fish feed is provided from outside.

1Thank You

Gaurav Seth 7 years, 3 months ago

AQUACULTURE	PISCICULTURE
1. It involves production of all types of aquatic organisms in water bodies.	Production of fishes is called pisciculture.
2. There is small quantity of special feed from outside.	Here fish feed is provided from outside.

1Thank You

ANSWER

Who discovered the the hierarchy of taxonomic categories

Posted by Nitish Badaliya 7 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Riya Panchal 7 years, 3 months ago

Actually some other scientist named........ (don't know) had developed it.... and then after some research linnaeus had renovated it in order to make easy to remember the names of the diff species and organisms. Henceforth he is named as the father of taxonomies!!!!!!!!!!!!! THIS IS DAMN FACT!!

2Thank You

Gaurav Seth 7 years, 3 months ago

A Swedish naturalist named Carolus Linnaeus is considered the 'Father of Taxonomy' because, in the 1700s, he developed a way to name and organize species that we still use today. His two most important contributions to taxonomy were:

A hierarchical classification system
The system of binomial nomenclature (a 2-part naming method)

0Thank You

ANSWER

Who discovered the kingdom of

Posted by Nitish Badaliya 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Rajwinder Singh 7 years, 3 months ago

If yoy say five kingdoms So it was descovered by Robert whittcer

1Thank You

Riya Panchal 7 years, 3 months ago

Kingdom of what!??

0Thank You

Shafaq Ansari 7 years, 3 months ago

Which kingdom??

0Thank You

ANSWER

whst is mole

Posted by Disha Bhardwaj 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Kaustubh Mishra 7 years, 3 months ago

Mole is a link between the mass of atoms or molecules and the no. of the atoms. A group of 6.022*10*23 particles of a substance is called a mole of that substance. 1mole of atoms =6.022*10*23atoms 1mole of molecules=6.022*10*23molecules?

2Thank You

ANSWER

Is there any way to learn the periodic table faster

Posted by Riya Kumari 7 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Kaustubh Mishra 7 years, 3 months ago

Of course u can memorise it by a scentence and build ur own to for memorising more elements in periodic table. In this scentence i will show 1st 10elements of periodic table . (H)appy (He)nry (Li)kes (Be)ans (B)rownies and (C)hocolate (N)uts (O)ver (F)riday,s (Ne)ws. H= hydrogen He=helium Li=lithium Be=berylium B=boron C=carbon N=nitrogen O=oxygen F=fluroine Ne=neon?

3Thank You

Priyanka Neupaney 7 years, 3 months ago

You can learn the periodic table song if u can learn my music faster..it helped me ..it can help you too

1Thank You

ANSWER

A body starts from rest and attain a velocity of 12m/s in 30 sec. If final velocity becomes 8m/s what is it's de acceleration?

Posted by Ananya Mehta 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Vedant Pillai 7 years, 3 months ago

the question is wrong. the last line must be- If the final velocity is 8 m/s, what be the deceleration in 5s? Answer- In case 1, u=0m/s v=12m/s t=30s a=v-u/t =12-0/30 =12/30 =2/5 =0.4 m/s^2 In case 2, u=12m/s v=8m/s t=5s a=v-u/t =8-12/5 =-4/5 =-0.8m/s^2

1Thank You

ANSWER

A body starts from rest and attain a velocity of 12m/s in 30 sec. If final velocity becomes 8m/s what is it's de a celebration?

Posted by Ananya Mehta 7 years, 3 months ago

CBSE > Class 09 > Science