CBSE > Class 07 > Science | CBSE Board | Homework Help

Some organisms live together and share shelter and nutrients with each other . This is called symbiotic relation.For eg : 1) certain fungi lives in the root of trees and the trees provide them shelter and food and the fungus help them to take up minerals , nutrients and water from the soil. This association is very important for both trees and fungus

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Ruvanthika Jayakumar 7 years, 5 months ago

Some organisms live together and share food shelter with each other. Eg algae and fungi

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Toshit Kawte 7 years, 5 months ago

It mean some animal live together and share Food

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ANSWER

Describe the processof neutralisation

Posted by Laxmipriya Boitei 7 years, 5 months ago

CBSE > Class 07 > Science

3 answers

Tanisha Sachdeva 7 years, 5 months ago

When we dip litmus paper into base and acid it changes it's color into red or blue accordingly but when we dip it into a neutral substance it does not changes it's close . This known as neutralisation.For more information read the NCERT book of 7th class CH - 5 ( acids and basis )

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Satyam Upadhyay 7 years, 5 months ago

The reaction between acid and bases is known as netralisation

2Thank You

Tejas Mahale 7 years, 5 months ago

The reaction betwen acid and bace

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ANSWER

Which is the largest gland in our body

Posted by Mahi Sandhu 7 years, 5 months ago

CBSE > Class 07 > Science

3 answers

Ruvanthika Jayakumar 7 years, 5 months ago

Reddish gland which i.e liver .

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Pritesh Kumar Sahoo 7 years, 5 months ago

Liver

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Kashish Kukreja 7 years, 5 months ago

Liver

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ANSWER

How the baby came?

Posted by Kiran Rani 7 years, 5 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

What is conduction and sorry

Posted by Sooraj Sonu 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Ruvanthika Jayakumar 7 years, 5 months ago

The heat passes one end to another end Sorry is a golden word

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ANSWER

What is fabric?☺️☺️☺️

Posted by Eshani Maurya 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Ruvanthika Jayakumar 7 years, 5 months ago

In short fabric is cloth

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Harshita Verma 7 years, 5 months ago

Fabric is cloth or other material produced by weaving together cotton, nylon, wool, silk or other threads.Fabrics are used for making things like clothes, sheets, curtains.

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ANSWER

Cream coloured digestive gland

Posted by Arish Khan 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Ruvanthika Jayakumar 7 years, 5 months ago

Pancreas which produce pancreatic juice

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Pritesh Kumar Sahoo 7 years, 5 months ago

Pancreas

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ANSWER

what is stamota

Posted by Susant Kumar 7 years, 5 months ago

CBSE > Class 07 > Science

3 answers

Ruvanthika Jayakumar 7 years, 5 months ago

Small opening in leaves use for transpiration & respiration

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Rudra Sharma 7 years, 5 months ago

It's not stamoto it is stomata it is the porse present on leafe surface

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Yogita Ingle 7 years, 5 months ago

There are small openings on the lower surface of the leaves. These pores are called stomata. These openings are surrounded with guard cells. Stomata helps in the transpiration of water, i.e., the loss of excess water from the plant. Stomata help in exchange of gases.

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ANSWER

Difference between radiant heat and radiation

Posted by Priscilla Lal 4 years, 7 months ago

CBSE > Class 07 > Science

1 answers

Sia ? 4 years, 7 months ago

Radiant heat, also known as thermal radiation, is the transfer of electromagnetic radiation which describes the heat exchange of energy by photons. Radiant heat is a mechanism for heat transfer which does not require a medium in which it propagates (unlike convection and conduction).

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ANSWER

Enzymes present in the saliva break down starch into _

Posted by Hita Kashyap 7 years, 5 months ago

CBSE > Class 07 > Science

6 answers

Bhagat Ram Shabdani 7 years, 5 months ago

Sugar

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Ay K 7 years, 5 months ago

Sugar ☺☺

1Thank You

Nishant Singh 7 years, 5 months ago

Sugar

1Thank You

Tushar Varshney 7 years, 5 months ago

Sugar

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Aryan Yadav Aryan 7 years, 5 months ago

Sugar

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Radhika Dhamija 7 years, 5 months ago

Sugar

1Thank You

ANSWER

Write one simlarity and one difference between the nutrition in amoeba

Posted by Prince Kumar 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Nutrition in Amoeba as well as in humans is of holozoic type. In humans, there is a complex digestive system consisting of digestive organs and digestive glands whereas in amoeba the digestion takes place in a single cell.

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ANSWER

Definition ofassimilation

Posted by Batish Bawa 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Harshita Verma 7 years, 5 months ago

The absorption and digestion of food or nutrients by the body or any biological system.

2Thank You

Fazan Rangrage 7 years, 5 months ago

The absorbed subtance are used to build complex subtance such as the protien required by the body . This is called assimilation

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ANSWER

Write one similarity amoeba and human beings

Posted by Bishnu Mangaraj 7 years, 5 months ago

CBSE > Class 07 > Science

4 answers

Bhagat Ram Shabdani 7 years, 5 months ago

Both have digestive system

1Thank You

Atharva Yadav 7 years, 5 months ago

Both have digestive system

2Thank You

Fazan Rangrage 7 years, 5 months ago

Nutrition in both amobea and human being is holozoic which consists all the steps like ingestion, digestion absorption ,assimilation and egestion

1Thank You

Mohankrishna Nayak 7 years, 5 months ago

The similarity between amoeba and humans is
-Both are animals

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ANSWER

What os villi

Posted by Harsh Kumar 7 years, 5 months ago

CBSE > Class 07 > Science

4 answers

Nishant Singh 7 years, 5 months ago

Small finger like projection increases surface area for absorption of blood or food

2Thank You

Sonali Aggarwal 7 years, 5 months ago

A minute projection arising from a mucous membrane

One of the numerous vascular projections of the small intestine
One of the fingerlike projections of the chorion that contribute to the formation of the placenta in mammals.

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Harsh Patel 7 years, 5 months ago

Villi are tiny finger like outgrowths in the inner wall of small intestine they increase surface area for absorption of food

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Harsh Kumar 7 years, 5 months ago

What is villi

3Thank You

ANSWER

Define the step of nutrition in humans

Posted by Hita Kashyap 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Prathamesh Tambe 7 years, 5 months ago

The step in nutrition starts from the mouth to ****. It is a long alimentary canal which consist of mouth,oesophagus,stomach,small intestine,large intestine,rectum and **** . When food is passed through mouth it enters stomach through oesophagus. The stomach secretes gastric juices and a strong acid ,called hydrochloric acid,which help in digestion. Then it is passed to small intestine,which is the main organ of digestive tract,here all nutrients are absorbed. Then it is passed to large intestine,were excess water is absorbed and the remaining solid waste is passed to rectum. Rectum stores the solid waste in the form of faeces. The faeces are expelled through ****

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ANSWER

What ion is responsible for opening and closing of stomata

Posted by Padmapritha Kala 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Krrish Kumar 7 years, 5 months ago

Gaurd cells are responsible for opening and closing of stomata

1Thank You

ANSWER

Define amino acids ?

Posted by Hita Kashyap 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Ayush Kumar 7 years, 5 months ago

This is a substance wich we get after breaking down of protien into simpler substance

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Padmapritha Kala 7 years, 5 months ago

Amino acid are the end product of protein when digested with enzymes

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ANSWER

Full from of the o2 and Co2

Posted by Harshil M Sapariya 7 years, 5 months ago

CBSE > Class 07 > Science

4 answers

Krrish Kumar 7 years, 5 months ago

O2 means oxygen Co2 means carbon dioxide

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Suma Kompalli 7 years, 5 months ago

O2 means oxygen and CO2 means carbon-dioxide

1Thank You

Bhagat Ram Shabdani 7 years, 5 months ago

O2 means oxygen and co2 means carbondie oxide

1Thank You

Konkana Bhattacharjee 5 years, 9 months ago

O 2 Means oxygen And CO 2 Means carbon dioxide

1Thank You

ANSWER

A spaceship travels 36.000 in an hour express it in km/sec in method

Posted by Harshil M Sapariya 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Ankit Pandey 7 years, 5 months ago

Firstly mention the unit of the number which you have asked

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ANSWER

Weathering of rock occur due to

Posted by Shama Gupta 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Ankit Pandey 7 years, 5 months ago

Water and air and etc which makes the small tiny particles called Mitti in Hindi

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ANSWER

But also cavity

Posted by Anshika Pal 5 years, 9 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

explain the structer of cells

Posted by Meghavi Vaghela 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Parts of the Cell: There are three main components of a cell – cell membrane, cytoplasm and nucleus. The parts of a cell include cell membrane, nucleus, mitochondria, chloroplasts, cell wall and vacuoles.

Cell membrane - Every cell is covered by a thin sheet of skin called cell membrane or plasma membrane. The cytoplasm and nucleus are enclosed within the cell membrane. It is also called plasma membrane. The membrane separates cells from one another and also the cell from the surrounding medium. The cell membrane has tiny pores which allow the movement of substances into and out of the cell.
Cell wall – The plant cells have a thick cell wall around them outside the cell membrane. It gives shape and support to the plant cells. It also provides protection to plant cells against variations in temperature, high wind speed, etc.
Cytoplasm - The jelly-like substance between the nucleus and the cell membrane is called cytoplasm. The various structures present in the cytoplasm of the cell are called organelles. The most prominent organelle in the cytoplasm of the cell is nucleus.
Nucleus – Nucleus is a large spherical organelle present in the centre of the cell that controls all its activities. It is the largest organelle of the cell that can be stained with a dye and can be seen with the help of a microscope. Nucleus is separated from the cytoplasm by a membrane called the nuclear membrane. It contains thread like structures called chromosomes. The function of chromosomes is to transfer the characteristics from parents to the offsprings through genes. The nucleus and the cytoplasm together constitute protoplasm. Nucleus contains a small spherical body in it called nucleolus.
Vacuole – The blank-looking structures in the cytoplasm are called vacuoles. Large vacuoles are commonly found in plant cells. Animal cells have either no vacuole or small vacuoles.
Plastids – Plastids are small coloured bodies scattered in the cytoplasm of plant cells. They are of different colours. Chloroplasts are green coloured plastids that contain green pigment called chlorophyll which helps in photosynthesis.
Mitochondria – Mitochondria are tiny rod-shaped or spherical-shaped organelles which provide energy for all the activities of the cell. It is also called the powerhouse of the cell.

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ANSWER

Definition of assimilation

Posted by Anirudh Singh 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Suma Kompalli 7 years, 5 months ago

The process of taking in and fully understanding information or ideas Or The absorption and digestion of food and nutrients by the body or biological system

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ANSWER

Define 1 autotrophic nutrition 2 saprotrophic nutrition 3 insectivorus plant 4 indicator 5 acid and base

Posted by Fazan Rangrage 7 years, 5 months ago

CBSE > Class 07 > Science

3 answers

Anirudh Singh 7 years, 5 months ago

Plants that consume small animals and plants is known as insectivorous plant

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Anirudh Singh 7 years, 5 months ago

Saprotrophic nutrtion is when plant obtain nutrients from dead and decaying matter and they do not contain clorophyll is known as saprotrophic nutrition.

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Anirudh Singh 7 years, 5 months ago

Autrophic nutrition is when plants make there own is called autotrophic nutrition.

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ANSWER

What is parasitic plant

Posted by Bhagat Ram Shabdani 7 years, 5 months ago

CBSE > Class 07 > Science