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

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.

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Apoorv Prajapati 6 years, 8 months ago

Electric cell is a source of electricity

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What is a r iver

Posted by Pari Jain 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Dipanshu Singh 6 years, 8 months ago

A river is a hole that will fill water it is called river

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What is the difference between villi and intestines

Posted by Rasha Yagami 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Golu Gill 6 years, 8 months ago

Villi - they are present in organs . They are very small. Intestine - 1) they are big. They are organs

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Lemon water receipe

Posted by Arpit Kumar 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Meenal Khandelwal 6 years, 8 months ago

First let take a glass of water,mix one table spoon of sugar,now mix 6 or 7 teaspoon of lime juice mix it well now mix 1 teaspoon of salt and black salt,take 2 leaves of mint and mix it well for dressing.that's it.?

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Define saprotroph

Posted by Popatlal Mutha 6 years, 8 months ago

CBSE > Class 07 > Science

2 answers

Mukesh Ojha 6 years, 8 months ago

The organism which live on dead plants and animals and absorb their nutrition from them . This organisms are known as saprotroph

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Gurkirat Deol 6 years, 8 months ago

Organisms that take nutrition from dead and decaying matter is called saprotroph

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What are fibres and fabrics

Posted by Alakshit Pradhan 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Fibres are very thin, thread-like strands from which fabrics are made. Some of the examples of fibres are – cotton, wool, silk, flax, jute, nylon, polyester and polyacrylic.

The fabrics made by weaving and knitting are used for making various types of clothes, sweaters, shawls, socks, vests, etc.

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What are auto tropes

Posted by Arpit Shukla 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Gurkirat Deol 6 years, 8 months ago

Organisms that can make their own food are called autotrophs

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Why we are called autotrophs

Posted by Aarav Srivastava 6 years, 8 months ago

CBSE > Class 07 > Science

5 answers

Akanksha Tripathi 6 years, 8 months ago

Wrong question

1Thank You

Meenal Khandelwal 6 years, 8 months ago

We are hetrotrophs because we can't able to make food themselves

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Tarveen Matharou 6 years, 8 months ago

We are not autotrophs.... We are heterotrophs. .......your question is totally wrong

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Poonam Jindal 6 years, 8 months ago

The question is wrong

1Thank You

Rajeev Kumar Yadav 6 years, 8 months ago

Your question is wrong

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What is the mode of feeding in snail

Posted by Jyoti Jindal 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

김 현지? 6 years, 8 months ago

Scraping

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How does pitcher plant grow

Posted by Megha Singh 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 8 months ago

In a pitcher plant, the leaf is modified into a pitcher like structure. The pitcher is complete with a lid. The inside of pitcher is full of hair-like structures. The pitcher is used to trap insects which may fall in it.

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Define sericulture

Posted by Nishant Vishwakarma 6 years, 8 months ago

CBSE > Class 07 > Science

2 answers

Poonam Jindal 6 years, 8 months ago

The rearing of silkmoth to obtain silk is called seruculture.

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Ishu Raj 6 years, 8 months ago

The rearing of silkworms for obtaining silk is called sericulture

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Why do the leaves of a plant usually green

Posted by Jaanvee Shaik 6 years, 8 months ago

CBSE > Class 07 > Science

5 answers

Akanksha Tripathi 6 years, 8 months ago

The leaves of a plant usually in green colour because they have a green pigment called chlorophyll

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Rajeev Kumar Yadav 6 years, 8 months ago

Leaves have chlorophll

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Arpit Shukla 6 years, 8 months ago

Chlorophyll

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Megha Singh 6 years, 8 months ago

It is because of the chlorophyll in chloroplasts

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Sameer Ali 6 years, 8 months ago

Chlorophyll

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minral not required in plant

Posted by Monika Bhati 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Akanksha Tripathi 6 years, 8 months ago

No minerals are required to plant

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Equation of chorophyll

Posted by Amar Prasad Dash 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Amar Prasad Dash 6 years, 8 months ago

Carbon dioxide + water in the precence of sunlight and chorophyll Carbohydrates + oxygen

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What are villi ?What is their location and function?

Posted by Bhumi Nag 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 8 months ago

The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, are present numerous blood vessels which absorb the digested food and carry it to the blood stream. It is hence from the blood stream, the absorbed food is delivered to each and every cell of the body.

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What is ORS when it gives given to a person

Posted by Amit Bansal 6 years, 8 months ago

CBSE > Class 07 > Science

2 answers

Yogita Ingle 6 years, 8 months ago

ORS (oral rehydration salts) is a special combination of dry salts that is mixed with safe water. It can help replace the fluids lost due to diarrhoea.
When a child has three or more loose stools in a day, begin to give ORS. In addition, for 10–14 days, give children over 6 months of age 20 milligrams of zinc per day (tablet or syrup); give children under 6 months of age 10 milligrams per day (tablet or syrup).

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Pragya Vijra 6 years, 8 months ago

ORS is a solution of salt and sugar in water, it is given to the person who is been dehydrated

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Why does wale breath

Posted by Mahi Sharma 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Sanjib Hari 6 years, 8 months ago

Fish use their gills to take oxygen from the water that they live in. But people get the oxygen we need by breathing air, using our lungs. Whales and dolphins use their lungs to breathe air also. That's one reasons why they come to the surface of the ocean.

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Carbon dioxide is released during photosynthesis true/false

Posted by Deepika Dubey 6 years, 8 months ago

CBSE > Class 07 > Science

6 answers

Akanksha Tripathi 6 years, 8 months ago

False oxygen released during photosynthesis

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Poonam Jindal 6 years, 8 months ago

False

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Rajeev Kumar Yadav 6 years, 8 months ago

True

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Sanjib Hari 6 years, 8 months ago

False

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Maya Sharma 6 years, 8 months ago

False

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Deepika Dubey 6 years, 8 months ago

False

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Why our stomach grumbles when we feel hungry

Posted by Ipshitaa Mahajan 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Sanjib Hari 6 years, 8 months ago

When you eat, the walls contract to mix and squeeze the food through your intestines so it can be digested. This process is called peristalsis. Peristalsis is generally responsible for the rumbling sound you hear after eating. ... Hunger can also cause abdominal sounds.

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What is photosyntises

Posted by B.K. Yadav 6 years, 8 months ago

CBSE > Class 07 > Science

3 answers

Akanksha Tripathi 6 years, 8 months ago

The process of preparing food of plant by using sunlight carbon dioxide present in air water Minerals and chlorophyll present in leaf

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Yogita Ingle 6 years, 8 months ago

The process by which plants make their own food in the presence of sunlight, carbon-dioxide present in air, water, minerals and chlorophyll present in leaves is termed as photosynthesis.

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Divyansh Jain 6 years, 8 months ago

The process in which plants prepare their own food in the presence of sunlight, water, chlorophyll and carbon dioxide.

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What is insectivorous plants ¿???¿??¿??¿??¿

Posted by Shipra Hajela 6 years, 8 months ago

CBSE > Class 07 > Science

3 answers

Akanksha Tripathi 6 years, 8 months ago

Plant which eat insects are called insectivorous plant

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Yogita Ingle 6 years, 8 months ago

Some plants eat insects. Such plants are called insectivorous plants. They trap and digest the insects. Pitcher plant is the example of an insectivorous plant. In pitcher plant the leaf is modified to form a pitcher like structure. The bright colour of the pitcher makes it very attractive to insects. Inside the pitcher; there are several hair-like structures. These hairs direct the trapped insects downwards. When an insect sits on the pitcher of the plant, the lid closes and the insect gets trapped inside the pitcher. The insect is then digested by the enzymes secreted by the cells of the plants.

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Amit Kumar Pradhan 6 years, 8 months ago

These are the lower plants. When they not get food by photosynthesis they ate the insects

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Sources of heat

Posted by Ritesh Jamakhandi 6 years, 8 months ago

CBSE > Class 07 > Science

3 answers

Akanksha Tripathi 6 years, 8 months ago

Sunlight

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Megha Singh 6 years, 8 months ago

Sun and electronics

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Sankalp Singh 6 years, 8 months ago

Hdyyg

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What doyou understand by the term nutrition? Name the two main modes of nutrition

Posted by Subodh Kumar 6 years, 8 months ago

CBSE > Class 07 > Science

2 answers

Poonam Jindal 6 years, 8 months ago

The process of talking in food and its utilisation by organism is called nurtition. There are two types of nutrition-: autotrophic mode of nutrition and hetrotrophic mode of nut rition.

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Yogita Ingle 6 years, 8 months ago

Nutrition is the process by which an organism procures its nourishment, the supply of nutrients required by its body and cells to stay alive. Nutrition is of two types namely, autotrophic and heterotrophic mode of nutrition.
Plants exhibit autotrophic mode of nutrition. They prepare their own food by the process of photosynthesis.
Animals exhibit heterotrophic mode of nutrition. Heterotrophic mode of nutrition can be categorised into holozoic mode, parasitic mode and saprophytic modes of nutrition.
*Holozoic mode of nutrition is the process in which an organism takes in whole food. The food ingested undergoes digestion, absorption and assimilation. e.g. small organisms like amoeba large organisms like human beings.
*Parasitic mode of nutrition is the process in which organism derives its nourishment from host organisms either in liquid form or nutrient form. e.g. Taenia solium is the tape worm living in human intestine.
*Saprophytic mode of nutrition is the process in which organism derives its nourishment from dead and decaying matter. e.g. Fungi are heterotrophs that acquire their nutrients from dead and decaying matter by absorption.

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Explain Fabe as well as digestion in animals

Posted by Gurvir Khushvir 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Dissolving of solid food is called digestion. During digestion, the food containing large insoluble substances is broken down into small, water soluble substances. Digestion involves both physical and chemical methods for digesting the large substances present in food.

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Photosynthesis define

Posted by Sarthak Chauhan 6 years, 8 months ago

CBSE > Class 07 > Science

2 answers

Akanksha Tripathi 6 years, 8 months ago

Process of making food of plant with the help of Sunlight carbon dioxide and chlorophyll is called photosynthesis

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Suhana Sharma 6 years, 8 months ago

The process through which plant make their own food with the help of sunlight, carbondioxide and water is called photosynthesis.

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Differentiate between Autotrophic and hetreotrophs

Posted by Aditya Dahiya 6 years, 8 months ago

CBSE > Class 07 > Science

1 answers

Amit Kumar Pradhan 6 years, 8 months ago

Autotropes- These are the organisms those who make thiet own food. Example- All green plants Heterotropes-These are the organisms those who dependent on others for their food.

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Defination of symbiotic

Posted by Aditya Dahiya 6 years, 8 months ago

CBSE > Class 07 > Science