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

plants have well developed vascular system for transport of substances. the system consists of two types of vascular tissue they are xylem and phloem xylem-it transports water and minerals (sap) from the root to the leaf in upward direction phloem-transports prepared food from the leaf to all parts of the plant this is known as TRANSLOCATION

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What are difference between acid and base

Posted by Gamerking Clan Beast 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Tio Svhurr 6 years, 11 months ago

Acids turn blue litmus to red and vice versa

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Archana Singh 6 years, 11 months ago

Acid are the sour substances and base is the bitter substances

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What is full form of ISI

Posted by Sahish Koli 6 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Raghav Tyagi 6 years, 11 months ago

Indian Standard Institute

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Biplob Das 6 years, 11 months ago

Indian Standard Institute

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Sahish Koli 6 years, 11 months ago

Indian standerd institute

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A vertical section through different layers of the soil is called the _______

Posted by Ritika Singh 6 years, 11 months ago

CBSE > Class 07 > Science

4 answers

Dharmendra Kushwaha 6 years, 11 months ago

Soil profile

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Anushreya Bhowmick 6 years, 11 months ago

Horizons

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Archana Singh 6 years, 11 months ago

Soil profile

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Suchitra Sen 6 years, 11 months ago

Soil profile

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The roots of small plants embedded entirely in the ______

Posted by Ritika Singh 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Shrija Das 6 years, 11 months ago

Ground

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What type of mirror is used

Posted by Ashwin Tripathi 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Lionel Messi⚽⚽???? 6 years, 11 months ago

there are three types of mirror-concave mirror ,convex mirror,plane mirror

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Niraj Kumar 6 years, 11 months ago

Their are two type of mirror are use: convex mirror and concave mirror

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Bar graph

Posted by Soma Kunbu 5 years, 9 months ago

CBSE > Class 07 > Science

0 answers

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Explain the magnetic effect on electric current with help of activity

Posted by Swati Kotwal 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Sudha Gupta 6 years, 11 months ago

When electric current pass through a wire, it behaves like a magnet .this is the magnetic effect of the electric current ,in fact electric current can also used to make magnets

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Define of embryos

Posted by Tanuj Vikal 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Raghav Tyagi 6 years, 11 months ago

The developed zygote is known as embryo

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Archana Singh 6 years, 11 months ago

The zygote develops into an embryo

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What is resspiratiob?

Posted by Avni Singh Sona 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Sudha Kumari 6 years, 11 months ago

did you mean respiration?

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which chemical will be in cell (this cell is of which we put in tv remote or torch ok )

Posted by Vrushab Algond 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Dharmendra Kushwaha 6 years, 11 months ago

What did you mean?

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Functions of heart

Posted by Malathi Rao 6 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Yogita Ingle 6 years, 11 months ago

The heart is an organ which beats continuously to act as a pump for the transport of blood, which carries other substances with it. The human heart is divided into four chambers. The upper two chambers are called right and left atrium and the lower two chambers are called the right and left ventricles. Right atrium receives carbon dioxide-rich blood from the body. Blood from right atrium enters the right ventricle, which contracts and pumps the blood to the lungs. On the other hand, oxygen-rich blood from the lungs returns to the left atrium. From the left atrium, blood enters left ventricle. Left ventricle contracts and pumps the blood to all parts of the body. Hence, the rhythmic contraction and expansion of various chambers of the heart maintains the transport of oxygen to all parts of the body.

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Tanu Vicky Lucky Arya 6 years, 11 months ago

To pump the blood in all parts of body is called function of heart

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Vrushab Algond 6 years, 11 months ago

to pump the blood and send it to all parts

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What are the characterstics of portable water

Posted by Swati Koranne 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Swati Koranne 6 years, 11 months ago

Thanks

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Yogita Ingle 6 years, 11 months ago

The water which is fit for drinking by human beings is called potable water.
Characteristics:
(i) It is transparent.
(ii) It is odourless and colourless.
(iii) It is harmless or free from disease causing bacteria.

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Distinguish between xylem and pholem

Posted by J V Jayaaswin 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 11 months ago

Xylem	Phloem
Xylem tissues are tubular shaped structure, with the absence of cross walls. This tissue resembles the shape of a star.	Phloem tissues are elongated, tubular shaped structures that include thin sieve tubes with walls.
Xylem occupies the center of the vascular bundle.	Phloem is located on the outer side of the vascular bundle.
Xylem fibres are smaller.	Phloem fibres are larger.
They are present in leaves, stems, and roots.	They are present in leaves, roots, stems but transports and grow in fruits seeds and roots.

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What is sperm cells

Posted by Dîby@Jït D@S 4&4 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 11 months ago

A sperm cell is the male *** cell. All animals (and many other types of organisms) produce what are called *** cells. *** cells are the cells, that, when combined, produce a completely new organism.

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Through which process plants expel excess water.

Posted by Nikhil Bbagchandani 6 years, 11 months ago

CBSE > Class 07 > Science

4 answers

Rishav Shaw 6 years, 11 months ago

Transpiration

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Sanvi Shandilya 6 years, 11 months ago

Transportation

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Himani Gupta 6 years, 11 months ago

Transpiration

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Saanvi Tripathi 6 years, 11 months ago

Transportation i think.

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Are insects the only food item that snakes eat? What do they eat besides this?

Posted by Nikhil Bbagchandani 5 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Sudha Kumari 6 years, 11 months ago

Know the insects are not only food item that snakes eat they also eat small animal's egg and herbs

3Thank You

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What is oogenesis? Give brief description I it

Posted by Dîby@Jït D@S 4&4 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Nikhil Bbagchandani 6 years, 11 months ago

Oogenesis is the differentiation of ovum into a cell competent to further development.

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What is regular and irregular reflection of light .

Posted by Suchitra Sen 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Anish Sharma 6 years, 11 months ago

Regular reflection When a light passes through a smooth surface then it passes straightly through the object it is being reflected ,so it is called regular reflection. Irregular reflection When a light is passes through a rough surface then it passes here and there,so it is called irregular reflection.

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Difference between chemical change and physical change ?

Posted by Bhavika Jindal 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

J V Jayaaswin 6 years, 11 months ago

Sorry that is substance

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J V Jayaaswin 6 years, 11 months ago

In chemical change there is a new substance formed but in physical change new subsyance is not formed

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What is the second law of newton??

Posted by Yogita Rai 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Yogita Rai 6 years, 11 months ago

Thanks

1Thank You

Kashish Chalikwar 6 years, 11 months ago

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object

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What would happen to Earth if photosynthesis stops.

Posted by Saanchi Gupta 6 years, 11 months ago

CBSE > Class 07 > Science

4 answers

Rudrajit Chandra 6 years, 11 months ago

Food chain wiil disturbed and their would be crisis for oxygen.

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J V Jayaaswin 6 years, 11 months ago

Food chain will be affected

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J V Jayaaswin 6 years, 11 months ago

That is not appropriate answer

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Hermoine Granger 6 years, 11 months ago

If photosynthesis stops then the production of food will not occur and we will die

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What is the atomic number of hydrogen,helium,silver,cadium,ununtrium,sodium. ??

Posted by Anirudh Singh 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

J V Jayaaswin 6 years, 11 months ago

Hydrogen 1 helium 2 silver 47 sodium 23

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What is vescosity. ?

Posted by Anirudh Singh 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Sarthak Jha 6 years, 11 months ago

The vescosity of a liquid is the amount of resistance to gradual deformation due to Shear stress or tensile stress.

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What is plantation

Posted by Sourav Ekka 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 11 months ago

A plantation is the large-scale estate meant for farming that specializes in cash crops. The crops that are grown include cotton, coffee, tea, cocoa, sugar cane, sisal, oil seeds, oil palms, rubber trees, and fruits.

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What do you mean by monsoon

Posted by Fifa World Cups 6 years, 11 months ago

CBSE > Class 07 > Science