Humans cannot digest cellulose because they lack the enzymes essential for breaking the beta-acetyl linkages. The undigested cellulose acts as fibre that aids in the functioning of the intestinal tract. And also the cellulose is very hard

1Thank You

Nitya Gahrotra 5 years, 1 month ago

0Thank You

Ratnakala Salin 5 years, 1 month ago

Humans did not have specialised organs to digest cellulose.

1Thank You

Yogita Ingle 5 years, 1 month ago

1Thank You

ANSWER

How does food moves in the opposite direction during vomiting

Posted by Sabu Kuriakose 5 years, 1 month ago

CBSE > Class 07 > Science

3 answers

Kashish ☺️✌️ 5 years, 1 month ago

The intense pressure formed in the stomach when the food is not accepted by the stomach. The content in the stomach is then pushed back. This returned content is expelled out from the mouth in the form of vomiting.

0Thank You

Mayra Singh 5 years, 1 month ago

your answer;The intense pressure formed in the stomach when the undigestable food is not accepted by the stomach. The content in the stomach is then pushed back. This returned content is expelled out from the mouth in the form of vomiting.

0Thank You

Yogita Ingle 5 years, 1 month ago

1Thank You

ANSWER

........... Revolves around the nucleus in a circular orbit

Posted by Fatema Aliakbar 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Hindu ?? 5 years, 1 month ago

Electron

0Thank You

Yogita Ingle 5 years, 1 month ago

In an atom an electron revolves around the nucleus in a circular orbit .

0Thank You

ANSWER

An atom is elictrically............. As it has equal number of protons and electrons

Posted by Fatema Aliakbar 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 5 years, 1 month ago

An atom is electrically............. As it has an equal number of protons and electrons.

neutral

0Thank You

ANSWER

What is capillaries ?

Posted by Preet Preet 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Maulik Cheend 5 years, 1 month ago

They are thin blood vessels which connect arteries and viens ....

2Thank You

Yogita Ingle 5 years, 1 month ago

Capillaries are the extremely thin blood vessels which connect arteries to veins. Every cell of the body is near a capillary.

2Thank You

ANSWER

any body play ark or free fire or minicraft or dead by dalight

Posted by Rudra Chetariya 5 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

Why do you think that thr heart is enclosed with in a double-walled sac???

Posted by Sneha Prasad 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

Pericardium

The heart is enclosed by a sac-like covering called as pericardium. It has 2 layers. The outer layer is more fibrous and is called as a parietal layer.
The inner layer is smooth and is called as a visceral layer. Pericardium protects the heart from mechanical injury and helps in the movement of the heart walls.

0Thank You

ANSWER

What is the significance of transportation system in animals????

Posted by Sneha Prasad 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

A n s w e r
The main function of the transport system is to allow for the move nutrients, oxygen, carbon dioxide, hormones, antibodies, urea and heat within the blood plasma throughout the body.

2Thank You

ANSWER

Sketch the reproductive parts of a flower

Posted by Piyush Sharma 5 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

Q.2 Correct the following statements by replacing the highlighted word. 5 ) The overfilled bicycle tube bursts because the pressure inside it becomes less than the atmospheric pressure outside.

Posted by Naga Vardhan 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Hanah T Alex 5 years, 1 month ago

No that's absolutely wrong??

3Thank You

ANSWER

Describe the various ways by which seeds are dispersed.

Posted by Puneet Verma 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Hanah T Alex 5 years, 1 month ago

Seeds are dispersed through air water and animal

1Thank You

Gaurav Seth 5 years, 1 month ago

Seed dispersal is aided by the wind, water and animals. Sees also dispersed when fruits burst with sudden jerks.

By wind: Seeds and fruits of plants are carried away by the wind, water and animals. Winged seeds such as those of drumstick and maple, light seeds of grasses or hairy seeds of aak (Madar) and hairy fruit of the sunflower, get blown off with the wind to faraway places.

By water: Seeds of aquatic plants or plants near water bodies usually develop floating ability in the form of a spongy or fibrous outer coat as in coconut and get dispersed by water.

By animals: Spiny seeds with hooks which get attached to the bodies of animals and are carried to distant places.

Dispersion of seeds by bursting of fruits: Some seeds are dispersed when the fruits burst with sudden jerks. The seeds are scattered far from the parent plant. This happens in the case of castor and balsam.

1Thank You

ANSWER

Sketch the reproductive parts of flowers.

Posted by Puneet Verma 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

Sketch the reproductive parts of a flower.

Solution:

Question6. Explain the difference between self-pollination and cross-pollination.

Solution:

Self-pollination	Cross-pollination
In self-pollination, pollen grains are transferred from the anther to the stigma of the same flower.	In cross-pollination, pollen grains are transferred from the anther of one flower to the stigma of another flower of the same kind.

1Thank You

ANSWER

Explain what you understand by sexual reproduction.

Posted by Puneet Verma 5 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

Describe the different methods of asexual reproduction.give example.

Posted by Puneet Verma 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

Solution:

Different methods of asexual production are:

Vegetative propagation: It is a type of asexual reproduction in which new plants are produced from

roots, stems, leaves and buds. Since reproduction is through the vegetative parts of the plant.

Budding: In this process, a new individual from a bulb-like projection, bud, grows and gets detached from the parent to form a new individual and it is mostly observed in yeast.

Spore formation: Spores are asexual reproductive bodies. A spore is covered by a hard protective coat to withstand unfavourable conditions such as high temperature & ow humidity. So they can survive for a long time. Under favourable conditions, a spore germinates and develops into a new

individual. Fungi on bread and plants such as moss and ferns reproduce through spores.

Fragmentation: In this process, a new organism is developed from the fragments of the parent body. Example, An alga breaks up into two or more fragments. These fragments or pieces grow into new individuals

0Thank You

ANSWER

Q.2 Correct the following statements by replacing the highlighted word. 5 ) The overfilled bicycle tube bursts because the pressure inside it becomes less than the atmospheric pressure outside.

Posted by Naga Vardhan 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Fatema Aliakbar 5 years, 1 month ago

Hdfnhg

0Thank You

ANSWER

Find out about a cyclone or hurricane that has struck any part of India in last five years. Write a report on your findings. Including the following details. • Name of cyclone • Place where it struck • Date when it struck • Devastation caused • pictures

Posted by As Patil 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Naga Vardhan 5 years, 1 month ago

Edit Extremely Severe Cyclonic Storm Fani (/ˈfɒniː/)[a] was the strongest tropical cyclone to strike the Indian state of Odisha since the 1999 Odisha cyclone. The second named storm and the first fudge cyclonic storm of the 2019 North Indian Ocean cyclone season, Fani originated from a tropical depression that formed west of Sumatra in the Indian Ocean on 26 April. Vertical wind shear at first hindered the storm's development, but conditions became more favorable for Fani on 30 April. Fani rapidly intensified into an extremely severe cyclonic storm and reached its peak intensity on 2 May with 1-minute sustained winds equivalent to a high-end Category 4 major hurricane. Fani weakened before making its landfall, and its convective structure rapidly degraded thereafter, degenerating into a remnant low on 4 May, and dissipating on the next day. Extremely Severe Cyclonic Storm FaniExtremely severe cyclonic storm (IMD scale)Category 4 tropical cyclone (SSHWS) Cyclone Fani at peak intensity on 2 May, while approaching Odisha Formed26 April 2019Dissipated5 May 2019(Remnant low after 4 May)Highest winds3-minute sustained: 215 km/h (130 mph) 1-minute sustained: 250 km/h (155 mph) Lowest pressure932 hPa (mbar); 27.52 inHgFatalities89 totalDamage$8.1 billion (2019 USD)Areas affectedOdisha, West Bengal, Andhra Pradesh, East India, Bangladesh, Bhutan, Sri LankaPart of the 2019 North Indian Ocean cyclone season Prior to Fani's landfall, authorities in India and Bangladesh moved at least a million people each from areas within Fani's projected path onto higher ground, and into cyclone shelters, which is thought to have reduced the resultant death toll and casualties.[3] Fani killed at least 89 people in eastern India and Bangladesh and caused about US$8.1 billion in damages in both India and Bangladesh, mostly in Odisha, in India.[4] Meteorological history Preparations Impact and aftermath See also Notes References External links Last edited 4 days ago by Janm 7 RELATED ARTICLES 1990 North Indian Ocean cyclone season 1991 North Indian Ocean cyclone season 2019 North Indian Ocean cyclone season

1Thank You

ANSWER

Q.2 Correct the following statements by replacing the highlighted word. 4) The even heating of the earth surface is the main canse of wind movement

Posted by Naga Vardhan 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Naga Vardhan 5 years, 1 month ago

Please send the answer

0Thank You

Abhi Kumar 5 years, 1 month ago

Uyg

0Thank You

ANSWER

Q.2 Correct the following statements by replacing the highlighted word. 3)Cyclones are constructive because they can damage houses, telephones and other communication systems, agriculture, trees etc. Ans. ______________________________________________________________

Posted by Naga Vardhan 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

cyclones are destructive because they can damage houses coma telephones and other communication systems , agriculture trees etc

2Thank You

ANSWER

_ shawls are woven from under -fur of kashmiri goats

Posted by Karadiya Irfana 5 years, 1 month ago

CBSE > Class 07 > Science

3 answers

Nihal Mehta 5 years ago

Pashmina shawls

0Thank You

B. Janani Sri 5 years, 1 month ago

Pashmina shawls

0Thank You

Sakshi Suman 5 years, 1 month ago

Pashmina shawls

1Thank You

ANSWER

Too much of acid in the stomach causes

Posted by Karadiya Irfana 5 years, 1 month ago

CBSE > Class 07 > Science

4 answers

B. Janani Sri 5 years, 1 month ago

Acidity

0Thank You

Chandrika Borah 5 years, 1 month ago

Acidity

0Thank You

Gaurav Seth 5 years, 1 month ago

Acidity:

Acidity is also referred to as acid reflux. It is a common medical condition caused due to excessive production of acid by the stomach, which flows back into the food pipe and causes pain or burning sensation in the lower chest area.

0Thank You

Karadiya Irfana 5 years, 1 month ago

Acidity

1Thank You

ANSWER

What is the meaning of dialysis . Tell me in short

Posted by Deepakkumar Sethi 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Naga Vardhan 5 years, 1 month ago

Dialysis: The process of removing waste products and excess fluid from the body. Dialysis is necessary when the kidneys are not able to adequately filter the blood. Dialysis allows patients with kidney failure a chance to live productive lives. There are two types of dialysis: hemodialysis and peritoneal dialysis.Each type of dialysis has advantages and disadvantages. Patients can usually choose the type of long term dialysis that best matches their needs.

0Thank You

Gaurav Seth 5 years, 1 month ago

Dialysis is an artificial process of getting rid of waste and unwanted water from the blood by dialysis machines. Dialysis machines contain a tank with solution of water glucose and salt. Patient's blood allowed passing through solution for removal of waste. The cleaned blood pumped to vein.

0Thank You

ANSWER

What is meaning of plasma

Posted by Deepakkumar Sethi 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Gaurav Seth 5 years, 1 month ago

Plasma is the medium of the blood, in which different types of blood cells exists. Red blood cells, white blood cells and other components of blood are suspended in plasma.
Plasma is the liquid part of the blood. It contains the clotting agent fibrinogen, which prevents the excessive flow of blood during injury. It also contains proteins which help in the transportation of glucose and other nutrients to different parts of the body.

0Thank You

Yogita Ingle 5 years, 1 month ago

Plasma is the fourth state of matter. Many places teach that there are three states of matter; solid, liquid and gas, but there are actually four. The fourth is plasma. To put it very simply, a plasma is an ionized gas, a gas into which sufficient energy is provided to free electrons from atoms or molecules and to allow both species, ions and electrons, to coexist. The funny thing about that is, that as far as we know, plasmas are the most common state of matter in the universe. They are even common here on earth. A plasma is a gas that has been energized to the point that some of the electrons break free from, but travel with, their nucleus. Gases can become plasmas in several ways, but all include pumping the gas with energy. A spark in a gas will create a plasma. A hot gas passing through a big spark will turn the gas stream into a plasma that can be useful. Plasma torches like that are used in industry to cut metals. The biggest chunk of plasma you will see is that dear friend to all of us, the sun. The sun's enormous heat rips electrons off the hydrogen and helium molecules that make up the sun. Essentially, the sun, like most stars, is a great big ball of plasma.

0Thank You

ANSWER

Posted by Naga Vardhan 5 years, 1 month ago

CBSE > Class 07 > Science

3 answers

Kanav Nigam 5 years, 1 month ago

the pressure of the wind decreases if the speed of the air is decreased

1Thank You

Naga Vardhan 5 years, 1 month ago

2 answer

1Thank You

Pariksha Sindhu 5 years, 1 month ago

1) cold air is heavier than hot air

0Thank You

ANSWER

A curtain is hanging at the entrance of a room. A long corridor runs at right angles to the door that is parallel to the curtain. If a strong wind blows along the corridor, the curtain will :- (a) get pushed inside the room. (b) get pushed outside the room. (c) get collected towards one end/swirled. (d) remain unaffected.

Posted by Ayush Parida 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Basheera Fatima 5 years, 1 month ago

(b) get pushed outside the room As we know that high-speed winds have low pressure due to the scattering of particles it possesses and as the one side of the curtain has low pressure and the other side has high pressure, so the winds will flow from high-pressure area to low pressure area in order to maintain balance , we know that already and hence curtain will get pushed in the direction of high-pressure wind.

0Thank You

Gaurav Seth 5 years, 1 month ago

(b) get pushed outside the room

As we know that high-speed winds have low pressure due to the scattering of particles it possesses and as the one side of the curtain has low pressure and the other side has high pressure, so the winds will flow from high-pressure area to low pressure area in order to maintain balance , we know that already and hence curtain will get pushed in the direction of high-pressure wind.

0Thank You

ANSWER

What is moment of earth

Posted by Thala Kavi Brothers&Sister 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Basheera Fatima 5 years, 1 month ago

If we think of the earth as a solid sphere rotating about its center, the moment of inertia is given by: I=25MR2.

0Thank You

Sapna Thapa 5 years, 1 month ago

If we think of the earth as a solid sphere rotating about its center, the moment of inertia is given by: I=25MR2.

1Thank You

ANSWER

What do you mean by soil profile

Posted by Shagun Thakur 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Basheera Fatima 5 years, 1 month ago

Different layers of soil are called soil horizons and the cross sectional arrangement of these layers in soil is called soil profile. Each layers of soil have different texture and color, different depth and varying chemical composition. Layers of soil can be seen while digging a well or when the foundation of a building is laid. Humus is the rotting dead matter present in the soil which makes the soil fertile. Plants absorb their nutrients from the humus in the soil. The different layers of soil are- A- horizon- * This is the topmost horizon and also called as topsoil. * Contains large amount of humus and minerals. * Topsoil is soft and porous. * Capacity of water retention of this soil is more. * Hold the roots of the plants entirely. * House of many living organisms such as worms, rodents, moles and beetles. 2) B-horizon- * Second layer of soil profile and also called as middle layer. * Contains larger amount of minerals than humus. * More compact and harder than topsoil. 3) C-horizon- * Third layer of soil profile. * Small lumps of rocks are found with cracks and cervices. 4) Bedrock- * The last layer of soil profile. * Very hard. * This layer is even difficult to dig with a spade .

2Thank You

Gaurav Seth 5 years, 1 month ago

Different layers of soil are called soil horizons and the cross sectional arrangement of these layers in soil is called soil profile.
Each layers of soil have different texture and color, different depth and varying chemical composition.
Layers of soil can be seen while digging a well or when the foundation of a building is laid.
Humus is the rotting dead matter present in the soil which makes the soil fertile.
Plants absorb their nutrients from the humus in the soil.