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Water is cell
Posted by Sami Faisal (Aug 21, 2017 7:30 p.m.) (Question ID: 15305)

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  • no
    Answered by Prateek Yadav (Aug 21, 2017 7:33 p.m.)
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How can we identify charges of elements
Posted by Sadhu Hiremath (Aug 21, 2017 7:26 p.m.) (Question ID: 15302)

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What is vagina
Posted by Sachin Kumar (Aug 21, 2017 6:35 p.m.) (Question ID: 15253)

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What is the meaning Of bulk?
Posted by Arya Gagan (Aug 21, 2017 6:27 p.m.) (Question ID: 15245)

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  • In great amount
    Answered by Yash Aggarwal (Aug 21, 2017 6:36 p.m.)
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Blue green algae have been included uncles the group monera and not under plantar Why?
Posted by Anirudh Jain (Aug 21, 2017 5:50 p.m.) (Question ID: 15219)

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How algae and fungi show symbiotic relationship?
Posted by Anirudh Jain (Aug 21, 2017 5:48 p.m.) (Question ID: 15217)

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  • As we know that,algae is autotrophic so it produces food by its own. Fungi provides shelter to algae and algae provides food to fungi. Like this they show symbiotic relationship.
    Answered by Pratishtha Agnihotri (Aug 21, 2017 6:32 p.m.)
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  • Algi and fungi live with the help of each other fungi takes components and Algi prepare food for both them
    Answered by Prashant Prashant (Aug 21, 2017 6:26 p.m.)
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How do amphibians inspire and reproduce
Posted by Anirudh Jain (Aug 21, 2017 5:47 p.m.) (Question ID: 15216)

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What is the chemical structure of lignin
Posted by Akshat Jindal (Aug 21, 2017 5:41 p.m.) (Question ID: 15210)

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  • Lignin is a class of complex organic polymers that form important structural materials in the support tissues of vascular plants and some algae.

    {tex}C_9H_{10}O_2,C_{10}H_{12}O_3,C_{11}H_{14}O_4{/tex}

    Answered by Naveen Sharma (Aug 21, 2017 6:12 p.m.)
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Name the phylum to which hydra and sea anemone belong
Posted by Anirudh Jain (Aug 21, 2017 5:05 p.m.) (Question ID: 15182)

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    Posted by Anirudh Jain (Aug 21, 2017 5:52 p.m.)
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  • Hydra belongs to Colentereta and sea anemone belongs to Cnidaria

    Answered by Himanshu Singhal (Aug 21, 2017 5:49 p.m.)
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Give one example of Indian and foreign poultry breed which when crossed produced and improve variety ? list any 1 desirable
Posted by Vhhv Hjhjg (Aug 21, 2017 4:58 p.m.) (Question ID: 15178)

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A bullet fired from a gun makes a small hole in the window pane while passing through it but the stone striking the window pane breaks it into pieces.why?
Posted by Joel Sajan (Aug 21, 2017 4:29 p.m.) (Question ID: 15159)

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  • It is because glass except the place where the bullrt strikes it,is unable to share the motion of the bullet due to its inertia of rest and remains intact and does not crack
    Answered by Megha Singla (Aug 21, 2017 4:38 p.m.)
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Diagram of plant cell
Posted by Aman Agrawal (Aug 21, 2017 4:16 p.m.) (Question ID: 15146)

  • Good
    Posted by Yash Aggarwal (Aug 21, 2017 6:39 p.m.)
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  • plant cell

    Answered by Archith Jayalal (Aug 21, 2017 5:32 p.m.)
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  • Answered by Minakshi Kapoor (Aug 21, 2017 5:32 p.m.)
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What is colloidal
Posted by Rishabh Jain (Aug 21, 2017 3:56 p.m.) (Question ID: 15138)

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  • A colloid is a solution which looks like homogenous but actually heterogeneous.
    Answered by Pratishtha Agnihotri (Aug 21, 2017 6:35 p.m.)
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  • colloid is a solution that has particles ranging between 1 and 1000 nanometers in diameter, yet are still able to remain evenly distributed throughout the solution.

    Answered by Arun Soni (Aug 21, 2017 4:22 p.m.)
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Define humidity
Posted by Naman Srivastava (Aug 21, 2017 3:20 p.m.) (Question ID: 15108)

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What are Sol?
Posted by Goldi Kumari (Aug 21, 2017 12:09 p.m.) (Question ID: 15044)

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  • sol is a colloidal suspension of very small solid particles in a continuous liquid medium. Sols are quite stable and show the Tyndall effect. Examples include blood, pigmented ink, cell fluids and paint. Artificial sols may be prepared by dispersion or condensation.

    Answered by Arun Soni (Aug 21, 2017 12:52 p.m.)
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What is inertia in simple way
Posted by Prakash Singh (Aug 21, 2017 10:12 a.m.) (Question ID: 15013)

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  • It is a property due to which it resist (remain unchanged) the change of its state of rest or motion is called inertia. Inertia depend on a mass .

    E.G.: When a tree is shaken. its fruits and leaves falls down because due to inertia fruits and leaves tend to remain at rest due to their inertia.

          When a bus suddenly stop then passenger fall forward. This is due to inertia passenger is moving with high speed as bus is moving. When bus suddenly stop then passenger remain to tend in a motion hence fall forward. 

    Answered by Shristi Keram (Aug 21, 2017 11:03 a.m.)
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  • The natural tendency of objects to resist a change in their state of rest or of uniform motion is called inertia. The mass of an object is a measure of its inertia. Higher the mass, the higher is the inertia. E.g. When an unbalanced force is applied by the engine to change the direction of motion of a vehicle, we tend to slip to one side of the seat due to the inertia of our body.

    Answered by Gurjeet Singh (Aug 21, 2017 10:34 a.m.)
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Is nitrogen a macro nutrient
Posted by Rutvik Ghorpade (Aug 21, 2017 8:36 a.m.) (Question ID: 15001)

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  • Those nutrients that are needed in large amounts are called macronutrients.

    There are three macronutrients required by human beings - carbohydrates (sugar), lipids (fats), and proteins. Each of these macronutrients provides energy in the form of calories.

    The soil supplies nitrogenphosphoruspotassium, calcium, magnesium, and sulphur In relatively large amounts to plants. These are the macronutrients for plants.

    In relatively small amounts, the soil supplies iron,manganese, boron, molybdenum, copper, zinc, chlorine, and cobalt, the so-called micronutrients.

    A plant uses these nutrients to support its growth, life cycle, and biological functions.

    Answered by Gurjeet Singh (Aug 21, 2017 10:42 a.m.)
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the type of cell is most likely to divide

Posted by Durai Durai (Aug 21, 2017 7:16 a.m.) (Question ID: 14979)

  • Meristem is a. type of cell which is most likely to divide
    Posted by Vedant Vedant (Aug 21, 2017 7:42 a.m.)
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  • Tissues that consist of cells with thin cellulose walls and continuously dividing cells are called meristematic tissues. Cells of meristematic tissues differentiate (i.e. lose the ability to divide and assume definite shape and size, and a specific function) to form permanent tissues.

    Answered by Gurjeet Singh (Aug 21, 2017 10:46 a.m.)
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What is the elements
Posted by Loki Reddy Loki (Aug 21, 2017 7:07 a.m.) (Question ID: 14976)

  • An element is a substance which can not be broken down into two or more simpler substances by any chemical and physical method. It contains only one kind of.atom
    Posted by Vedant Vedant (Aug 21, 2017 7:43 a.m.)
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  • Robert Boyle was the first scientist to use the term element in 1661.

    Antoine Laurent Lavoisier, a French chemist, was the first to establish an experimentally useful definition of an element. He defined an element as a basic form of matter that cannot be broken down into simpler substances by chemical reactions.

    Answered by Gurjeet Singh (Aug 21, 2017 11:08 a.m.)
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  • Robert Boyle was the first scientist to use the term element in 1661. Antoine Laurent Lavoisier, a French chemist, was the first to establish an experimentally useful
    definition of an element. He defined an element as a basic form of matter that cannot be broken down into simpler substances by chemical reactions.

    Answered by Gurjeet Singh (Aug 21, 2017 11:08 a.m.)
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What is collenchyma?
Posted by Mukesh Khandelwal (Aug 21, 2017 6:36 a.m.) (Question ID: 14970)

  • It provided flexibility
    Posted by Rajesh Kumar (Aug 21, 2017 7:51 a.m.)
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  • Collenchyma is a cell and tissue type in which the primary walls are unevenly thickened and consist of homogeneous, more or less elongated living cells; it provides mechanical support to the plant organs where present.

    Answered by Himanshu Singhal (Aug 21, 2017 6:55 a.m.)
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Types of epithelial tissue
Posted by Abhishek Kumar (Aug 21, 2017 5:59 a.m.) (Question ID: 14960)

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  • Epithelial Tissue

    There are three principal classifications associated with epithelial cells. Squamous epithelium has cells that are wider than they are tall. Cuboidal epithelium has cells whose height and width are approximately the same. Columnar epithelium has cells taller than they are wide.
    This illustration shows the three principal classifications associated with epithelial cells. Squamous epithelium has cells that are wider than they are tall. Cuboidal epithelium has cells whose height and width are approximately the same. Columnar epithelium has cells taller than they are wide. There are pictures of each of these types of epithelium: simple squamous, simple cuboidal, simple columnar, stratified squamous, stratified cuboidal, pseudostratifed columnar, and transitional.

    Simple Epithelia

    Simple epithelium consists of a single layer of cells. They are typically where absorption, secretion  and filtration occur. The thinness of the epithelial barrier facilitates these processes. 

    Simple epithelial tissues are generally classified by the shape of their cells. The four major classes of simple epithelium are: 1) simple squamous; 2) simple cuboidal; 3) simple columnar; and 4) pseudostratified.

    Simple Squamous

    Simple squamous epithelium cells are flat in shape and arranged in a single layer. This single layer is thin enough to form a membrane that compounds can move through via passive diffusion. This epithelial type is found in the walls of capillaries, linings of the pericardium, and the linings of the alveoli of the lungs. 

    Simple Cuboidal

    Simple cuboidal epithelium consists of a single layer cells that are as tall as they are wide. The important functions of the simple cuboidal epithelium are secretion and absorption. This epithelial type is found in the small collecting ducts of the kidneys, pancreas, and salivary glands. 

    Simple Columnar

    Simple columnar epithelium is a single row of tall, closely packed cells, aligned in a row. These cells are found in areas with high secretory function (such as the wall of the stomach), or absorptive areas (as in small intestine). They possess cellular extensions (e.g., microvilli in the small intestine, or the cilia found almost exclusively in the female reproductive tract). 

    Pseudostratified

    These are simple columnar epithelial cells whose nuclei appear at different heights, giving the misleading (hence pseudo) impression that the epithelium is stratified when the cells are viewed in cross section. 

    Pseudostratified epithelium can also possess fine hair-like extensions of their apical (luminal) membrane called cilia. In this case, the epithelium is described as ciliated pseudostratified epithelium. Ciliated epithelium is found in the airways (nose, bronchi), but is also found in the uterus and fallopian tubes of females, where the cilia propel the ovum to the uterus.

    Stratified Epithelium
    Stratified epithelium differs from simple epithelium by being multilayered. It is therefore found where body linings have to withstand mechanical or chemical insults. 

    Stratified epithelia are more durable and protection is one their major functions. Since stratified epithelium consists of two or more layers, the basal cells divide and push towards the apex, and in the process flatten the apical cells.  

    Stratified epithelia can be columnar, cuboidal, or squamous type. However, it can also have the following specializations:

    Keratinized Epithelia

    In keratinized epithelia, the most apical layers (exterior) of cells are dead and lose their nucleus and cytoplasm. They contain a tough, resistant protein called keratin. This specialization makes the epithelium waterproof, and it is abundant in mammalian skin. The lining of the esophagus is an example of a non-keratinized or moist stratified epithelium.

    Transitional Epithelia 

    Transitional epithelia are found in tissues that stretch and it can appear to be stratified cuboidal when the tissue is not stretched, or stratified squamous when the organ is distended and the tissue stretches. It is sometimes called the urothelium since it is almost exclusively found in the bladder, ureters, and urethra.

    Answered by Himanshu Singhal (Aug 21, 2017 7:05 a.m.)
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why is cell called structural and functional unit of living organism?
Posted by Navneet Kumar (Aug 20, 2017 11:32 p.m.) (Question ID: 14926)

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  • As many cells together constitute to form the organs and body system. It performs many functions
    Answered by Yash Aggarwal (Aug 21, 2017 6:42 p.m.)
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  • Because structure And function unit of living orgisms Alu
    Answered by Saumya Maurya (Aug 20, 2017 11:39 p.m.)
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Who discovered elements
Posted by Yuvraj Singh (Aug 20, 2017 11:07 p.m.) (Question ID: 14911)

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  • Some elements, such as gold, silver, iron and carbon have been known since ancient times; it is not possible to credit a single person for their discovery. Different elements have been discovered by different scientists.

     1 Chlorine (1774) Carl Wilhelm Scheele
     2 Oxygen (1774) Joseph Priestley
     3 Hydrogen (1776) Henry Cavendish
     4 Nitrogen (Azote) (1778) Daniel Rutherford
     5 Barium (1808) Sir Humphry Davy
     6 Aluminium (1825) Hans Christian Oersted
     7 Radium (1898) Marie Sklodowska Curie & Pierre Curie
    Answered by Gurjeet Singh (Aug 21, 2017 11:03 a.m.)
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What is connected motion
Posted by Yuvraj Singh (Aug 20, 2017 11:06 p.m.) (Question ID: 14910)

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-3newton means
Posted by Aditya Panda (Aug 20, 2017 10:35 p.m.) (Question ID: 14894)

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  • 3 Newton is a net force (a push or a pull) whose magnitude is 3 N.

    A body of mass 3 kg moving with an acceleration of 1 m.s-1 will produce a force of 3 N. (F = Mass times Accleration)

    A body of mass 1 kg moving with an acceleration of 3 m.s-1 will also produce a force of 3 N.

    A body of mass 1.5 kg moving with an acceleration of 2 m.s-1 will also produce a force of 3 N.

    A body of mass 2 kg moving with an acceleration of 1.5 m.s-1 will also produce a force of 3 N.

    Answered by Gurjeet Singh (Aug 21, 2017 11:35 a.m.)
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In which part of a plant chromoplasts are found?
Posted by Ayisha M (Aug 20, 2017 9:58 p.m.) (Question ID: 14859)

  • Plastics
    Posted by Devendra Prajapati (Aug 20, 2017 10:10 p.m.)
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  • In leaf
    Answered by Vk K (Aug 21, 2017 2:28 p.m.)
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  • 1. Chromoplasts are a type of plastids present in the cytoplasm of the plant cells.

    2. They are found in fruits, flowers, roots, and stressed and aging leaves, and are responsible for their distinctive colors.

    Answered by Nitin Upadhyay (Aug 20, 2017 10:29 p.m.)
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  • Chromoplasts are found in the Plastids.
    Answered by Devendra Prajapati (Aug 20, 2017 10:22 p.m.)
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  • Chromoplasts are found in the plastids and it is the part of Leucoplast
    Answered by Devendra Prajapati (Aug 20, 2017 10:13 p.m.)
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What is the valence electrons
Posted by Palani Kalyan (Aug 20, 2017 9:57 p.m.) (Question ID: 14858)

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  • 1. Valence electrons are the electrons located at the outermost shell of an atom.

    2. For example: oxygen has 8 electrons & electronic configuration of oxygen is 2, 6. Therefore, oxygen has 6 valence electrons.

    3. Similarly, Neon's outermost shell has 8 electrons, therefore has 8 valence electrons.

    Answered by Nitin Upadhyay (Aug 20, 2017 10:05 p.m.)
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What is hetrogeneous
Posted by Kiran Padma (Aug 20, 2017 9:44 p.m.) (Question ID: 14838)

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  • Hetrogenous mixture is which donot have uniform composition throughout its mass
    Answered by Yukti Arora (Aug 20, 2017 9:52 p.m.)
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What is hetrogeneous mixture?
Posted by Kiran Padma (Aug 20, 2017 9:44 p.m.) (Question ID: 14837)

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  • Those mixtures which have two distinct part and have a non uniform composition throughout the mixture , shuch mixtures are called Heterogenous mixtures.
    Answered by Devendra Prajapati (Aug 20, 2017 10:16 p.m.)
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  • A mixture in which the different constituents are not mixed uniformly is called heterogeneous mixture.
    Answered by Ayisha M (Aug 20, 2017 10:03 p.m.)
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What is scince
Posted by Anurag Kumar (Aug 20, 2017 9:42 p.m.) (Question ID: 14833)

  • A si stomatitis knowledge of any subject is called science
    Posted by Lalan Kumar (Aug 21, 2017 8:45 a.m.)
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  • "Science" Science is a successful formula to concern or to understand any object,imagination, and even mind of any person.
    Answered by Devendra Prajapati (Aug 20, 2017 10:21 p.m.)
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