Atomic number table

 Elements name          Symbol     Atomic.no

    Hydrogen                     H.                      1

    Helium                        He                      2

    Lithium                        Li                      3

    Berryllium                   Be                     4

    Borone                          B                       5

    Carbon                          C                       6

    Nitrogen                       N                       7

    Oxygen                         O                       8

    Fluorine                       F                        9

     Neon                            Ne                     10

    Sodium                        Na                     11

    Magnesium                 Mg                    12

   Aluminium                  Al                      13

   Silicon                           Si                       14

   Phosphorus                  P                       15

   Sulphur                         S                       16

   Chlorine                       Cl                      17

     Argon                         Ar                      18

     Potassium                  K                       19

   Calcium                       Ca                      20   

*------------*--------------*----------------*---------------*  

Control and coordination

Note- Stimuli is the technique for how to respond and react to the changes in the environment.

Response of organisms to the stimulus is generally identified by movement.

This is the image of sensitive plant named as mimosa pudica.....

Sunflower

      Sunflower is also a major sensitive plant. Sunflower is turning it's position in the direction of sun by this reason sunflower is know as sunflower.

   Look at the image of sunflower

      

Sunflower--

NOTE- The plants do not have any nervous system.

Plants harmones...

 There are four major types of plant hormones name as

  1. Auxins.

  2. Gibberellins.

  3. Cytokinins.

  4. Abscisic acid.

  

Biology notes chapter 1 life processes

                  Life processes

Q1. What is ingestion?

Ans. Ingestion is the process of taking food in our body for energy. It is simply called as eating of food.

Q2. What is digestion?

Ans. Digestion is the process in which the food particles which contains any large, insoluble and unbreakable particles are broken down into small particles .

Q3. Define absorption.

Ans. Absorption is the process in which the digested food passes through the intestinal wall into blood is called absorption.

Q4. What is assimilation?

Ans. Assimilation is the process in which the absorbed food is taken in by body cells and used for energy.

Q5. Define egestion.

Ans. Egestion is the process in which the undigested food is remove from the body.

Biology notes 1 chapter life process

                   Life process

Living things-Those things which are alive are called living things.

Q1. What is the criteria to observe something is alive?

Ans- The most common criteria to identify something is alive or living is movement. All the living things are moving by themselves not by any external force.

*NOTE. Plants are also a living thing but Thier movement is observed with difficulty.

Non-living things-those things which are not alive . Non living things cannot move by themselves without any external force provided.

Example- chair,bed,fan,box.

Q2. What is life processes?

Ans- The common function performed by all the living organisms are known as life processes. Like- transport and excretion, control and coordination, growth, movement and reproduction.

Q3. What is the common energy source of living organisms?

Ans-Food is the most common energy source of living organisms.

Glucose-glucose is the simplest food and it is is also called simple sugar.

Starch- starch is made from glucose and starch is also known as carbohydrate.

                           Nutrition

Nutrition is the process of intake of nutrients [like carbohydrates, fats, protein, minerals, vitamins and water] by an organisms.

                    Modes of nutrition

1. Autotrophic.

2. Heterotrophic.

Autotrophic mode of nutrition

           -Autotrophic is a mode of nutrition in which an organisms synthesis it's own food from the simple inorganic materials.

*NOTE- The autotrophic organisms contains the green pigment called chlorophyll which is green in colour.

Q4. What are autotrophs?

Ans- The organisms which make their own food by carbon dioxide and water are called autotrophs.

 Heterotrophic mode of nutrition

        -Heterotrophic is the mode of nutrition in which the organisms cannot make their own food by simple inorganic materials, and depends on other organisms for their food.

*NOTE- All the animals have heterotrophic mode of nutrition.

Types of heterotrophic nutrition

1. Saprotrophic nutrition.

2. Parasitic nutrition.

3. Holozoic nutrition.

Saprotrophic nutrition- Saprotrophic are the nutrition in which the organisms take their food by decaying matter of dead plant , dead animals.

Parasitic nutrition- Parasitic are the nutrition in which an organisms derives its food from the body of another organisms.

Example-Roundworm

Holozoic nutrition- Holozoic is the nutrition in which the organisms take their complex organic food by the process of ingestion.

Q5. What is photosynthesis?

Ans- Photosynthesis is the process by which the plants make their own food from carbon dioxide and water in the present of ⛅ sunlight

Carbon dioxide+water+light energy  = glucose + oxygen

Condition necessary for photosynthesis

1. Sunlight

2. Chlorophyll

3. Carbon dioxide

4. Water

Q6. How the plants obtain water for photosynthesis?

Ans- the plants take water for photosynthesis by their roots which is present under the ground.

Division of animals by their eating habits

1. Herbivorous

2. Carnivorous

3. Omnivorous

1. Herbivorous- The animals which eat only plants and they depend only on plants are called herbivorous.

2. Carnivorous- The animals which eat only other animals flesh or meat are known as carnivorous.

3. Omivorous- The animals which eat both plants and animals are known as omnivorous.

Some topics are not written these topics are provided next day- Studentstunt.....,..

Formal sample letter

 you are mukesh/manju living at 7/31, kamla nagar, kanpur. there are many stray dogs in your colony. they chase vehicles, trouble strangers and sometimes bite the children. they are a nuisance. write a letter of complaint to the municipal commissioner, kanpur requesting him to instruct the concerned staff to take appropriate action. (100 - 150 words)

Kanpur

10/11/2020

Municipal commissioner

Dear sir or madam

 I want to express my problem regarding the voilance created by stray dogs 🐕 in our colony . There are plenty of dogs are present in this colony and they have become a threat to people in our colony . They chase the vechiles and bite them forcely . One day two of them chase the cyclist that is going for his journey . All the dogs combinely bite him in the leg of cyclist. And all the locality people have many problems facing by these dogs.

Please consider this issue as serious and find a way to solve this issue at the earliest

Thanks for your time

Your sincerely

Mukesh

Water resources

 Water is present at a great amount in the whole world . Three fourth of the resources are covered with water . Water can be a renewable resource if it is use properly and by nature friendly way . We have to use less water in a particular day . We can live without food be a several weeks but without water we cannot live a couple of days. 

Water is a best type of resource which is present in our earth and this is very very important and necessary for the survival of all the living organisms. Water is used in all the types of food to make it prepare .

Some uses of water are

1. Water is a common drinking resource
2. Water is used for washing the clothes.
3. Water is used for washing the utensils.

Water is essential for the growth of plants fast.

The chemical formulae of water is H2O.

For making of water two mole of hydrogen and one mole of oxygen is required. 

              If you can care water

              Water can care you

A letter to God questions and answers

Q1. Who was lencho?

Ans. Lencho was a small farmer lived alone in entire valley. Lencho is a very hardworking farmer.

Q2. Where was the house of lencho is situated?

Ans. The 🏠 house of lencho is situated at sat on the crest of low hill.

Q3. Which storm is arrived at lencho's crop field?

Ans. Hailstorm.

Q4. Why did lencho say the rain drops were like new coins?

Ans. Lencho said that rain Drops were like new coins because he thought that these drops are very useful to his crop. 

Q5. What happened to lencho's field?

Ans. Lencho's field destructed heavily by hailstorm.

Q6. What is the meaning of pesos?

Ans. Pesos is the currency of several Latin American countries.

Q7. Who read the letter written by lencho?

Ans. Postmaster.

Q8. What did the postmaster do when he read lencho's letter ?

Ans. Postmaster give him a 70 pesos.

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A letter to God short summary...

 A letter to God

                        By-- GL.Fuentes

A letter to God is very interesting lesson written by GL.Fuentes

This lesson is about the story of a small farmer Lencho . His house is situated alone in entire valley. He is very hardworking farmer .

One day the hailstorm is arrived at his valley and it destruct his crop of 🌽 corn .And Lencho is very sad about his crop and then he decided to write a letter to the god for give him 100 pesos (pesos is a currency). And he post the letter to God by the post office. When the postmaster read his faithfull letter postmaster decided to give him a pesos by taking it from some staff. Postmaster give him 70 pesos for helping Lencho.

When Lencho see 70 pesos he angry to God for cutting his 30 pesos . After all he think that the postmaster stole his money because he think that God is always write .