Cells are of different shape, size and structure according to the function they need to perform. So, if all the cells become of same size, shape and structure, it will be very difficult for multicellular organisms including humans to adapt better to the environment and survive. Also, the division of labour among the cells will be lost thus leading to difficulties in survival.

Nerve cells are usually branched and very long as they need more surface area to transmit the signals. Due to their long size they can easily carry messages in each and every portion around the body.

In mammals, after maturation, the nucleus disappears from the RBC to provide adequate space for hemoglobin to carry oxygen. Nucleus is responsible for cell division so the blood cells don't divide, they are produced by other cells within bone marrow. This is an adaptation which allows the red blood cell to carry more oxygen.

Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.

Plant Cells

• In addition to containing most of the organelles found in animal cells, plant cells also have a cell wall, a large central vacuole, and plastids. ...
• Plant cells with visible chloroplasts.
• The internal structure of a chloroplast, with a granal stack of thylakoids circled.

Because anytime the natural causes can occur or else any problem can appear

Mesosome is a convoluted membranous structure formed in a prokaryotic cell by the invagination of the plasma membrane. Its functions are as follows:

(1) These extensions help in the synthesis of the cell wall and replication of DNA. They also help in the equal distribution of chromosomes into the daughter cells.

(2) It also increases the surface area of the plasma membrane to carry out various enzymatic activities.

(3) It helps in secretion processes as well as in bacterial respiration.

The work done is 0. Because coolie carries a load make 90 degree angle andwhen the 90 degree angle is formed the work done is 0.

A n s w e r :
The work done will be zero because a coolie carries a load make an angle of 90 degree wherever the 90 degree created the work done will be zero

What is the objective of planning

 Postural deformities imply not having proper alignment of body parts. An individual who has postural deformities cannot perform his work efficiently. Some postural deformities are kyphosis, flat foot, knock knee etc.

Kyphosis In kyphosis, there is an increased curvature of the dorsal chest region.
Corrective Measures:

1.  Regular and appropriate exercises.
2.  Regular yogic exercises (Chakrasana, Dhanurasana, Bhujangasana, etc).
3.  Swimming is recommended.
4. Hold your hands back in vishram position and walk consciously, then slowly stretch them backward.
5.  Leaning back on a chair and taking shoulders backwards can help to stretch the chest muscles. Lordosis It is the inward curvature of the spine with protuding abdomen, resulting in a hollow back.

 

The characteristics of prokaryotic cells are:

• Membrane bound cell organelles such as Mitochondria, Golgi apparatus, Chloroplasts are absent.
• A membrane bound well defined nucleus is absent.
• Genetic material is circular DNA and occurs naked in the cell cytoplasm. It is attached to the cell membrane and called nucleoid.
• The cell size ranges from 0.1 to 5.0 micrometre in size.
• The cell wall is a rigid structure which is made up of polysaccharides.

The characteristics of prokaryotic cells are: Membrane bound cell organelles such as Mitochondria, Golgi apparatus, Chloroplasts are absent. A membrane bound well defined nucleus is absent. Genetic material is circular DNA and occurs naked in the cell cytoplasm. ... The cell size ranges from 0.1 to 5.0 micrometre in size.

Answer: If the plasma membrane ruptures or breakdown then the cell will not be able to exchange material from its surrounding by diffusion or osmosis. Thereafter the protoplasmic material will be disappeared and the cell will die.

What help do you need ? "Project file" ?

If there was no Golgi apparatus, various substances would not be in a position to be transformed in proper forms for further use. Certain substances, like protein and lipid, are important for the formation of plasma membrane. Hence the absence of Golgi apparatus will hamper the formation of new cells during cell division.

Let the positive square root be 'x'
The number is x^2

x^2 +x = 90

x^2+x-90=0
x^2 +10x-9x-90= 0
x(x+10)-9(x+10) =0

X=9, x=-10
x cannot be -10 because square root is positive number.

there x = 9

The number is 81.
 

1. he length of questionnaire should be proper one.
2. The language used should be easy and simple.
3. The term used are explained properly.
4. The questions should be arranged in a proper way.
5. The questions should be in logical manner.
6. The questions should be in analytical form.
7. Complex questions should be broken into filter questions.
8. The questions should be described precisely and correctly.
9. The questionnaire should be constructed for a specific period of time.
10. The questions should be moving around the theme of the investigator.
11. The answers should be short and simple.
12. These answers should be accurate.
13. The answers should be direct one.
14. The answers should be relevant to the problem.
15. The answers should be understand able to everyone of respondents.

In desert plants, rate of water loss gets reduced due to the presence of cuticle.

The epidermis of the desert plant has a thick layer of cutin that is called cuticle. It is a waxy layer present on the leaves whose primary function is to reduce the water loss from the plant.

पठतः

पठतः

पठसि

Sorry I don't know

Goblet cells derive their name from their goblet, cup-like appearance. They arise from pluripotent stem cells. The primary function of goblet cells is to secrete mucin and create a protective mucus layer. Regardless of fixation, goblet cells have a distinctly polarized morphology. Their nucleus is at the base of the cell, along with organelles such as mitochondria, endoplasmic reticulum and Golgi. The remainder of the cell is filled with membrane-bound secretory granules filled with mucus.

Y

Given:

• Cost price of watch is Rs 135.
• Overhead expenses on watch is Rs 5.
• Selling Price of watch is Rs 154.

 

Solution: Total cost price of watch = (Original price + Overhead expense )

 

➟ Total C.P of watch = Rs (135 + 5) = Rs 140

 

And, The S.P of watch is Rs 154.

 

On Comparing both S.P and C.P we get

 

➢ S.P > C.P { Hence, There is Profit }

 

 Profit = Selling Price – Cost Price 

 

 Profit = Rs (154 – 140)

 

 Profit = Rs 14

 

Now, we have to find the profit percent :

 

 Profit % = (Profit/C.P x 100) % 

 

 Profit % = ( 14/140 x 100)%

 

 Profit % = ( 1400/140 ) %

 

 Profit % = 10 %

 

Hence, The the profit percent made by retailer is 10%.

Liberalism: Derived from Latin word 'liber'means 'free'.It meant differently to different people.
Middle class: For the new middle classes it stood for freedom of individual and equality of all before law.
Politically: It emphasized government by consent. There was to be an end to autocracy and clerical privileges. The right to vote was meant to be only for property-owning men. The lower classes were therefore not included. ln general, it stood for the inviolability of private property and freedom of the markets from state-imposed restrictions on the movement of goods.

A n s w e r : 

In Munich Einstein scored good marks in all the subjects

 

Albert Einstein was a very good student. He went to a school in Munich because his family had moved from Ulm to Munich when he was 15 months old and scored good marks in almost every subject.

I am written in paragraph Poltical science ,occasionally called politology is a social science which with deal with system of government & the analyse of poltical activity poltical thoughts associated constitution & poltical behavor

We participate in class discussion or not is depended on our nature

Why does food get spoilt

This is a sample answer. Students are advised to write the answer based on their own experiences and observations.

I interact very politely in class during class discussions. Yes, I always participate in class discussions

or

 I speak less but listen to others more.

DVD stands for Digital Versatile Disc. It is commonly known as Digital Video Disc. It is a digital optical disc storage format used to store high capacity data like high quality videos and movies. It is also used to store operating system. It is invented and developed by 4 companies named Philips, Sony, Toshiba and Panasonic in 1995. DVDs provide higher storage capacity than CDs( compact disc) and can be played in multiple types of players like DVD players

DVD stands for Digital Versatile Disc. It is commonly known as Digital Video Disc. It is a digital optical disc storage format used to store high capacity data like high quality videos and movies. It is also used to store operating system. It is invented and developed by 4 companies named Philips, Sony, Toshiba and Panasonic in 1995. DVDs provide higher storage capacity than CDs( compact disc) and can be played in multiple types of players like DVD players.

DVD - Digital Versatile Disc .

DVD - Digital Versatile Disc .

DVD stands for Digital Versatile Disc. It is commonly known as Digital Video Disc. It is a digital optical disc storage format used to store high capacity data like high quality videos and movies. It is also used to store operating system. It is invented and developed by 4 companies named Philips, Sony, Toshiba and Panasonic in 1995. DVDs provide higher storage capacity than CDs( compact disc) and can be played in multiple types of players like DVD players.

Radicle:

Radicle is a small embryonic root of the plant. It is a part of the seedling, which rises first from the seed during the process of seed germination.

Lenticels

Lenticels are tiny openings on the bark of older trees.They help in gaseous exchange

Plumule:

Plumule is the part of the seed embryo that grows into a shoot after the process of seed germination. It is a small portion of the plant, with a bud-like structure, giving rise to the first true leaves and is grown into a plant giving rise to several leaves, branches, flowers, and seeds.

 

A vertical section (or cutting) through the soil showing the different layers of soil is called soil profile. Soil profile consists of three different layers of soil. Horizon Each layer of soil is called a horizon. The three lavers of soil in the soil profile are: 1) A-horizon (or Top-soil) 2)B-horizon (or Sub-soil) 3)C-horizon (or Sub-stratum) 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 .

A vertical section (or cutting) through the soil showing the different layers of soil is called soil profile. Soil profile consists of three different layers of soil.

Horizon

Each layer of soil is called a horizon. The three lavers of soil in the soil profile are:

1) A-horizon (or Top-soil)

2)B-horizon (or Sub-soil)

3)C-horizon (or Sub-stratum)

• 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 .

 

△ABC≅△FED    [ Given ]

 

ABC↔FED    [ Given ]

 

The corresponding congruent parts of the triangles are :

 

(i)   ∠A↔∠F

 

(ii)  ∠B↔∠E

 

(iii) ∠C↔∠D

 

(iv)  AB↔FE

 

(v)  BC↔ED

 

(vi)  AC↔FD

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Suberin

4a-2a-8+4a+a²+2a²