Tiny disc-shaped cells that help regulate blood flow when any part of the body is damaged, thereby aiding in fast recovery through clotting of blood.

An order had been received from Berlin that only German would be taught in the schools of Alsace and Lorraine. This order had far-reaching effects on the life at school. M. Hamel, who had been teaching French at the village school for the last forty years would deliver his last lesson that day.
It was in honour of the last lesson that M. Hamel, the teacher had put on his best clothes. Old men of the village were sitting quietly at the back of the classroom. They were sad as well as sorry for they had not gone to school more. They had come to thank the master for his forty years of faithful service and to show respect for the country that was theirs no more.

Given: 

Principal (P) = ₹ 26,400, Time (n)= 2 years 4 months, Rate of interest (R) = 15% p.a.

Amount for 2 years (A) = P(1+R/100)^n

=26400(1+15/100)²

= 26400(1+3/20)²

=  26400(23/20)²

= 26400(23/20)×(23/20

=  (264×23×23)/4= 66×23×23

= ₹34,914

Interest for 4 months= 4/12=1/3

Interest for 1/3 years at the rate of 15% = (34914×15×1)/3×100

= (34914×5)/100

= ₹ 174570/100

= ₹ 1745.70

Total amount = ₹ 34,914 + ₹ 1,745.70

= ₹ 36,659.70

The amount  she will pay at the end of 2 years and 4 months to clear the loan=  ₹ 36,659.70

Three features of the India Constitution are:

• The Indian Constitution is considered as one of the lengthiest Constitutions in the world.Originally, the Constitution had 395 Articles and 8 Schedules. Over the years, several amendments have been made to our Constitution which has made it more voluminous. 

• India has a Parliamentary system of government. In a Parliamentary form of government, the Parliament of the country has the powers to make and execute laws.

• The Constitution of India gives single citizenship to the people of the country. All the people irrespective of the states or territories in which they reside are the citizens of the country. This is unlike USA, where a citizen is a citizen of USA and the state in which he/she resides.

The Permanent Settlement of Bengal was brought into effect by the East India Company headed by the Governor-General Lord Cornwallis in 1793. 

Density is the property of substance.
Mass of substance per unit volume is density.
If mass increases, density of substance increases.
Density is denoted by d or ρ. Thus,
 ρ = m/v

The right to freedom is a cluster of many freedoms like

Freedom of speech and expression, which enable an individual to participate in public activities.

Freedom to assemble peacefully without arms, on which the State can impose reasonable restrictions.

Freedom to form associations or unions on which the State can impose reasonable restrictions.

Freedom to move freely throughout the territory of India though reasonable restrictions. For example, restrictions may be imposed on movement and travelling, so as to control epidemics.

Freedom to reside and settle in any part of the territory of India which is also subject to reasonable restrictions to safeguard or protect indigenous and tribal peoples from exploitation and coercion.

Freedom to practice any profession or to carry on any occupation, trade or business on which the State may impose reasonable restrictions for example there is no right to carry on a business which is dangerous or immoral.

Nearest thousand of 4268 is 4000

Principal = Rs.64000

Time = 3 years

Rate of interest = 15/2 %

No. of compounds per year , n = 1

Hence he will get Rs.79507 on maturity

(i) We have 243 = 3 x 3 x 3 x 3 x 3


The prime factor 3 is not a group of three.
∴ 243 is  not a perfect cube.
Now, [243] x 3 = [3 x 3 x 3 x 3 x 3] x 3
or, 729, = 3 x 3 x 3 x 3 x 3 x 3  
Now, 729 becomes a [perfect cube
Thus, the smallest required number to multipkly 243 to make it a perfect cube is 3.

(ii) We have 256 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2

Grouping the prime factors of 256 in triples, we are left over with 2 x 2.
∴ 256 is  not a perfect cube.
Now, [256] x 2 = [2 x 2 x 2 x 2 x 2 x 2 x 2 x 2] x 2
or, 512 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
i.e. 512 is a perfect cube.
thus, the required smallest number is 2.

(iii) we  have 72  = 2 x 2 x 2 x 3 x 3

Grouping the prime factors of 72 in triples, we are left  over with 3 x 3
∴ 72 is  not a perfect cube.
Now, [72] x 3 = [2 x 2 x 2 x 3 x 3] x 3
or,     216 = 2 x 2 x 2 x 3 x 3 x 3
i.e. 216 is a perfect  cube
∴ The smallest number required to multiply 72 to make it a perfect cube is 3.

(iv) We have 675 = 3 x 3 x 3 x 5 x 5
Grouping the prime factors of 675 to triples, we are left over with 5 x 5

∴  675 is not a perfect cube.
Now, [675] x 5 = [3 x 3 x 3 x 5 x 5] x 5
Now, 3375  is a  perfect cube
Thus, the smallest required number to multiply 675 such that the new number is a perfect cube is 5.

(v) We have 100 = 2 x 2 x 5 x 5
The prime factor are not in the groups of triples.


∴  100 is not a perfect cube.
Now, [100] x 2 x 5 = [2 x 2 x 5 x 5] x 2 x 5
or,   [100] x 10 = 2 x 2 x 2 x 5 x 5 x 5

1000 = 2 x 2 x 2 x 5 x 5 x 5

Now, 1000 is a perfect cube
Thus, the required smallest number is 10

“No one should have to spend their final days in dirt and squalor,” says George Rakesh Babu, a 40-year-old man who has made it his life’s mission to help as many of Hyderabad’s abandoned and sick elderly as possible.

George co-founded the Good Samaritans India trust in 2010, but has been welcoming the needy into his home for a decade now.

A typical day for the 40-year-old involves answering a minimum of eight calls from people telling him about abandoned and sick elderly persons in their areas. Once he finds the person, he goes to the nearest police station to inform them about the rescue, and then he takes the person to one of his three shelters in Alwar, Aler and Warangal.

Rumination: Ruminants swallow the food without chewing. After feeding, they bring the food from the stomach back into the mouth and chew it leisurely. This process is called rumination and such animals are called as ruminants. Rumination is also called second chewing.

The process of digestion in ruminants:

• Grass-eating animals swallow the food quickly and store it in the rumen. Rumen also inhabits cellulose digesting bacteria which establish a symbiotic relationship with the animal stomach.
• Digestion in ruminants is a good example of symbiosis. Microorganisms present in the stomach of ruminants help in digesting cellulose and in turn obtain shelter and nourishment form the animal. A symbiotic relationship exists between microorganisms and the ruminants.
• As rumen is full, the food is taken into second part of the stomach, the reticulum.
• Digestive juices of the reticulum partially digest the food. The partially digested food in the reticulum is called as cud.
• While resting, cow brings back the cud into the mouth for regurgitation.
• Food is chewed completely and swallowed into omasum for further digestion.
• Then the food moves into abomasum for digestion brought about by digestive juices.
• A large sac-like structure called the caecum lies between the small and large intestines.
• The symbiotic bacteria present in the caecum help in the complete digestion of cellulose. Digestion of food is completed in the intestine.
• As the symbiotic bacteria are not present in the human digestive system, humans cannot digest cellulose.

(i) The process of separating grain from chaff and hay with the help of wind is called winnowing.

(ii) When the grain mixed with chaff and hay is made to fall from a height in blowing wind, the grain, being heavy, falls straight to the ground, whereas the chaff and hay, being much lighter, are carried some distance away by the wind. In this way, the grains form a separate heap and can be collected and packed in gunny bags.

After harvesting the crop, the next step is threshing. The process of beating out the grains from the harvested crop plants is called threshing. Threshing is done to take take out the grain from its outer covering called chaff. A machine called thresher is also used for the threshing process.

Weedicides are uses to stop the growth if unwanted plants called weeds in rhe field along with the desirable crop. Weeds need to be cut as they compete with the crop for space, sunlight and nutrients. They thus reduce the yield. Weedicides need to be used with precautions as they harm the animals along with the farmers.

Two popularly used weedicides are   2,4-D Ethyl ester, Neem extract, Glyphosate etc.

 Drip system

There is network of narrow pipes with small holes in the fields.When water flows through the narrow pipes,it fall drop by drop at the position of roots of the plants.This water is absorbed by the soil in the root zone of the plants and utilised by the plant.There is no wastage of irrigation of water.

Advantages

1)It provides water to plants drop by drop.So water is not wasted at all.

2) It minimises the use of water in agriculture.It is useful in those regions where the availability of water is poor.

Sprinkler system

A main pipeline is laid in the field.Perpendicular pipes having rotating nozzles at the top are joined to the main pipelines at regular intervals.When water from a tube-well is allowed to flow through the main pipelines under pressure with the help of a pump,it escapes from the rotating nozzles.This water gets sprinkled on the crop plants as if it is raining.

Advantages

1)It is more useful for the uneven land where sufficient water is not available.

2)It is very useful for sandy soil

Manure is a nutrient-rich organic matter used as organic fertilizer in agriculture.
The advantages of adding manure to soil or in agricultural fields:-
1)  It helps to improve the soil structure.

2) It increases the nutrient content in the soil.

3)  It also helps to hold moisture in the soil and enhances the activity of micro-organisms.