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Thursday, 27 October 2011

MULTICELLULAR ORGANISATION OF ANGIOSPERMS


Name the following:
(a)    A group of similar or dissimilar cells having a common origin and a common function :

Ans: Tissue
(b)A group of thin walled,isodiametric ,living cells having intercellular spaces.
Ans: Parenchyma
(b)   Thick walled isodiametric dead cells having narrow lumen with small pores on the lateral walles
Ans: Sclerenchma
(d)A collection of different types of cells having a common function.
Ans: Complex tissues
(e) An angiosperm lacking vessels
Ans: Degenaria
(f)A gymnosperm which has vessels.
Gnetum
(g) The first formed xylem and the latter formed xylem.
Ans: Protoxylem and metaxylem.
(h) Protoxylem formed toward the periphery and metaxylem  toward the center.
Ans: Exarch and Endarch.
(i)Thin walled living cells associated with the sieve tubes.
Ans:-Companion cells.

Thursday, 20 October 2011

How was the Union of South Africa formed?


How was the Union of South Africa formed?
When the English tried to set up their colonies in South Africa, they had to face the Dutch. They fought two Boer Wars against the Dutch. By defeating the Dutch, the English could set up colonies in South Africa. In 1910 these colonies were federated to form the Union of South Africa.
How did the English become the sole master of the Suez Canal?
The Sultan of Egypt, Ismail Pasha, constructed the Suez Canal in 1858 A.D. with the help of France. The Sultan sold his shares to England. In 1908 France too sold her shares to England. Thus England became the sole master of the Suez Canal.
What was Entente Cordiale? What were its terms and conditions?
The Entente   Cordiale was a secret agreement made between England and France. The terms and conditions of this agreement were that France had to give up her claims on Egypt in return for freedom to do what she liked with Morocco.
What led to the Balkan Wars?
The Balkan Wars took place in 1912-13 A.D. Enmity arose between Russia and Austria on the Balkan issue. Austria always opposed Serbia and Russia gave Serbia blind support. This led to the Balkan Wars. Serbia was defeated in the wars.

Saturday, 1 October 2011

social system of Latin America after the second world war


Write a short note on the social system of Latin America after the second world war?
Most of the states of Latin America lack social justice.They are extremely poor and ignorant.Only the people in cities are economically advanced.But those in villages are extremely poor and live in wretched huts.They are [oliticallyt and economically dependent on the outside world.

How did the trends towards international co-operation grow?
The cold war and the atomic weapon have caused the mankind to think that without international co-operation mankind may one day be swept from the face of the earth.And to  have international co operation (a) disputes should be settled peacefully
(b) co –operation with the UNO is necessary (c) a dream for the world government arises.
(d ) hostile bloc must be put to an end (e) there should be non –interference  in the internal affair of other countries (f) various military pact must be discharged (g) nuclear test must be checked (h) imperialism  to be ended (i) disarmament to be achieved and (j) co –operation in economic field necessary

Give an account of the space research carried out by the USSR after the second world war ?

In 1957 Russia astonished the whole world by launching an artificial satellite,’Sputnik’.In 1961 the Russian cosmonaut ,Major  Gagarin became the first men to circle the earth in space.She also soon invented the long range missiles.

How had the USA made great progress in the field of space research after the second world war ?
Soviet Union launched the first satellite ,Sputnik in the earth orbit in 1957.The united states also launched her satellite,”explorer” in 1958.Upto the beginning of 1961 USA sent up thirty satellites into space

How did the USA emerge as a world power after the second world war?
After the second world war,the USA became a world power.It causes were as follows:
1.Economic help given by America during the depression of 1929 A.D :
The world has to face the worst economic depression in 1929 AD.Almost all the countries of the world were affected by it.President Roosevelt of America adopted the policy of new deal to face this depression successfully.he also helped other countries of the world to solve this economic crises.As a result America became the first – rate power in the world.

2.Helping the ALLies durin the war:
In the beginning of war Hitler occupied Poland,Norway,Denmark,Holland,Belgium,half of the france etc.He also bombarded and destroyed her various cities.At this critical moment America declared it participation in the war on the side of the allies.It is her decesive contribution to the defeat of the axis powers.It raised the morale of the allies.America rendered military and financial help to the allies.It totally changed the course of the war.The America president general Eisenhower forced Mussoloni to surrender in 1943.Japan had to surrener in 1945 when two atomic bomb were dropped on Hiroshima and Nagasakhi.Thus ,America played a major role in defeating the Axis powers.This raised her power and prestige in the world.

3.America was the first country to invent Atom bomb.
America was the first country in the world to invent atomic power and to carry out successfully the first experiment of the power .Consequently she became the most powerful country in the world.

4.Assuming the leadership of the Anti-Communist group: After the second world war communism expanded under the Russian influence in Poland,Czechoslovakia,Hungary,Romania,Bulgaria,Albania etc.Thereupon the capitalist countries got alarmed and America came forward to counteract Russia to check the communist influence.Thus America assumed the leadershipof the democratic countries by concluding various aspect.It enhanced her power and prestige in the world.

5.Saving the allies from disastrous effects of the war
Though England and France were victorious in the war they gained  nothing due to heavy lost of life and property.On the contary they had to face the problem of poverty and unemployment.At this critical moment America came forward to help these countries.This enhanced the power and prestige of the USA


6.weakness of England and France: After the second world war,two piower bloc came into being,one led by the USA and the other by Russia.Though England and France came victorious,they suffered much on account of huge loss of life and property.This situation made the USA the first rate power in the world.