Explore topic-wise InterviewSolutions in Current Affairs.

Various kinds of unicellular organisms or living things first appeared in water, they are known as ‘Protozoa’.

(a) An enormous cloud of hot gases and dust formed in space.

(b) The sun and the planets were formed. 

(c) Water bodies appeared on the earth’s surface. 

(d) Protozoa appeared in water

The circular motion of the great cloud caused it to divide into several portions thus creating the sun and planets.

1. Around 4-5 million years ago, an enormous cloud of very hot gases and dust was spinning at a great speed in space. 

2. Its circular motion and great speed caused its division into several portions. 

3. This splitting created the sun and the planets in our solar system.

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune are the planets in our solar system.

1. Animals move to find food and for other purposes. 

2. Some species of animals lay eggs and their young ones are born out of the egg; whereas animals of some 

3. other species give birth to their young ones.

1. Water 

2. Protozoa 

3. Multi cellular 

4. Microscope 

5. Plants, animals

After the creation of unicellular organisms in water, gradually, multicellular living organisms developed from the unicellular ones.

1. Move 

2. Eggs 

3. Birth 

4. Tiny 

5. Species 

6. Unicellular

An enormous cloud of very hot gases and dust spinning at a great speed was formed in space.

(C) Persons living in joint families are represented by the circle. According to the given conditions, the persons should be unmarried and not working as school teachers. So, the region should not be a part of either the square of the triangle. Thus, the given conditions are satisfied by the regions E.

Book, Pen, Pencil are neither subset of one another nor have anything in common. Therefore, our answer is (C).

(B) Bidi smokers is a subset of smokers and cancer patient may be a smoker, bidi smoker and non-smoker. Hence third object shares a common relationship with first and second object as well.

Batsman is a subset of Cricket and, Stick is something unrelated to Cricket, therefore, our answer is (D).

(A) School teacher are represented by the triangle. But according to the given conditions, persons are neither married nor do they live in joint families. So, the regions should to be a part of either the square or the circle. Such a region is F.

(A) As in the above questions, married teachers are represented by B and C. Bit. here, the given  conditions lay down that the persons should not be living in joint families. So, the required regions  should lie outside the circle. Since C lies outside the circle, so the given conditions are satisfied by  the person denoted by the regions C.

(C) Married persons living in joint families are presented by the region common to the square and the circle i.e., D and B. But, according to the given conditions, the persons should not be school teachers. So, B is to be excluded. Hence, the required condition is denoted by region D.

(B) Married teachers are represented by the region common to the square and the triangle i.e., B  and C. But, according to the given conditions, the persons should be living in joint families. So, the  required regions should be a part of the circle. Since B lies inside the circle, so the given  conditions are satisfied by the persons denoted by the regions B.

Bipedalism means walking or running on two feet.

Their fossils were discovered in Olduvai Gorge, Tanzania by Louis Leaky and his team. 

1. The super family Hominoidea branched into Hominidae and Hylobatidae families. The species of the respective families are called Hominids and Hylobatids. The Hominids that is, Humans, Chimpanzees and Bonobos, Gorillas and Orangutans, diverged away from the Hylobatids that is Gibbons.

2. The Hominidae family branched into Homininae and Ponginae subfamilies. The species of the respective subfamilies were called Hominines and Pongines. The Hominines that is, humans, Chimpanzees, and Bonobos and Gorillas diverged away from the Pongines that is the Orangutans. 

3. The Homininae subfamily branched into Hominini and Gorillini tribes. Humans, Chimpanzees, and bonobos branched away from the Gorillas.

4. The Hominini tribe branched into Genus Homo and Genus Pan. That is, the ancestral human species branched away from the Chimpanzees and the Bonobos. As such, Chimpanzees and Bonobos are the closest relatives of the Humans. The evolution of genus Homo from the super family Hominoidea took about 30 million years. The emergence of genus Homo brought human-like creatures on the earth’s surface about 5.6 million years ago.

The Hominoids were quadrupeds. They walked on all four limbs, but, their forelimbs were flexible. The Hominids gradually adapted an upright posture. Hominines further adapted to bipedalism. The skeletal structure and the muscles also adjusted over a period of time to the upright posture and the bipedal motion, which freed the forelimbs.

The forelimbs developed precision grip and power grip and evolved into hands. This greatly helped in hunting and defending from predators as hands could be used to make tools and also use them. Walking on two legs also provided a greater long-distance vision and helped them to cover long distances without spending much energy.

The use of tools is not confined to only humans. For e.g. some monkeys and apes use stones as tools to break nuts. But use of tools by humans is far more advanced compared to the monkeys and apes. Wood, bones, and stones were used to make tools. They were mainly used for hunting or defending from predators. The use of stone tools is studied as the Stone Age in history.

The making and use of stones tools were responsible to the evolution of forelimbs into hands and also the growth in brain size. The oldest known stone tools are the ‘Oldowan stone tools’ from Ethiopia which are dated to a period 2.6 million years ago. The skill and advancement in making stone tools have made historians to classify the Stone Age as Paleolithic, Mesolithic and Neolithic stone ages.

In the course of time, humans began to produce metals from ores and make copper, bronze and iron tools which are studied in history as the respective metal ages. The Australopithecus species is said to have first used the naturally available stones as tools. But, the making of stone tools from naturally available stones and using them is positively identified to have begun with Homo habilis.

It is often defined as a group of organisms capable of interbreeding and producing fertile off springs. Humans, Gorillas, and Gibbons are some examples of different species.

Amphibians are capable of existing on land as well as in water. 

‘Survival of fittest’ can be seen as evidence to the evolution of different species.

The Hominoids lived on trees.

Our Earth is a small object in the Galaxy called the “Milky Way”

Earth initially when formed, was a white-hot mass of molten rock. It had frequent volcanic eruptions and plenty of collisions with comets and meteors. One such large collision is believed to have caused the Earth’s tilt and the formation of the moon. These are a couple of important factors along with many others, which formulated the weather and climate of the Earth.

All the species belonging to the Hominoidea Super Family are called Hominoids. They lived on trees. The trees provided them protection from the predators. The Hominoids were food gatherers. They procured food by gathering seeds, nuts, fruits, berries, tubers, etc. they were not meateaters.

The immediate provocation for World War II was the German tanks driving into Poland on September 1,1939. Hitler invaded Poland as punishment for refusing to hand over the port of Danzig to Germany. Polish territory lay between two parts of Germany. Hitler thought the takeover of Poland will also be a small military operation. But Poland had a defense pact with Britain which jumped on to the Polish side and France joined them a day later. This marked the beginning of World War II.

Murder of Archduke franz Ferdinand of Austria by a Serbian fanatic.

John Wycliffe was an early leader of the Reformation. He belonged to England.

The Big Bang Theory states that all the matter in the universe was present at a single place in the form of a hot and dense fireball. A big bang scattered it in all directions creating galaxies. 

Correct option is (c) Matsya – Virat Nagar

1. Individual or collective actions of human beings have consequences. 

2. The consequence result in an environment that may be either favourable or unfavourable for the progress of the society. 

3. This affects our day-to-day life.

1. The past, present and future are linked by a continuous chain of events. 

2. The Indian people’s struggle for independence was the action that led to the Indipendence of India. 

3. The events of today are linked with past actions. 

4. Therefore, the future depends on past events. 

5. This is what we learn from history. 

6. For example, we learn that man began to make tools and make use of fire from the materials in nature.

(b) Talent – Unit of weight

The 8^th summit of Non-Aligned countries was held at Harare. Rajeev Gandhi was the Indian Prime Minister who participated in it.

Correct option is  (a) Potana

Correct option is  (d) Champa

Follow the map of the textbook

Correct option is  (c) Nimi

Correct option is  (b) Bahubali

Some plants are such that if their twigs are cut and planted in the soil then sometime later a new plant emerges from it It is called grafting. Like rose, sugarcane, orange, kaner, lemon, mogra, jasmine etc. The Money Plant can also be planted with a twig.

Quakers were members of a Christian group called the Society of Friends who, while laying emphasis on the Holy Spirit, rejected outward rites and an ordained ministry. George Fox was the founder of the society in England. Quakers have the reputation of actively working for peace and opposing war.

Plants can grow in water, on the wall, in a pot, other than the grounds.

The people of Paris angered by the action of the Swiss guards in shooting and killing many of them hunted down the supporters of monarchy under their leader Marat. In three days, from September 2, about 1500 suspected dissidents were put in prison. After a trial, they were killed and this incident is called “September Massacres”

Boston Tea Party was a protest against the British Parliament which had levied tax on tea in order to promote the business of the East India Company. In December. 1773, a group of men disguised themselves as Native Americans boarded the cargo vessels and threw the tea overboard. This was done publicly before a large sympathetic crowd. It was a challenge which led to war between the rebellious colonies and England.

Gajarghas came to India from London is False.

Patharchatta (Bryophillum) is grown from its leaves