PS TET Paper 1: Environmental Studies Test - 3 - PS TET MCQ

The Thar Desert covers the states of Rajasthan, Haryana, Punjab and Gujarat in India.

Bronze is an alloy that consists of primarily copper and tin. It also includes some other metals such as nickel or zinc, aluminium, manganese. Copper is commonly found 12 to 12.5% in Bronze. It also includes non-metals such as arsenic, phosphorus, or silicon. Hence, the correct answer is, 'Copper and Tin.'

Environmental studies at the primary stage envisage exposing children to the real situations in their surroundings to help them connect and to make them sensitized towards the prevailing environmental issues.

• Environmental studies have been regarded as a life-long process concerned with the total environment aimed at developing and sharpening awareness, knowledge, skills, attitudes, values, and concern for environmental improvement and protection. 
• It not only helps children to get acquainted with their own environment but also strengthens their bond with it.

Coal is different from the others. It is found at its site of deposition as a solid and relatively pure massive organic substance, whereas Petrol, paraffin wax and grease are related to each other. Petroleum is recognized as a liquid that migrates readily from its place of origin into porous reservoir rocks. Paraffin wax comes from petroleum. It is recognized as a by-product that is created when crude oil is refined. Grease, thick, oily lubricant comprises inedible lard, a petroleum-derived or synthetic oil containing a thickening agent.
Hence, the correct answer is, 'Coal.'.

Earth Day is a yearly occasion, celebrated on April 22. On this day, occasions are held worldwide to exhibit support for ecological assurance. It was initially celebrated in 1970, and is presently planned all inclusive by the Earth Day Network.

Snakes:

• Snakes can't hear the sounds but respond only by feeling the vibrations through their skin.
• They do not have external ears.
• They only feel the vibrations on the ground.
• Of the many kinds of snakes found in our country, only four types of snakes are poisonous.
• They are Cobra, Common Krait, Russel’s Viper (Duboiya), Saw-scaled Viper (Afai).
• A snake has two hollow teeth (fangs).
• When it bites, the poison enters the person's body through the fangs.
• There is a medicine for snake bites.
• The medicine is made from the snake's poison and is available in all government hospitals.
• Snakes are friends of the farmers.
• They eat the rats in the fields, otherwise, rats would eat the crops.

Thus, 
Statement A): Snake feels the vibrations produced on the ground: Correct
Statement B): Snakes do not have ears: Correct
Hence, Both A) and B) are true and B) is the reason for A)

Radiation effects are also classified in two other ways, namely somatic and genetic effects. Somatic effects appear in the exposed person. The delayed somatic effects have a potential for the development of cancer and cataracts. Acute somatic effects of radiation include skin burns, vomiting, hair loss, temporary sterility or subfertility in men, and blood changes. Chronic somatic effects include the development of eye cataracts and cancers. The second class of effects, namely genetic or heritable effects, appears in the future generations of the exposed person as a result of radiation damage to the reproductive cells.

The idea behind simple experiments and demonstrations in the EVS class is to discuss ideas, record, and analyze observations on the basis of questions raised by students.
Through experiments, students can do the practical implementation, and demonstration concepts are shown practically to make students understand in the best possible way.
Hence, the correct answer is, 'To discuss ideas, record and analyze observations on the basis of questions raised by students.'

Undhiya:

• The dish is named Undhiya or upside down, in Gujrati.
• This dish is a regional speciality of Surat.
• A little-known fact is that the name Undhiyu comes from the Gujarati word Undhu, which means being upside down.
• The upside-down is here because the pot in which this food is made is placed upside down.
• In the wintertime to enjoy the undhiya (a kind of stew).
• There are a total of eight vegetables are stirred upside down and cooked over a wood fire in large earthen (clay) pots along with fresh spices to give Undhiyu its distinctive texture and flavour.
• The pot was sealed and kept between hot coals.
• The vegetables are cooked slowly in this special cooker, on the fields.
• Undhiya would be eaten with bajra rotis, freshly cooked on chulha.

Project Tiger is the most popular untamed life preservation task of India, which was started in 1973 to secure the reducing population of Indian tigers.

It is a place where rains take place heavily and frequently, and houses are made on bamboo pillars because bamboo absorbs a large amount of water. It stores water in its horizontal underground stems. Assam is a place that is prone to this problem. As the whole state of Assam is covered with frequent rainfall and no month goes without having rainfall once or twice.
Hence, the correct answer is, 'Assam.'

• A species of dolphin is found in the freshwater of the Ganges and Brahmaputra rivers, locally called Susu.
• The Ganges river dolphin was officially discovered in 1801.
• Ganges river dolphins once lived in the Ganges-Brahmaputra-Meghna and Karnaphuli-Sangu river systems of Nepal, India, and Bangladesh.
• The Ganges river dolphin can only live in freshwater and is essentially blind.
  • Scientific name: Platanista gangetica
  • Class: Mammalia
  • Kingdom: Animalia
  • Family: Platanistidae

This is the correct option because ocean water is not fit for drinking.

Crow is a bird that makes its nest high up on a tree. A group of crows is called a murder. It is a very intelligent bird and is found almost in all parts of the world. It is black. They can also damage the crops.
Hence, the correct answer is "Crow".

Charles Darwin:

• Darwin proposed a theory of evolution called natural selection in the year 1859.
• According to it those populations which are a better fit (reproductively fit) in an environment will be selected by nature and will survive more.
• Darwin's theory of natural selection is popularly known as 'Darwinism'.
• English naturalist Charles Darwin developed the idea of natural selection after a five-year voyage to study plants, animals, and fossils in South America and on islands in the Pacific.
• Darwin conducted a sea voyage in a sailing ship called H.M.S Beagle as a part of his experiments on the theory of evolution.
• Charles Darwin became almost universally thought of as the "Father of Evolution".
• Darwin's process of natural selection has four components:
  • Variation
  • Inheritance
  • High rate of population growth
  • Differential survival and reproduction

Thus, Charles Darwin proposed the theory of biological evolution by natural selection.

Agenda 21 is an extensive arrangement of action to be made universally, broadly and locally by associations of the United Nations System, governments and major groups in each territory in which human affects the Earth.

The 'Khejadi' tree is found in the desert areas of Rajasthan, as it is found in desert areas it does not need much water to grow, it is a shady tree and children like to play in its shade. Hence, (I), (II) and (III) give the best explanation of the Khejadi tree.

Kabaddi:

• Kabaddi is known as chedduguddu in Andhra Pradesh.
• Hu-tu-tu, Choo Kit Kit, Ha-du-du are all other names of Kabaddi.
• Kabaddi is a popular contact sport in Southern Asia that first originated in Ancient India.
• It is played across the country and is the official game in the states of Punjab, Tamil Nadu, Bihar, Telangana, and Maharashtra. 
• In the kabaddi game, each side has 7 players when the game starts.
• There will be 5 substitutes for each side as well.
• The games in Kabaddi are 40 minutes long.
• Each side gets alternating turns to send any one player to the opponent’s side.
• This player is called the raider and each player on the opposing team is called a defender.
• The two teams alternate between raiding and defending for two halves of twenty minutes each (with a five-minute break between halves and newly introduced small timeouts for teams are used to generate advertisement revenue).
• After halftime, the two teams switch sides of the court.
• The Lobby is the area of the court which is considered active only when contact has been made between the raider and a defender.
• Else, it is considered out of bounds for both raider and the defenders.
• The team with the most points at the end of the game wins.

Thus, Chedduguddu is another name for Kabaddi sport.

Agrobiology is the art of plant nourishment and development in connection to soil conditions, particularly to decide approaches to increment crop yields. Agrobiology is for the most part related with: animal health and welfare, plant nutrition and health and organic agriculture.

Tarun Bharat Sangh is a non-governmental association in Rajasthan. It is led by Rajendra Singh. The society and Rajendra Singh are best-known for performing environmental research and land expansion to provide fresh and clean water to people. Tarun Bharat Sangh's focus rests upon access to water by the rejuvenation of water resources, tackling issues like human and wildlife conflicts and combating the mining mafias for the benefit of the local community.
Hence, the correct answer is, 'Rebuilding old lakes.'

Speed: The distance travelled by the body in unit time.
Speed = Distance/Time
Also, Time = Distance/Speed
Average Speed: Since the body does not always have the same speed, So we use the concept of average speed. It is the ratio of total distance covered to total time taken by the body.
AverageSpeed = Total Distance/Total Time

Conversion of units of speed:
From km/hr to m/s = multiply by 5/18
From m/s to km/hr = multiply by 18/5

An EVS teacher should accept and respect perception of children. She must respect and accept the students and their perceptions.

A man having a blood group O will have ii gene If he marries a woman of blood group A having either I^A i gene or I^AI^A gene.
If ii is crossed with I^A i, it will form two types of gametes that are ii and I^A i. It means that their first-born child will have 50% chance of getting O blood group.
Hence, the correct answer is 50%.

According to NCF, the objective of EVS at the primary stage mainly focuses on:

• to train children to locate and comprehend relationships between the natural, social and cultural environment, i.e sensitivity towards the physical and social environment 
• to develop an understanding based on observation and illustration, drawn from living experiences and physical, biological, social, and cultural aspects of life, rather than abstractions
• to create cognitive capacity and resourcefulness to make the child curious about social phenomena, starting with the family and moving on to wider spaces
• to nurture the curiosity and creativity of the child particularly concerning the natural environment (including artifacts and people) i.e exploration;
• to develop an awareness about environmental issues
• to engage the child in exploratory and hands-on activities to acquire basic cognitive and psychomotor skills through observation, classification, inference, etc.

From the above-mentioned objectives, memorizing basic scientific concepts and principles is not an objective of EVS. 

The Silicon Valley of India is a nickname of the Indian city of Bangalore. The name signifies Bangalore as a hub for information technology companies in India. It is a reference to the original Silicon Valley of the San Francisco Bay Area, which is the major hub for information technology companies in the United States.

"Desert Oak" is a type of tree whose roots go deep into the ground till they reach the water. The roots of this tree go to a depth nearly 30 times the height of the tree. This tree is found in dense stands, or forests in Australia. The tree is a slow-growing tree that is found in deep sands. They are considered the oldest trees of 1000 years of age.
Hence, the correct answer is, 'Australia.'

According to Kilpatrick, “A project is a whole-hearted purposeful activity proceeding in a social environment.” Project Method of learning for transacting EVS include:

• It is a powerful way of learning about their environment. The Project method of learning also provides an opportunity for the children to apply and practice what they have learned, thus Projects help link theory with practice.

A, B and D are the correct options because we can write only because of friction between the tip of the pen and the paper. We can walk because of the friction between our feet and the ground. We are able to stop a moving vehicle by applying brakes because of friction.

CCE stands for Continuous and Comprehensive Scheme of Evaluation. It was made compulsory in India by the Right to Education Act, 2009. This includes a wide range of activities that helps to improve teaching and learning activities among the students. Hence, all the aspects like projects, surveys explorations, observations, experimentation, anecdotal records, and portfolio are used. 
Hence, the correct answer is "All of the above".

Every teacher observes his/her students on a day-to-day basis and those observations can be formally recorded to his own understanding or to that of others who will later deal with the students.

• The anecdotal records provide a means for the observation of one’s behavior. A record of events is dependable data that will remain unchanged from the time it is made until the time we want to refer to it.