Quinary service:
New ideas are generated, new technologies are evolved, new policies are implemented by selected individual experts. Their decisions influence nations, international institutions, etc., i.e., Inventors.

An enterprise is said to be a public enterprice where it is owned, managed and controlled by Government or any of its agencies or both.

i) Boats like 'Padagu, Thimil, Thoni, Ambu, Odampunai' were used for domestic trade.
ii) Boats like 'kalam, Marakalam, Vangam,Navai' were used for foreign trade.

Employment refers to the occupation in which people work for others and get remuneration in the form of wages or salaries.

Cooperative credit societies are societies formed for providing short-term financial help to their members. Agriculturists, artisans, industrial workers, salaried employees, etc., form these credit societies.

(i) Economic activities are undertaken to earn money.
(ii) Generally, people engage themselves in such activities on a regular basis and are said to be engaged in their occupation.
(iii) Occupations may be classified into three categories based on the following:
(1) Employment
(2) Profession
(3) Business
(1) Employment:
(a) It refers to the occupation in which people work for others and get remuneration in the form of wages or salaries.
(b) The one who is employed by others are called employees and the one who employs others is called employer.
(c) Managers, Clerks, Bank officials, Factory workers etc., are examples of employees.
(2) Profession:
(a) Professions are those occupations which involve rendering of personal services of a special and expert nature.
(b) A profession is something which is more than a job. It is a career for someone who is competent in their respective areas.
(c) It includes professional activities which are subject to guidelines or codes of conduct laid down by professional bodies.
(d) Those engaged in a profession are called professionals and. they earn income by charging professional fee.
(3) Business :
Business refers to any human activity undertaken on a regular basis with the object to earn profit through production, distribution, purchase and sale of goods and services.

The barter system envisages mutual exchange of one's goods to other without the intervention of money as a medium of exchange. It imposes certain constraints in the smooth flow of trade as explained below.
Lack of Double Coincidence of Wants:
Unless two persons who have surplus have the demand for the goods possessed by each other, barter could not materialize. For instance 'A' is having a surplus of groundnut and 'B' is possessing rice in surplus. In this case A should be in need of rice possessed by B as the latter should desperately need groundnut possessed by A. If this "coincidence of wants" does not exist, Barter cannot take place.
Non - Existence of Common Measure of Value:
Barter system could not determine the value of commodities to be exchanged as they lacked commonly acceptable measures to evaluate each and every commodity. It was difficult to compare the values of all articles in the absence of an acceptable medium of exchange.
Lack of Direct Contact between Producer and Consumers:
It was not possible for buyers and sellers to meet face to face in many contexts for exchanging the commodities for commodities. This hindered the process of barter in all practical sense.
Lack of Surplus Stock:
Absence of surplus stock was one of the impediments in barter system. If the buyers and sellers do not have surplus then no barter was possible.

Government company form of organisation is suitable in the following circumstances:
(i) When the government wants to take over an existing enterprise in an emergency.
(ii) When the State wants to establish an undertaking in collaboration with private enterprises or with foreign countries.
(iii) When there is a need for flexibility in the operations of the enterprises.
(iv) When the government wishes to start the enterprises with a view of transferring it to private management later.

Economic activities on the basis of size:
On the basis of size, business activities may be broadly grouped into two categories.
(a) Small-scale:
Small-scale units require less capital. They employ small number of workers and produce the goods on small scale.
Examples:
(i) Manufacturing textiles in handlooms or power looms.
(ii) Extraction of edible oil from seeds like groundnut, sesame, through "traditional wooden churner.
(b) Large scale:
Large-scale units require huge capital. They employ large number of workers and produce the goods on large scale.
Examples:
(i) Manufacturing Textiles in a large Textile mill. Example. Raymonds, Ramraj Cotton.
(ii) Extraction of edible oil from oilseeds in oil mills. Example. Suffola, Sunflower.

According to Mitakshara law, only the male members in the family get the right of inheritance by birth. It is applied throughout India except Assam and West Bengal.

There are 4 organisations that come under public sector. They are
i. Departmental organisations
ii. Public organisations
iii. Government companies
iv. board organisations

Human objectives refer to the objectives aimed at the well-being as well as fulfillment of expectations of employees as also of people who are disabled, handicapped and deprived of proper education and training. The human objectives of business may thus include economic well-being of the employees, social and psychological satisfaction of employees and development of human resources.