The concept of developmental task was proposed by

• Hollingworth

• Jean Piaget

• Havighurst

• Hall

A child when scolded in class by a teacher returns home and shows anger to his/her sister is an example of

• Displacement

• Sublimation

• Conversion

• Reaction formation

Ego' is guided by

• Pleasure principle

• Reality principle

• Idealistic principle

• General principle

Central nervous system consists of ......................

• all organs

• brain

• spinal cord

• brain and spinal cord

Cholecystokinin is a hormone, which when injected in human body.

• Increases appetite

• Increases appetite and thirst

• Decreases appetite

• Decreases appetite and thirst

The unique interaction of ................ and ................ can result in different paths and outcomes of development.

• heredity, environment

• challenges, limitations

• stability, change

• exploration, nutrition

Their term 'eros' is related to.

• Life Instinct

• Death Instinct

• Fear Instinct

• Natural Instinct

Which factor influences the colour of eye?

• Environment

• Heredity

• Hormones

• Society