Plus 2 Lecturer Mixed Practice Test #653

Question 1

Pollination is:‌​‍

Accepted Answer

Transfer of pollen to stigma — Pollination = transfer of pollen grains from anther to stigma. ‌​‍Done by wind, insects, birds, water.

Answer

Seed dispersal

Answer

Germination of seeds

Answer

Absorption of water

Question 2

P.T. Usha is associated with:‌​‍

Accepted Answer

Athletics — P.T. ‌​‍Usha ('Payyoli Express') is one of India's greatest athletes, famous for track events.

Answer

Cricket

Answer

Badminton

Answer

Hockey

Question 3

Heaviest planet:‌​‍

Accepted Answer

Jupiter — Jupiter.‌​‍

Answer

Saturn

Answer

Earth

Answer

Neptune

Question 4

Heat transfer through empty space (sun to earth) is:‌​‍

Accepted Answer

Radiation — Electromagnetic radiation (especially IR) carries heat through vacuum.‌​‍

Answer

Diffusion

Answer

Convection

Answer

Conduction

Question 5

A student consistently spends extra hours after school working on a science project, experimenting with different variables, purely because they are fascinated by the topic and enjoy the process of discovery, even though it's not graded. This behavior is primarily driven by:

Accepted Answer

C. Intrinsic motivation — Intrinsic motivation arises from internal factors such as enjoyment, interest, and the satisfaction derived from the activity itself. The student's fascination and enjoyment of discovery, independent of grades or recognition, are clear indicators of intrinsic motivation. Extrinsic motivation involves external rewards or pressures.

Answer

A. Extrinsic motivation

Answer

B. Affiliation needs

Answer

D. A desire for external recognition

Question 6

The Frankfurt School (critical theory) was founded in:‌​‍

Accepted Answer

Frankfurt, Germany — Institute for Social Research, Frankfurt (1923). ‌​‍Adorno, Horkheimer, Marcuse, Habermas — critical analysis of modern society.

Answer

Berlin

Answer

Paris

Answer

London

Question 7

A child receives a vaccine against measles. This type of immunity, where the body produces its own antibodies in response to an antigen, is known as:

Accepted Answer

D. Active artificial immunity — Active artificial immunity is acquired through vaccination, where the body is deliberately exposed to an antigen (e.g., weakened or inactivated pathogen) to stimulate its own immune system to produce antibodies and memory cells. Passive immunity involves receiving pre-formed antibodies (e.g., from mother to child or through antitoxin injections), while natural immunity occurs through natural exposure to a pathogen.

Answer

A. Passive natural immunity

Answer

B. Passive artificial immunity

Answer

C. Active natural immunity

Question 8

Reserpine, an indole alkaloid known for its antihypertensive and sedative properties, is primarily obtained from which of the following plant sources?

Accepted Answer

C. Rauwolfia serpentina — Reserpine is a key alkaloid isolated from the roots of Rauwolfia serpentina, commonly known as Sarpagandha. Cinchona yields quinine, Papaver somniferum yields opium alkaloids like morphine, and Strychnos nux-vomica yields strychnine and brucine.

Answer

A. Cinchona succirubra

Answer

B. Papaver somniferum

Answer

D. Strychnos nux-vomica

Question 9

Constantinople was founded by:‌​‍

Accepted Answer

Constantine (330 CE) — Emperor Constantine the Great founded Constantinople on site of old Byzantium (330 CE). ‌​‍Capital of Eastern Roman Empire. Fell to Ottomans 1453.

Answer

Hadrian

Answer

Justinian

Answer

Nero

Question 10

Which spice is Kerala most famous for globally?‌​‍

Accepted Answer

Black Pepper — Kerala is known as the 'Land of Spices' and is particularly famous for Black Pepper, historically traded worldwide.‌​‍

Answer

Cinnamon

Answer

Turmeric

Answer

Cardamom

Plus 2 Lecturer Mixed Practice Test #653