LGS Mixed Practice Test #459

Question 1

The functional unit of the nervous system is:‌​‍

Accepted Answer

Neuron — Neuron (nerve cell) is the basic unit of the nervous system.‌​‍

Answer

Nephron

Answer

Hepatocyte

Answer

Alveolus

Question 2

Liquid metal at room temp:‌​‍

Accepted Answer

Mercury — Mercury (Hg).‌​‍

Answer

Gold

Answer

Silver

Answer

Tin

Question 3

Rust is:‌​‍

Accepted Answer

Iron oxide — Fe₂O₃·xH₂O — hydrated iron(III) oxide.‌​‍

Answer

Iron carbonate

Answer

Iron sulphide

Answer

Iron chloride

Question 4

Kohlberg's moral development stages:‌​‍

Accepted Answer

Preconventional, Conventional, Postconventional (3 levels, 6 stages) — Based on Heinz dilemma. ‌​‍Criticised by Carol Gilligan for gender bias (ethics of care in women).

Answer

5

Answer

Only 2

Answer

Only preconventional

Question 5

Penicillin was discovered in:‌​‍

Accepted Answer

1928 — Alexander Fleming discovered Penicillin in 1928. Nobel Prize 1945.‌​‍

Answer

1920

Answer

1935

Answer

1945

Question 6

Dengue fever is transmitted by:‌​‍

Accepted Answer

Mosquito — Dengue is transmitted by the Aedes mosquito (Aedes aegypti). ‌​‍It bites mainly during daytime, especially early morning and late afternoon.

Answer

Rat

Answer

Cockroach

Answer

Housefly

Question 7

Hindi Divas is celebrated on:‌​‍

Accepted Answer

14 September — 14 September = Hindi Divas. ‌​‍On this day in 1949, Hindi was adopted as an official language.

Answer

26 January

Answer

15 August

Answer

2 October

Question 8

A teacher notices that a 13-year-old student, previously quiet and compliant, has become argumentative in class discussions, questioning authority, and showing increased concern for fairness and social justice among peers. This noticeable change in the student's behavior, reflecting a move towards more independent thinking, critical evaluation of rules, and a growing sense of morality, primarily indicates development in which two interconnected domains?

Accepted Answer

B. Cognitive and moral development — The ability to critically evaluate rules, question authority, and engage in discussions about fairness and social justice are strong indicators of advancing cognitive development (e.g., formal operational thought) and moral reasoning (e.g., moving beyond conventional stages where rules are simply followed). These two domains are closely interconnected, as higher cognitive abilities enable more complex moral judgments.

Answer

A. Physical and linguistic development

Answer

C. Emotional and psychomotor development

Answer

D. Sensory and perceptual development

Question 9

During a lesson, a student repeatedly interrupts with irrelevant questions. The teacher's best response would be to:

Accepted Answer

A. Politely acknowledge the question and answer it briefly before redirecting to the lesson. — Acknowledging the question briefly and redirecting maintains the student's engagement without disrupting the lesson flow. Telling the student to wait may frustrate them, ignoring could encourage persistence, and assigning writing tasks might not address the immediate interruption while delaying learning.

Answer

B. Tell the student to save questions for the end of class.

Answer

C. Ignore the student entirely to discourage the behavior.

Answer

D. Assign the student to write down all their questions to address later.

Question 10

A patient suddenly experiences a "fight-or-flight" response due to an acute stressor. Which division of the autonomic nervous system is primarily responsible for mediating these physiological changes, such as increased heart rate and dilated pupils?

Accepted Answer

D. Sympathetic nervous system — The sympathetic nervous system is responsible for the body's "fight-or-flight" response, preparing the body for stressful situations by increasing heart rate, dilating pupils, and diverting blood flow. The parasympathetic nervous system promotes "rest and digest" functions. The somatic nervous system controls voluntary muscle movements, and the enteric nervous system regulates the gastrointestinal tract.

Answer

A. Parasympathetic nervous system

Answer

B. Somatic nervous system

Answer

C. Enteric nervous system

LGS Mixed Practice Test #459