LGS Mixed Practice Test #38

Question 1

Considering the distinct physiographic divisions of Kerala, which of the following environmental challenges is most predominantly associated with the 'Lowland' region?

Accepted Answer

C. Saline water intrusion, coastal erosion, and vulnerability to sea-level rise. — The lowland region of Kerala, being a narrow coastal strip, is particularly vulnerable to saline water intrusion into its aquifers and estuaries, coastal erosion due to wave action, and the impacts of global sea-level rise. These challenges directly stem from its low elevation and proximity to the Arabian Sea. Options A, B (deforestation), and D are more characteristic environmental concerns of the highland or midland regions.

Answer

A. Soil erosion and landslides due to steep slopes and heavy rainfall.

Answer

B. Water scarcity during dry seasons and deforestation due to extensive logging.

Answer

D. Human-wildlife conflict and the degradation of forest ecosystems.

Question 2

Which of the four primary tissue types is characterized by tightly packed cells forming continuous sheets that cover body surfaces, line internal organs, and form glands, providing protection and regulating passage of substances?

Accepted Answer

D. Epithelial tissue — Epithelial tissue is composed of closely aggregated cells with very little extracellular matrix, forming coverings, linings, and glandular structures. Its main functions include protection, secretion, absorption, and filtration. Connective tissue provides support, muscle tissue enables movement, and nervous tissue transmits signals.

Answer

A. Connective tissue

Answer

B. Muscle tissue

Answer

C. Nervous tissue

Question 3

A teacher wants to continuously assess her students' problem-solving skills and critical thinking during a project-based learning activity. Which of the following tools would be most effective for this purpose?

Accepted Answer

C. An observation schedule and a rubric for evaluating project work and presentations. — An observation schedule coupled with a rubric allows for continuous assessment of process skills like problem-solving and critical thinking as students engage in project work and presentations. Standardized tests, final examinations, and surprise quizzes are more suited for measuring content knowledge at specific points rather than ongoing process-oriented skills.

Answer

A. A standardized multiple-choice test at the end of the unit.

Answer

B. A traditional pen-and-paper final examination.

Answer

D. A surprise quiz covering theoretical concepts.

Question 4

Kerala has ___ Assembly constituencies:‌​‍

Accepted Answer

140 — Kerala Legislative Assembly has 140 seats.‌​‍

Answer

130

Answer

120

Answer

150

Question 5

IP version 4 address format:

Accepted Answer

32-bit, 4 octets — ~4.3 billion addresses. IPv6: 128-bit (2^128 addresses). IPv4 exhaustion led to IPv6 adoption. Dual-stack transition.

Answer

64-bit

Answer

128-bit

Answer

8-bit

Question 6

Which part of the nephron is primarily responsible for the reabsorption of water and concentration of urine?

Accepted Answer

B. Loop of Henle — The Loop of Henle plays a key role in the countercurrent multiplier system, facilitating water reabsorption and urine concentration. The proximal tubule reabsorbs most solutes, while the distal tubule and collecting duct fine-tune reabsorption under hormonal control.

Answer

A. Proximal convoluted tubule

Answer

C. Distal convoluted tubule

Answer

D. Collecting duct

Question 7

Which of the following structures prevents food from entering the trachea during swallowing?

Accepted Answer

C. Epiglottis — The epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, which folds over the glottis (opening of the trachea) during swallowing to prevent food and liquid from entering the airways. The pharynx is a common passageway, the larynx contains the vocal cords, and the uvula is involved in soft palate movements and speech.

Answer

A. Pharynx

Answer

B. Larynx

Answer

D. Uvula

Question 8

A 14-year-old girl frequently experiences intense mood swings, from extreme happiness to deep sadness, and often feels misunderstood by her parents, believing 'no one gets what I'm going through.' This emotional intensity and sense of uniqueness are primarily linked to:

Accepted Answer

B. The rapid development of the limbic system in the brain — The limbic system, responsible for emotions and memory, develops more rapidly during adolescence than the prefrontal cortex, which handles impulse control and reasoning. This developmental imbalance often contributes to heightened emotional reactivity and difficulty in regulating strong feelings, leading to experiences like intense mood swings and feelings of being misunderstood.

Answer

A. Early childhood attachment issues resurfacing

Answer

C. A lack of effective communication skills training

Answer

D. Over-reliance on social media for validation

Question 9

One who studies the stars and planets:‌​‍

Accepted Answer

Astronomer — Astronomy is scientific study of celestial objects.‌​‍

Answer

Biologist

Answer

Geologist

Answer

Astrologer

Question 10

How many rivers does Kerala have?‌​‍

Accepted Answer

44 — Kerala has 44 rivers — 41 flowing west into the Arabian Sea, 3 flowing east.‌​‍

Answer

34

Answer

38

Answer

50

LGS Mixed Practice Test #38