LGS Mixed Practice Test #641

Question 1

The plant hormone that promotes fruit ripening is:

Accepted Answer

Ethylene — Ethylene is a gaseous plant hormone that triggers ripening.

Answer

Auxin

Answer

Cytokinin

Answer

Gibberellin

Question 2

Following an initial discussion, a science teacher provides students with various materials such as ice cubes, a hot plate, and thermometers. Students are then instructed to work in groups to observe and record the temperature changes as ice melts and water boils, documenting their findings. This activity exemplifies which phase of the 5E learning model?

Accepted Answer

C. Explore — The Explore phase is characterized by students actively investigating phenomena, collecting data, and engaging in hands-on experiences to build direct understanding. The activity described, where students conduct an experiment and record observations, directly aligns with the investigative and experiential nature of the Explore phase, allowing them to gather evidence before formal explanations.

Answer

A. Engage

Answer

B. Explain

Answer

D. Evaluate

Question 3

Highest peak in world:

Accepted Answer

Everest — Mount Everest (8,849 m).

Answer

K2

Answer

Kanchenjunga

Answer

Annapurna

Question 4

The largest producer of rubber in India is:

Accepted Answer

Kerala — Kerala produces ~70% of India's natural rubber; Kottayam is the hub.

Answer

Tamil Nadu

Answer

Karnataka

Answer

Tripura

Question 5

The six categories of Fundamental Rights are: Equality, Freedom, Against Exploitation, Freedom of Religion, Cultural/Educational, and:‌​‍

Accepted Answer

Constitutional Remedies — Right to Constitutional Remedies (Article 32) — called 'heart and soul' of Constitution by Ambedkar. ‌​‍Right to Property was a Fundamental Right until 1978.

Answer

Privacy

Answer

Property

Answer

Life

Question 6

Which agency is primarily responsible for the conduct of Teacher Eligibility Test (TET) in Kerala?

Accepted Answer

A. Kerala State Council of Educational Research and Training (KSCERT) — KSCERT conducts the Teacher Eligibility Test (TET) in Kerala as per the mandate of the National Council for Teacher Education (NCTE). The Department of General Education is the administrative authority, while KPSC conducts recruitment exams. NCERT is a national-level body and not involved in state-level TET.

Answer

B. Department of General Education, Government of Kerala

Answer

C. Kerala Public Service Commission (KPSC)

Answer

D. National Council of Educational Research and Training (NCERT)

Question 7

Nephron parts:

Accepted Answer

Glomerulus + tubule — Bowman's capsule + glomerulus + tubule system.

Answer

Alveolus + bronchi

Answer

Neuron + axon

Answer

Hepatocyte + duct

Question 8

The organ responsible for the production of bile, detoxification of metabolic waste, and synthesis of various plasma proteins is the:

Accepted Answer

C. Liver — The liver is a vital organ performing numerous metabolic functions including bile production for fat digestion, detoxification of harmful substances, and synthesis of essential plasma proteins. The pancreas produces digestive enzymes and hormones, the gallbladder stores bile, and the spleen filters blood and is involved in immune responses.

Answer

A. Spleen

Answer

B. Pancreas

Answer

D. Gallbladder

Question 9

Crossing over occurs in:

Accepted Answer

Prophase I of meiosis (pachytene) — Exchange of segments between homologous chromosomes at chiasmata. Source of genetic variation.

Answer

Anaphase

Answer

Metaphase II

Answer

Mitosis

Question 10

Efficiency of a real transformer is typically:‌​‍

Accepted Answer

95-99% — Modern power transformers achieve 95-99% efficiency; losses = copper + iron (core) losses.‌​‍

Answer

50%

Answer

100% always

Answer

75%

LGS Mixed Practice Test #641