SPSC 25 years Past Papers 2001 to 2025

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SPSC 25 years Past Papers 2001 to 2025

Q601: The Father of Modern Embryology is _____?

جدید برانولوجی کا باپ _____ ہے؟

E. Haeckel

F. Balfour

K.E. Von Baer

None of these

Explanation

Francis Balfour is considered the Father of Modern Embryology.

Due to his contributions to the study of vertebrate development.

He significantly advanced knowledge of embryonic development and comparative embryology.

Q602: Epidermal gills are present in _____?

ایپیڈرمل گلیں _____ میں موجود ہیں؟

Tailed amphibians

Adult amphibians

Adult fishes

None of these

Explanation

Epidermal gills are found in the larval stages of tailed amphibians (such as salamanders and newts).

These gills help in respiration before the development of lungs.

Q603: The bacteria that cause Rocky Mountain spotted fever are transmitted by _____?

وہ بیکٹیریا جو راکی پہاڑ پر داغدار بخار کا سبب بنتے ہیں _____ کے ذریعہ منتقل ہوتے ہیں؟

Ticks

Mites

Mosquitoes

None of these

Explanation

Rocky Mountain spotted fever is caused by Rickettsia rickettsii.

It is primarily transmitted by ticks (e.g., Dermacentor species).

Q604: In Sycon the radial canal is mainly lined by ______?

سائکون میں ریڈیل نہر بنیادی طور پر ______ کے ذریعہ کھڑی ہے؟

Porocytes

Choanocyte

Both A and B

None of these

Explanation

Choanocytes (collar cells) line the radial canals in Sycon.

It help in water circulation and food capture.

Porocytes are tubular cells that regulate water entry.

Q605: Single large opening at the top of spongocoel is called _____?

اسپونگوکوئیل کے اوپری حصے میں واحد بڑی افتتاحی _____ کہلاتی ہے؟

Osculum

Ostium

Mouth

None of these

Explanation

The osculum is the large opening at the top of the spongocoel in sponges, through which water exits.

It plays a key role in the water filtration system of sponges.

Q606: One word substitution: A person who deliberately fire to a building?

Arsonist

Physiologist

Scientist

None of these

Explanation

An arsonist is someone who intentionally sets fire to buildings, vehicles, or other property.

Arson is a criminal act.

It is punishable by law.

Q607: What is the imitation of natural sounds in word form?

Hyperboles

Alliteration

Onomatopoeia

None of these

Explanation

Onomatopoeia refers to words that imitate natural sounds, like buzz, hiss, roar, and splash.

These words mimic the actual sounds they represent in real life.

Q608: Which of the following is pairs, is not correctly matched?

مندرجہ ذیل میں سے کون سا جوڑا ہے ، صحیح طور پر مماثل نہیں ہے؟

Abscisic add-Stomatal closure

IAA-Cell wall elongation

Gibberellic acid-Leaf fall

None of these

Explanation

Gibberellic acid promotes stem elongation, seed germination, and flowering rather than leaf fall.

Leaf fall (abscission) is mainly regulated by abscisic acid (ABA) and ethylene.

Q609: Which of the following organization was established in November 1945?

نومبر 1945 میں مندرجہ ذیل میں سے کون سی تنظیم قائم کی گئی تھی؟

NATO

WHO

UNESCO

ILO

Explanation

United Nations Educational Scientific and Cultural Organization (UNESCO)

Founded

16 November 1945

Headquarters

Paris, France

Founded in

London, UK

Members

193

Q610: Which of the following is an insectivorous plant?

مندرجہ ذیل میں سے کون سا کیڑے دار پلانٹ ہے؟

Ranunculus

Hydrilla

Drosera

None of these

Explanation

Drosera (Sundew) is an insectivorous plant that traps insects using its sticky glandular hairs.

Hydrilla and Ranunculus are aquatic plants but not insectivorous.

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