Zoology MCQs - Everyday Science Practice | PakExamPoint

Practise Zoology MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.

Zoology MCQs and revision practice

Study Zoology through multiple-choice questions in Everyday Science. This subtopic contains 1568 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.

Use these Zoology MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.

Continue your revision with related topics: 100 Most Repeated MCQs of EDS PDF MCQs, Alloy MCQs, Atmosphere MCQs, Basics of Every Day Science EDS MCQs, Biology MCQs, Botany MCQs, Branch of Science MCQs, Cell MCQs.

Return to all Everyday Science topics to choose your next area of study. Read the MCQ study guide to plan your revision, or try a Everyday Science practice quiz.

Zoology: questions and answer review

Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.

11. In animals, the digestive system develops from which germ layer?

Check answer and explanation

Answer: Endoderm

Explanation In animals, the digestive system develops primarily from the endoderm germ layer. This innermost layer forms the lining of the gastrointestinal tract and also contributes to the development of other related organs.

12. Total Adult life span of male honey bee ranges from ______?

نر شہد کی مکھی کی بالغ عمر کا دورانیہ ______ سے ہے؟

Check answer and explanation

Answer: 7-8 Week

Explanation The total adult lifespan of a male honey bee (drone) ranges from about 7 to 8 weeks. Drones die shortly after mating with the queen. Their primary role is reproduction .

13. Animals use nitrogen in the form of _____?

جانور _____ کی شکل میں نائٹروجن کا استعمال کرتے ہیں؟

Check answer and explanation

Answer: Proteins

Explanation Animals cannot use atmospheric nitrogen directly; they obtain nitrogen by consuming proteins in food. These proteins are broken down into amino acids, which are used for growth and repair of body tissues.

14. Which phylum developed the first true coelom?

Check answer and explanation

Answer: Annelida

Explanation The phylum that developed the first true coelom i s Annelida. A true coelom is a fluid-filled body cavity completely lined by mesoderm, Annelida (segmented worms) are considered the first phylum to have evolved this feature.

15. Reflex action in the body is controlled by ______?

جسم میں اضطراری عمل کو ______ کے ذریعے کنٹرول کیا جاتا ہے؟

Check answer and explanation

Answer: Spinal cord

Explanation The central nervous system (CNS) controls reflex actions. Reflex actions are quick, involuntary responses to a stimulus that don't require prior thought. Examples of reflex actions include blinking and the withdrawal of a body part from a hot object.

16. Queen honeybee is adapted for __________?

ملکہ شہد کی مکھی کو _________ کے لیے ڈھال لیا گیا ہے؟

Check answer and explanation

Answer: Laying eggs

Explanation The queen honeybee's primary role is reproduction; she lays thousands of eggs to sustain the colony. Her physiology, including a larger abdomen, is adapted to support continuous egg production.

17. The following is thought to participate in the regulation of animal cell behavior by communicating information from the outside to the inside of the cell?

مندرجہ ذیل کو سیل کے اندر سے باہر سے معلومات پہنچا کر جانوروں کے خلیے کے رویے کے ضابطے میں حصہ لینے کے بارے میں سوچا جاتا ہے؟

Check answer and explanation

Answer: Integrins

Explanation Integrins are transmembrane proteins that mediate cell adhesion to the extracellular matrix and transmit signals into the cell. They regulate cell behavior by influencing processes like growth, movement, and survival.

18. Incubation period of chicken egg is ______?

چکن انڈے کی انکیوبیشن کی مدت ______ ہے؟

Check answer and explanation

Answer: 21 days

Explanation The standard incubation period for a chicken egg is 21 days under optimal temperature and humidity. Hatching usually begins on day 21 if properly incubated.

19. Most of anesthetics produce unconsciousness by stimulating GABA, this action is facilitated by an increase in ________ ions.

زیادہ تر اینستھیٹیککس جی اے بی اے کی حوصلہ افزائی کرکے بے ہوشی پیدا کرتے ہیں ، اس عمل کو ________ آئنوں میں اضافے سے سہولت فراہم کی جاتی ہے۔

Check answer and explanation

Answer: Cl–

Explanation Most anesthetics enhance the action of GABA (an inhibitory neurotransmitter) by increasing Cl⁻ ion influx into neurons. This hyperpolarizes the neuron , making it less excitable and leading to unconsciousness.

20. One way of cleaning up the environment after an oil spill is through the use of ______?

تیل کے پھیلنے کے بعد ماحول کو صاف کرنے کا ایک طریقہ ______ کے استعمال سے ہوتا ہے؟

Check answer and explanation

Answer: Bacteria

Explanation Certain bacteria , like Pseudomonas and Alcanivorax , break down oil into harmless substances. This process, called bioremediation , helps clean up oil spills naturally.

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