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.
حیاتیاتی تنوع کی بنیادی اکائی کون سی ہے جس کے بغیر کوئی ارتقائی تبدیلی واقع نہیں ہوتی؟
A. Species
B. Population
C. Gene
D. None of these
Check answer and explanation
Answer: Gene
Explanation Genes are the fundamental units of biodiversity as they carry the hereditary information necessary for variation and adaptation. Without genetic variation , no evolutionary changes or natural selection can occur, which are essential for biodiversity.
ایک جانور جو اپنے رشتہ داروں کے لیے خود کو قربان کرتا ہے ______ کی نمائش کر رہا ہے؟
A. Imprinting
B. Operant conditioning
C. Kin selection
D. None of these
Check answer and explanation
Answer: Kin selection
Explanation Kin selection is a behavior where an animal sacrifices itself to benefit its relatives, ensuring the survival of shared genetic material. This evolutionary strategy increases the reproductive success of closely related individuals.
Explanation Mature sperm are stored in the epididymis , where they gain motility and are kept until ejaculation . The epididymis is a coiled tube located at the back of the testes , connecting to the vas deferens .
Explanation Silk is obtained from the cocoons of silkworms (Bombyx mori) during the process of sericulture . The larvae spin silk fibers to form cocoons , which are later processed to extract silk threads.
Explanation Anhydrobiosis is a survival mechanism where an organism tolerates extreme dehydration by entering a dormant state. This adaptation is observed in certain species like tardigrades and brine shrimp.
Explanation Homeothermic animals maintain a constant body temperature ( warm-blooded ). Kangaroos are mammals and hence homeothermic. While salamanders and sea horses are cold-blooded.
Explanation Carp fishes belong to the Cyprinidae family. It includes freshwater species like common carp and grass carp. This family is widely distributed and important for aquaculture.
Explanation The wings of birds and flying lizards are examples of convergent evolution, where different species evolve similar traits independently, often due to similar environmental pressures.
قدرتی انتخاب ایلیل فریکوئنسیوں کو تبدیل کرتا ہے کیونکہ کچھ ______ زندہ رہتے ہیں اور دوسروں کے مقابلے میں زیادہ کامیابی سے دوبارہ پیدا ہوتے ہیں۔
A. Individuals
B. None of these
C. Alleles
D. Gene pools
Check answer and explanation
Answer: Individuals
Explanation Natural selection acts on individuals with favorable traits, enabling them to survive and reproduce more successfully. This leads to changes in allele frequencies in the population over time.
کشیراتی گونڈس میں جراثیم کے خلیات ____ کے ذریعہ تیار کیے جاتے ہیں؟
A. None of these
B. To synthesis DNA
C. To synthesis RNA
D. To Synthesis ATP
Check answer and explanation
Answer: To synthesis DNA
Explanation Germ cells undergo DNA replication during meiosis to produce haploid gametes (sperm and egg cells) in vertebrate gonads. RNA and ATP synthesis are important for cellular function.
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