Practise Botany MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.
Study Botany through multiple-choice questions in Everyday Science. This subtopic contains 333 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these Botany 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.
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میوٹیشن کا نظریہ کس نے دیا تھا؟
Answer: Hugo de Vries
Explanation The Mutation theory was proposed by Hugo de Vries. Hugo Marie de Vries was a botanist from the Netherlands .
چائے کے پتے کے لئے سب سے اہم محرک _____ ہے؟
Answer: Caffeine
Explanation Caffeine occurs naturally in the tea plant, Camellia sinensis, so all brewed tea contains some caffeine. Tea leaves contain 3.5% caffeine, while Coffee beans have 1.1–2.2%.
مندرجہ ذیل میں سے کون ملٹی سیلیولر نہیں ہے؟
Answer: Chlamydomonas
Explanation Chlamydomonas is a unicellular green alga. The Oedogonium, Chara, and Spirogyra are multicellular.
پانی کی مقدار کے ساتھ مٹی میں بہترین پودے جو _____ ہیں؟
Answer: Xerophytes
Explanation Xerophytes are plants adapted to dry environments with low water availability. Examples include cactus and succulents , which have features to store or conserve water.
قدرتی طور پر پائے جانے والے آکسن کس شکل میں ملتے ہیں؟
Answer: Indole-3-acetic acid
Explanation Naturally occurring auxin is primarily found in the form of Indole-3-acetic acid (IAA), It regulates plant growth. It promotes cell elongation. Auxins influence apical dominance. Last updated question 17-02-2026
پیرینوائڈز ______ سے بنا ہوا ہے؟
Answer: Core of starch surrounded by sheath of protein
Explanation Pyrenoids are specialized structures found in chloroplasts of algae and some bryophytes, mainly involved in carbon fixation. They consist of a core of starch surrounded by a protein sheath , aiding in photosynthetic efficiency.
کسی جین کے بنیادی تسلسل میں تبدیلی جو پروٹین کو تبدیل کرتی ہے یا اسے ختم کرتی ہے ______ ہے؟
Answer: Mis-sense mutation
Explanation A mis-sense mutation changes a single nucleotide, leading to a different amino acid in the protein. This alteration can affect protein function, sometimes causing diseases like sickle cell anemia.
ٹماٹر میں پودوں کے پرزوں پر جامنی رنگ کا رنگ کس عنصر کی کمی کی وجہ سے ہے؟
Answer: Phosphorus
Explanation Phosphorus deficiency causes purple or reddish coloration in tomato plants due to anthocyanin pigment accumulation. It also leads to stunted growth and delayed maturity in plants.
بیجوں کے عروقی پودوں میں _____ شامل ہیں؟
Answer: Lycophyta
Explanation Lycophyta includes club mosses, which are seedless vascular plants. They reproduce via spores instead of seeds.
مندرجہ ذیل میں سے کون سا کلیدی عنصر ہے جو ختم ہونے والے بھنور کو چلاتا ہے؟
Answer: Loss of genetic variations
Explanation Loss of genetic variation reduces a population's ability to adapt to environmental changes, increasing vulnerability. This reduction in diversity can lead to inbreeding, which further accelerates the extinction vortex.
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