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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جینیاتی انجینئرنگ کے ذریعہ متعارف کروائے گئے غیر ملکی جینوں کا اظہار کرنے والے پودے ______ ہیں؟
Answer: Transgenes
Explanation Transgenic plants contain foreign genes inserted through genetic engineering. These genes provide desirable traits like pest resistance or improved nutrition.
Answer: Glycoprotein
Explanation Cell membrane contains phospholipids, proteins, and glycoproteins. Glycoproteins form a sticky outer layer (glycocalyx). This layer slows the movement of molecules across the membrane. Glycolipids also reduce diffusion slightly, but less than glycoproteins. Glycerol does not affect cell diffusibility significantly. Last updated question 17-02-2026
مییوسس کی اصطلاح ______ کے ذریعہ تیار کی گئی تھی؟
Answer: Farmer
Explanation The term meiosis was coined by J.B. Farmer and J.E.S. Moore in 1905 . Meiosis is a type of cell division that reduces chromosome numbers by half . It producing gametes in animals and spores in plants .
Answer: PGA (3-phosphoglycerate)
Explanation During phase 1 of this cycle, the CO2 molecule is incorporated into one of two 3-phosphoglycerate molecules (3-PGA). This process requires the enzyme RuBisCO and both ATP and NADPH. Once 3-PGA is formed, one of two molecules formed continues into the reduction phase (phase 2).
احکامات کے لئے آخری لاحقہ ______ ہے؟
Answer: -ales
Explanation In botanical nomenclature , orders are designated with the suffix " -ales " to standardize classification. This convention helps distinguish orders from other taxonomic ranks such as families (-aceae) and classes (-opsida).
گندم کی کالی زنگ آلودگی ______ کی وجہ سے ہے؟
Answer: Puccinia
Explanation Puccinia graminis is a fungal pathogen that causes black rust (stem rust) in wheat. This leading to significant crop damage. It spreads through windborne spores and thrives in warm, humid conditions.
انزائم ریورس ٹرانسکرپٹیس کا فنکشن ______ ہے؟
Answer: Synthesis of cDNA from mRNA
Explanation The function of the enzyme reverse transcriptase is synthesis of cDNA from mRNA. This process is crucial in retroviruses like HIV and in molecular biology techniques like RT-PCR.
کسی درخت کی عمر کا تعین اس کے ______ کے ذریعہ کیا جاتا ہے؟
Answer: Rings (Number of Annual rings)
Explanation The age of a tree is determined by counting its growth rings (annual rings) in the trunk . Each ring typically represents one year of growth .
نمکینی کے آغاز کے بعد ، ایک پلانٹ کو ابتدائی طور پر ______ کا سامنا کرنا پڑتا ہے؟
Answer: Osmotic stress
Explanation Initially, salinity causes osmotic stress , making it difficult for plants to absorb water. This stress can later lead to nutrient imbalances and ion toxicity.
مندرجہ ذیل میں سے کون سا تیزی سے بڑھنے والا درخت ہے۔
Answer: Eucalyptus
Explanation Most eucalyptus trees grow much faster than other trees Some eucalyptus species can grow 6 to 12 feet per year. Eucalyptus trees thrive in warm climates with sufficient water and sunlight. Eucalyptus trees are widely cultivated for their timber, essential oils, and ornamental value.
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