Botany MCQs - Everyday Science Practice | PakExamPoint
Practise Botany MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.
Botany MCQs and revision practice
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.
B. Study or practice of growing flowers, fruits, vegetables, and gardening
C. Science of flowers
D. Science of agriculture
Check answer and explanation
Answer: Study or practice of growing flowers, fruits, vegetables, and gardening
Explanation Horticulture deals with the cultivation, management, and study of fruits, vegetables, flowers, and ornamental plants. It is a branch of agriculture that focuses on improving plant growth, yield, and quality.
Explanation Epiphytes grow on other plants. They are not parasitic. They obtain nutrients from air and rain. Common in tropical forests. Orchids are common epiphytes.
مندرجہ ذیل میں سے کون سا نائٹروجن فکسنگ انزائم ہے؟
A. Arginase
B. Urease
C. None of these
D. Nitrate reductase
Check answer and explanation
Answer: Nitrate reductase
Explanation Nitrate reductase is an enzyme involved in the nitrogen cycle that reduces nitrate (NO₃⁻) to nitrite (NO₂⁻) , a crucial step in nitrogen assimilation in plants. It plays a key role in converting inorganic nitrogen into forms usable by plants for amino acid and protein synthesis.
اعلی جمناسپرس کو مستحکم _____ میں ٹیریڈوفائیٹس سے مختلف ہے؟
A. Re-growth
B. Secondary growth
C. Primary growth
D. None of these
Check answer and explanation
Answer: Secondary growth
Explanation Higher gymnosperms possess a vascular cambium that produces secondary xylem and phloem , resulting in well-defined secondary growth (wood formation). Pteridophytes lack this vascular cambium and therefore do not exhibit secondary growth.
Explanation Chlorophyll a primarily absorbs light in the blue-violet and red regions of the visible light spectrum, with peak absorption around 430–470 nanometers (nm and 660–670 nm, respectively. The molecule shows poor absorption in the green region, which is why plants typically appear green.
Explanation Drosera (Sundew) is an insectivorous plant that traps insects using its sticky glandular hairs. Hydrilla and Ranunculus are aquatic plants but not insectivorous.
Explanation Lichens are a combination of fungus and algae or cyanobacteria . Both organisms benefit from each other, forming a symbiotic relationship . Fungus provides structure and protection; algae/cyanobacteria perform photosynthesis. Last verified on 04-02-2026
کون سی فصل کاشت اور کٹائی کے درمیان سب سے زیادہ وقت لیتی ہے؟
A. Cotton
B. Rice
C. Sugarcane
D. Wheat
Check answer and explanation
Answer: Sugarcane
Explanation Sugarcane generally has the longest cultivation-to-harvest period, taking 10 to 18 months (or even longer in some regions) to mature Cotton : Around 5–6 months (a single growing season). Rice: About 3–6 months (single season). Wheat: Completes life cycle in one season (shorter than cotton/sugarcane).
Explanation Capitulum is the characteristic inflorescence of the family Compositae (Asteraceae) , seen in sunflowers and daisies. It consists of a dense cluster of small florets arranged on a common receptacle.
Explanation Environmental factors , such as climate, soil, and living organisms , influence ecosystems and are termed ecological factors . These factors include abiotic (non-living) and biotic (living) components that affect the survival and growth of organisms.
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