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.
Explanation The primary lymphoid organs in teleost fishes are th e thymus and the anterior kidney (or pronephros). In fish, the kidney acts as a major hematopoietic organ. The thymus helps in T-cell development. These organs support immunity. Fish lack bone marrow like mammals.
Explanation A flower is a modified shoot specialized for reproduction. Floral parts (sepals, petals, stamens, carpels) are modified leaves attached to the shoot apex.
Explanation Moisture is essential to activate enzymes and initiate metabolic processes in the seed. Oxygen is required for respiration, and a suitable temperature ensures proper enzymatic activity for growth.
زمین کی تزئین کا ماہر عام طور پر کس بنیادی علاقے پر کام کرتا ہے؟
A. Wood
B. Glass
C. Iron
D. Gardens and outdoor places
Check answer and explanation
Answer: Gardens and outdoor places
Explanation A landscaper's work encompasses creating and maintaining outdoor spaces, Including gardens and other outdoor areas, using materials l ike wood and iron.
فوٹو ریسپریشن زیادہ تر کس قسم کے پودوں میں دیکھی جاتی ہے؟
A. None of these
B. C3 plants
C. C4 plants
D. CAM plants
Check answer and explanation
Answer: C3 plants
Explanation Photorespiration is a process where Rubisco enzyme reacts with O₂ instead of CO₂, reducing photosynthetic efficiency. It occurs mainly in C3 plants like wheat, rice, and soybean . Leads to loss of energy and fixed carbon in plants. More common in hot and dry conditions. Last verified on 12-02-2026
Explanation In angiosperms (flowering plants), the endosperm is a triploid (3n) tissue that provides nourishment to the developing embryo. It is formed during double fertilization, where one sperm nucleus fuses with the egg cell to form the zygote, and another sperm nucleus fuses with two polar nuclei in the embryo sac to create the triploid endosperm. This triploid nature is a key characteristic of angiosperms and distinguishes them from gymnosperms, where the endosperm is haploid.
کروموسوم ______ پر مییوسس سیل ڈویژن میں نصف تک کم ہوجاتے ہیں؟
A. Anaphase I
B. None of these
C. Telophase I
D. Metaphase
Check answer and explanation
Answer: Anaphase I
Explanation During Anaphase I of meiosis, homologous chromosomes separate, reducing the chromosome number by half. This ensures that each gamete receives only one chromosome from each homologous pair.
وہ پودے جو کم پانی والے حالات میں زندہ رہ سکتے ہیں، انہیں کیا کہا جاتا ہے؟
A. Hydrophytes
B. Mesophytes
C. None of these
D. Xerophytes
Check answer and explanation
Answer: Xerophytes
Explanation Xerophytes are plants adapted to survive in dry or low-water environments . They have special features to reduce water loss and store water . Additional information : Examples of xerophytes : Cactus Aloe vera Date palm Acacia Euphorbia Last verified on 19-01-2026
علامات کی ظاہری شکل سے پہلے جینیاتی حالت کی تشخیص ______ ہے؟
A. Molecular screening
B. Postnatal diagnosis
C. None of these
D. Presymptomatic diagnosis
Check answer and explanation
Answer: Presymptomatic diagnosis
Explanation Diagnosis of a genetic condition before the appearance of symptoms is called presymptomatic diagnosis . It helps in early detection and management of genetic disorders like Huntington’s disease.