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.
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Answer: Porphyrin ring with Mg²⁺
Explanation The functional group in chlorophyll is a porphyrin ring with a central magnesium ion (Mg²⁺). This large ring structure, specifically a chlorin ring, which is a reduced porphyrin, It is responsible for absorbing light energy during the process of photosynthesis.
ہیپاٹیکوپسیڈا کے پودوں کو عام طور پر ____ کے نام سے جانا جاتا ہے؟
Answer: Liverworts
Explanation Hepaticopsida (Liverworts) are a class of bryophytes that grow in moist environments. They have flattened, lobed thalli resembling the liver , hence the name liverworts .
نائٹروجن پودوں اور جانوروں میں _____ کی شکل میں پایا جاتا ہے؟
Answer: Proteins
Explanation Nitrogen is a key component of amino acids , the building blocks of proteins . Thus, in plants and animals , nitrogen mainly exists in the form of proteins .
Answer: Systematics
Explanation The branch of botany that deals with the classification and evolutionary study of plants is called Systematics, which includes Plant Taxonomy,
دیئے گئے ماحولیاتی نظام میں پودوں کی جانشینی کا اختتام مرحلہ ______ ہے؟
Answer: Climax
Explanation The culminating stage of plant succession in a given ecosystem is climax . It represents a stable, mature community that remains relatively unchanged over time.
خمیر ______ میں شامل ہے؟
Answer: Ascomycetes
Explanation Yeast belongs to the Ascomycetes group. It is also known as sac fungi . It reproduces asexually by budding and sexually by forming ascospores.
انجیوسپرمز کس دور میں پیدا ہوئے؟
Answer: Cretaceous period
Explanation Angiosperms are flowering plants. They first appeared in the Cretaceous period. This was about 145–66 million years ago. They diversified rapidly. Today they dominate plant life on Earth.
کیسپیرین بینڈ کہاں پائے جاتے ہیں؟
Answer: Endodermis
Explanation Casparian bands (Casparian strips) are waterproof cell wall structures found in the endodermis of roots. They regulate water and mineral uptake. It forcing substances to pass through the plasma membrane instead of moving freely between cells.
اسٹیج جس میں پلازما جھلی سیل کی دیوار سے الگ ہونے لگتی ہے اسے _____ کہا جاتا ہے؟
Answer: Plasmolysis
Explanation Plasmolysis occurs when a plant cell loses water due to osmosis . It causing the plasma membrane to shrink away from the cell wall. It happens in hypertonic solutions where the external solute concentration is higher than inside the cell.
تمام کوکی ہمیشہ ______ ہوتے ہیں؟
Answer: Heterotrophs
Explanation Fungi cannot produce their own food as they lack chlorophyll. They obtain nutrients by decomposing organic matter or forming symbiotic relationships.
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