71. Movements due to light are shown by September 20, 2025 by Admin A. flowering plants B. lower plants C. all land plants D. all the plants ✅ The correct answer is option A.
72. Plants that grow in saline water are called September 20, 2025 by Admin A. halophytes B. hydrophytes C. mesophytes D. thallophytes ✅ The correct answer is option A.
73. On which of the following plants did Gregor Mendal perform his classical experiment? September 20, 2025 by Admin A. Gram B. Maize C. Pea D. Wheat ✅ The correct answer is option C.
74. Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false? September 20, 2025 by Admin A. By cyanobacteria B. By electrical discharges in the atmosphere C. By industrially synthesised fertilizer D. By denitrification ✅ The correct answer is option D.
75. Pigmentation of skin is due to September 20, 2025 by Admin A. lymphocytes B. monocytes C. leucocytes D. melanocytes ✅ The correct answer is option D.
76. Photosynthesis is a process September 20, 2025 by Admin A. reductive and exergonic B. reductive and catabolic C. reductive, endergonic and catabolic D. reductive, endergonic and anabolic ✅ The correct answer is option D.
77. Prokaryotic cells lack September 20, 2025 by Admin A. nucleolus B. nuclear membrane C. membrane bound by organelles D. All of these ✅ The correct answer is option D.
78. out of proteins, lipids and carbohydrates present in a cell membrane, what is true? September 20, 2025 by Admin A. Lipids are maximum B. Carbohydrates are minimum C. Carbohydrates are maximum D. All three are in equal proportion ✅ The correct answer is option B.
79. Radish is a September 20, 2025 by Admin A. bulb B. conn C. modified root D. tuber ✅ The correct answer is option C.
80. Plants absorb dissolved nitrates from soil and convert them into September 20, 2025 by Admin A. free nitrogen B. urea C. ammonia D. proteins ✅ The correct answer is option A.