The correct option is (A). Both statements are true, and the reason correctly explains the assertion. Tallness in pea plants is controlled by a gene that produces an enzyme responsible for synthesising growth hormones, making the plant tall. CBSE Class 10 ...
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The correct option is (C). The use of plastic as packaging material increases non-biodegradable waste. Plastics do not decompose naturally, leading to long-term environmental pollution and harm to soil, water, and living organisms. CBSE Class 10 Science Question Paper 2025 with ...
The correct option is (B). The correct statements are (ii), (iii), (iv). Ozone is poisonous but in the stratosphere, it forms a protective layer shielding Earth from harmful ultraviolet rays that cause skin cancer and damage living tissues. Science important questions ...
The correct option is (A). When a black rabbit (BB) is crossed with a white rabbit (bb), all offspring (Bb) have black fur. This shows that black colour is dominant over white, making the cross BB × bb. Science important questions ...
The correct option is (D). High blood glucose levels are due to inadequate secretion of insulin from the pancreas. Insulin regulates blood sugar levels; its deficiency leads to diabetes mellitus, causing excess sugar in blood and urine. Science important questions Final ...