The cross involves RRyy × rrYY. All F1 offspring inherit the RrYy genotype. Since R (round) is dominant over r (wrinkled) and Y (yellow) is dominant over y (green), all F1 seeds will be round and yellow in appearance. Correct ...
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The student can see distant objects like the blackboard clearly but cannot read nearby objects like the textbook. This indicates difficulty in focusing on near objects, a condition known as long-sightedness (hypermetropia), where the near point of the eye has ...
To obtain an image of magnification M = − 1, the image must be real, inverted and of the same size as the object. This happens when the object is placed at twice the focal length of a convex lens. ...
Auxins are plant hormones that stimulate cell elongation on the side of the shoot away from light, causing the shoot to bend towards light. This process is called phototropism, helping the plant capture sunlight efficiently. The correct answer is (D) ...
Aluminium does not rust like iron because it forms a protective oxide layer (Al₂O₃) that prevents further corrosion. Its dull appearance can be prevented by polishing or anodizing, which maintains shine. Aluminium is preferred for roofing because it is lightweight, ...