The transport system in plants is slower than in animals because plants lack a pumping heart; movement of water, minerals and food occurs mainly through osmosis, diffusion and transpiration pull, which are slower processes compared to the rapid blood circulation ...
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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 ...
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 ...
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, ...
(i) Name of element ‘Z’: Aluminium (Al) (ii) Method of extraction: Aluminium is extracted from bauxite (Al₂O₃·2H₂O) by electrolytic reduction because it is highly reactive and cannot be reduced by carbon. The purified alumina is dissolved in molten cryolite (Na₃AlF₆) to ...