MCQs Botany-10 Posted on 2024-07-042024-11-08Author admin 0 MCQs Botany-10 1. Which of the following nitrogenous bases are found in RNA? Thymine, Guanine, Cytosine, Adenine Adenine, Thymine, Guanine, Uracil Adenine, Thymine, Cytosine, Uracil Uracil, Guanine, Cytosine, Adenine 2. ——- is the arrangement of leaves on a stem Venation Leaf morphology Leaf arrangement Phyllotaxis 3. The ————- greatly enhances the ability of plant leaves to perform photosynthesis efficiently Thickness of the cuticle Arrangement of the mesophyll cells Number of veins Size of the stomata 4. In plant deficiencies in certain minerals can cause———— Increased photosynthesis rate Faster transpiration Stronger cell walls Discoloration of leaves 5. The process by which flowers respond to changes in water availability is called —- Hydrotropism Hydroregulation Hydrogenesis Hydromorphosis 6. The waxy coating on some fruits helps to: Reduce water loss and spoilage Increase water loss Attract pollinators Enhance photosynthesis 7. A ——- is the stalk that connects an individual flower within an inflorescence to the main stalk of the inflorescence Pedicel Peduncle Receptacle Stalk 8. Heterospary is a characteristic of ————- Ulva Selaginella Equisetum Lycopodium 9. What is the advantage of cross-pollination? Produces larger flowers Increases genetic diversity Requires less energy More reliable seed production 10. ——– leaf venation has a single main vein (midrib) running down the center Net-like Dichotomous Parallel Reticulate Loading …