| 36. | Chemical energy is supplied to eukaryotic cells by |
| a. | chloroplasts and golgi complexes |
| b. | mitochondria and ribosomes |
| c. | mitochondria only |
| d. | mitochondria and chloroplasts |
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Answer: (d).mitochondria and chloroplasts
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| 37. | Which part of a plant contains the male sex cell? |
| a. | Ova |
| b. | Style |
| c. | Stamen |
| d. | Pollen |
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Answer: (d).Pollen
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| 38. | A widely accepted explanation for transport of sugar in phloem is called |
| a. | root pressure theory |
| b. | transpiration |
| c. | pressure flow hypothesis |
| d. | cytoplasmic streaming |
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Answer: (c).pressure flow hypothesis
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| 39. | Phloem is composed of |
| a. | vessel elements and companion cells |
| b. | tracheids and vessel elements |
| c. | sieve-tube elements and companion cells |
| d. | tracheids and sieve-tube elements |
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Answer: (c).sieve-tube elements and companion cells
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| 40. | The movement of most minerals, including potassium into root cells is by |
| a. | osmosis |
| b. | diffusion |
| c. | bulk flow |
| d. | active transport |
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Answer: (d).active transport
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