| 16. | An internal factor that influences growth in plants is |
| a. | hormones |
| b. | water |
| c. | nutrition |
| d. | all of the above |
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Answer: (d).all of the above
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| 17. | Synthesis of cytoplasm and cell wall material takes place during |
| a. | maturation |
| b. | cell division |
| c. | elongation |
| d. | differentiation |
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Answer: (b).cell division
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| 18. | Acetabularia is a kind of |
| a. | fungi |
| b. | protist |
| c. | multicellular alga |
| d. | unicellular alga |
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Answer: (d).unicellular alga
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| 19. | Phenomena that some cells evoke a specific developmental response in other cells is |
| a. | embryonic influence |
| b. | embryonic induction |
| c. | embryonic stimulation |
| d. | embryonic dominance |
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Answer: (b).embryonic induction
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| 20. | Notochord is one of few prominent structural features in chick embryo of about |
| a. | 15 hours |
| b. | 18 hours |
| c. | 13 hours |
| d. | 10 hours |
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Answer: (b).18 hours
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