| 21. | Acetabularia mediterranea has a cap of |
| a. | regular shape |
| b. | circular shape |
| c. | triangular shape |
| d. | cone shape |
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Answer: (a).regular shape
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| 22. | Growth of multicellular plant is divided into |
| a. | one phase |
| b. | two phases |
| c. | three phases |
| d. | four phases |
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Answer: (d).four phases
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| 23. | In plants, growth and development involve |
| a. | cell division |
| b. | elongation |
| c. | differentiation |
| d. | all of the above |
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Answer: (d).all of the above
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| 24. | Somites are compact cell masses lying immediately lateral to |
| a. | neural folds |
| b. | neural plate |
| c. | neural groove |
| d. | yolk |
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Answer: (a).neural folds
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| 25. | Mesoderm cells migrate medially and caudally from both sides and create a mid line thickening called |
| a. | primitive groove |
| b. | primitive ridge |
| c. | primitive pit |
| d. | primitive streak |
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Answer: (d).primitive streak
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