PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoIn the given exercise, an Assertion is followed by the corresponding Reason. Mark the suitable answer from the given options:
1.
| Assertion: | In the dicot stem, vascular (collateral) bundles can form secondary xylem and phloem tissues and are called open vascular bundles. |
| Reason: | In the dicot stem, cambium is present between phloem and xylem. |
2.
| Assertion: | Generally,in stems, first formed primary xylem lies towards the centre and later formed primary xylem lies towards the periphery. |
| Reason: | Exarch is an arrangement where metaxylem lies in the centre and protoxylem is directed towards the periphery. |
3.
| Assertion: | In dicot root, cortex is made up of thin walled parenchymatous cells and thick walled sclerenchymatous cells arranged alternative to one another. |
| Reason: | In cortex of dicot roots, parenchymatous cells help in the storage of food and water. |
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