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In temperate regions, during spring seas...

In temperate regions, during spring season, cambium is very active and produces a large number of xylary elements having vessel with wider cavities wood formed in this way is called as

A

Spring wood

B

Autumn wood

C

Heart wood

D

Sap wood

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Read the following statements. A. All tissue on the inner side of the endodermis constitute the stele. B. Peripheral vascular bundles are generally larger than the centrally located ones in monocot stems. C. In late wood, cambium produces a large number of xylary elements having vessels with wider cavities. D. The cork is impervious to water due to suberin deposition in the cell membrane. How many of the above statements are incorrect?

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In temperate regions, cambium is less active during winter season and forms fewer xylary elemetns that have narrow vessels, this wood is called as

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ALLEN-TEST PAPER 2-BIOLOGY
  1. Identify the tissue shown in the diagram and select correct match with...

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  2. The vascular cambium of dicot stem is

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  3. A,B and C in the given diagram are:

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  4. Which one of the following are generally absent in primary phloem but ...

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  5. Major tissue found in pulp of fruits like guava, pear and sapota are :...

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  6. Heartwood is characterised by all, except

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  7. In trees, the death of protoplasm is essential for a vital function su...

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  8. Match the items in column I with column II and choose the correct opti...

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  9. In temperate regions, during spring season, cambium is very active and...

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  10. Plant of arid regions that modifies its stem into flattened structure ...

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  11. Match the following? {:(,"(i) Microsporophyll ","(A) Carpel "),(,"(i...

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  12. Born in August ---------- in ------------- in Tamil Nadu, Mankambu Sam...

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  13. The School of Cytogenetics and Radiation Research established at the I...

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  14. Swaminathan initiated collaboration with ------ which culminated in th...

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  15. Swaminathan is also the initiator of ‘Lab-to-Land’, food security and ...

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  16. The disease like malaria and filiariasis are transmittal through insec...

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  17. Incorrect about common cold is

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  18. ---------- Caused by Plasmodium falciparum is the most serious one and...

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  19. Mark the incorrect statement

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  20. Incorrect about the given diagram is

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