Identify the tissue system from among the following

A. Parenchyma

B. Xylem

C. Epidermis

D. Phloem

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A conjoint and open vascular bundle will be observed in the transverse section of

A. Monocot root

B. Monocot stem

C. Dicot root

D. Dicot stem

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Anatomically fairly old dicotyledonous root is distinguished from dicotyledonous stem by

A. Position of Protoxylem

B. Absence of secondary xylem

C. Absence of secondary phloem

D. Presence of cortex

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Which of the following is correct

1. Uneven thickening of cell wall is characteristic of sclerenchyma

2. Periblem forms cortex of stem and root

3. Tracheids are chief water conducting element in gymnosperms

4. Companion cell is devoid of nucleus at maturity

A. 2,3

B. 1,4

C. 1,2

D. 4

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The term bark means

A. Phellem, phelloderm and vascular cambium

B. Phellem, Phellogen, phelloderm and secondary phloem

C. Periderm and secondary xylem

D. Cork cambium and cork

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Which of the following is correct about transport or conduction of substances.

A. Organic food moves upward through xylem

B. Organic food move up through phloem

C. Inorganic food move upward and downward through xylem

D. Organic food move upward and downward through phloem

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Axillary bud and terminal are derived from

A. Lateral meristem

B. Intercalary meristem

C. Apical meristem

D. Parenchyma

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Which of the following are true

A. Vessels are multicellular with narrow lumen

B. Tracheids are multicellular with narrow lumen

C. Vessels are unicellular with wider lumen

D. Tracheids are unicellular with narrow lumen

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Which of the following is not true about Sclereids?

A. These are parenchyma cells with thick lignified walls

B. These are are spherical, oval or cylindrical, highly thickened dead cells 

C. These are commonly found in shells of nuts and in pulp of guava, pear, etc

D. These are also called stone cells

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Vessels are found in

A. All angiosperms and some gymnosperms

B. Most of angiosperms and few gymnosperms

C. All angiosperms, all gymnosperms and some pteridophyta

D. All pteridophyta

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