In dicot stem the vascular bundle is:-
1. Conjoint, open and with exarch protoxylem.
2. Conjoint, open and with endarch protoxylem.
3. Conjoint and closed.
4. Scattered, each surrounded by a sclerenchymatous bundle sheath.

Subtopic:  Vascular Tissue System |
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Bulliform cells:

1. Are found in dorsiventral leaves and help in photosynthesis.

2. Are found in dorsiventral leaves and help in minimizing water loss.

3. Are found in isobilatetral leaves and help in minimizing water loss.

4. Are found in isobilatetral leaves and help in photosynthesis.

Subtopic:  Monocot Leaf |
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During secondary growth in the stem:-

1. The amount of secondary xylem produced is more than the secondary phloem as the
cambium is generally more active on the inner side than the outer.

2. the amount of secondary phloem produced is more than the secondary xylem as the cambium is generally more active on the inner side than the outer.

3. the amount of secondary xylem produced is more than the secondary phloem as the cambium is generally more active on the outer side than the inner.

4. the amount of secondary phloem produced is more than the secondary xylem as the cambium is generally more active on the outer side than the inner.

Subtopic:  Activity of Vascular Cambium |
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In temperate region plants, the wood with fewer xylary elements and narrow vessels, is termed as:-

1. Spring wood
2. Autumn wood
3. Sap wood
4. Heart wood

Subtopic:  Types of Wood |
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The term 'bark' includes : 

I.      Phellogen

II.     Phellem

III.    Phelloderm

IV.     Secondary phloem

 

1.       I, II and III only

2.       I, II and IV only

3.       II, III and IV only

4.       I, II, III and IV only

Subtopic:  Activity of Cork Cambium |
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Identify the incorrect statement:

1.  The presence of vessels is a characteristic of angiosperms

2.  In roots the primary xylem is exarch

3.  Gymnosperms lack albuminous cells and sieve cells

4.  Bast fibers are generally absent in primary phloem

Subtopic:  Complex Tissue: Phloem |
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Parts of grasses removed by the grazing herbivores are regenerated due to the activity of: 

1. Apical meristem

2. Intercalary meristem

3. Interfascicular cambium

4. Fascicular vascular cambium

Subtopic:  Meristematic Tissue: Shoot Apex |
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In the dicot root, the vascular cambium:-
1. is absent
2. is completely secondary in origin
3. does not form a continuous ring
4. originates from the tissue just above the phloem bundles

Subtopic:  Anatomy of Root |
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The pericycle, which gives rise to lateral roots, consists of:

1. Epithelial cells

2. Meristematic cells

3. Parenchymal cells

4. Endodermal cells

Subtopic:  Anatomy of Root |
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Summer wood is:

(1) the same as heartwood.

(2) found to the outside of each annular ring of xylem.

(3) found to the inside of each annular ring of xylem.

(4) formed throughout the growing season.

Subtopic:  Types of Wood |
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