Which type of cavity is  present within the vascular bundles of monocot stem

(1)air cavity

(2)water cavity

(3) Both A and B

(4) Food cavity

Subtopic:  Monocot Stem |
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Primary xylem is of two types, they are-

(1) Protoxylem and metaxylem

(2) Xylem parenchyma and xylem fibres

(3) Tracheids and vessels

(4) Simple xylem and complex xylem

Subtopic:  Complex Tissue: Xylem |
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In stems the Protoxylem lies toward ______and Metaxylem lies toward the_________ respectively.

(1) Centre, periphery

(2) Periphery, centre

(3) Below, above

(4) Above, below

Subtopic:  Dicot Stem |
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In roots, the Protoxylem lies toward __________ and Metaxylem lies toward the _______ respectively.

(1) Periphery, centre

(2) Centre, periphery

(3) Above, below

(4) Below, above

Subtopic:  Anatomy of Root |
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Phloem in angiosperm is composed of
1. Sieve tube element
2. Companion cell
3. Phloem parenchyma
4. Phloem fibres
5. Tracheids
6. Vessels
A. 1,2,3,4
B. 2,3,4,5
C. 3,4,5,6
D. None

Subtopic:  Complex Tissue: Phloem |
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Phloem of gymnosperm consist of

(1) Albuminous cells and Sieve cells

(2) Sieve tubes and companion cells

(3) Phloem parenchyma and phloem fibres

(4) None of the above

Subtopic:  Complex Tissue: Phloem |
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Function of sieve tubes are controlled by

(1) Nucleus of sieve tube

(2) Nucleus of companion cell

(3) Nucleus of parenchyma

(4) No function as they are dead cells

Subtopic:  Complex Tissue: Phloem |
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The companion cells help in maintaining the ________ in the sieve tube.

(1) Temperature gradient

(2) Cellulose gradient

(3) Pressure gradient

(4) Ion gradient

Subtopic:  Complex Tissue: Phloem |
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Resin, latex and mucilage are found in

(1) Phloem parenchyma

(2) Xylem parenchyma

(3) Phloem pits

(4) None of the above

Subtopic:  Complex Tissue: Phloem |
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Phloem parenchyma is absent in most of the

(1) Dicotyledons

(2) Monocotyledons

(3) Desert plants

(4) None of the above

Subtopic:  Complex Tissue: Phloem |
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Difficulty Level: