Q. No.The terminal and axillary buds arise from
1. apical meristem
2. intercalary meristem
3. lateral meristem
4. parenchyma
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Which of the following is true about tracheids and vessels
1. Tracheids are multicellular with narrow lumen
2. Tracheids are unicellular with wide lumen
3. Vessels are multicellular with wide lumen
4. Vessels are unicellular with narrow lumen
Common feature in vessel elements and sieve tube elements is
| 1. Enucleate condition | 2. Presence of P-protein |
| 3. Thick secondary wall | 4. Pores on lateral walls |
Secondary growth is best observed in
1. Teak and Pine
2. Deodar and Fern
3. Wheat and maiden Hair Fern
4. Sugarcane and Sunflower
The length of different internodes in a culm of sugarcane is variable because of
1. Size of leaf lamina at the node below each internode
2. Intercalary meristem
3. Shoot apical meristem
4. Position of axillary buds
The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is
| 1. differentiating | 2. maturing |
| 3. elongating | 4. widening |
Anatomically, fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
1. Position of protoxylem
2. Absence of secondary xylem
3. Absence of secondary phloem
4. Presence of cortex
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Heart wood differs from sapwood in
1. Absence of vessels and parenchyma
2. Having dead and non-conducting elements
3. Being susceptible to pests and pathogens
4. Presence of rays and fibres
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Some vascular bundles are described as open because these
1. are surrounded by pericycle but no endodermis
2. are capable of producing secondary xylem and phloem
3. possess conjunctive tissue between xylem and phloem
4. are not surrounded by pericycle
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Water containing cavities in vascular bundles are found in
| 1. Sunflower | 2. Maize |
| 3. Cycas | 4. Pinus |
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