In monocotyledonous stem
1. | Hypodermis is parenchymatous |
2. | Each vascular bundle is surrounded by collenchymatous bundle sheath |
3. | Peripheral vascular bundles are generally larger than centrally located ones |
4. | Water containing cavities are present within the vascular bundles |
A tree can be killed by removing its bark, as this also removes the ________.
1. Phelloderm only
2. Phellem only
3. Primary xylem
4. Secondary phloem
Choose odd with respect to collenchyma
1. Living mechanical tissue
2. Intercellular space is absent in angular type
3. Thickening of the wall is due to deposition of lignin
4. Found in hypodermis of dicot stem
Select incorrect statements from the given below:
(i) | Endodermis with Casparian strips are found in the dicot stem. |
(ii) | The endodermis is a part of the stele. |
(iii) | Open vascular bundles are found in some monocots. |
(iv) | Bulliform cells are found in the upper epidermis in the isobilateral leaf. |
1 (i) and (ii)
2. (ii) and (iii)
3. (i), (ii) and (iii)
4. Only (iv)
Select incorrect statement with respect to the anatomy of monocot stem
1. Parenchymatous ground tissue is extended from hypodermis to center
2. Hypodermis is made of thick-walled living mechanical tissue
3. Vascular bundles are conjoint, collateral and closed with endarch xylem
4. Pith is absent
In parenchyma, all cells are isodiametric and
1. Thin-walled
2. Thick-walled
3. Lignified-walled
4. Devoid of intercellular spaces
In which character an isobilateral leaf differs from the dorsiventral leaf?
1. Scattered vascular bundles
2. Undifferentiated mesophylls
3. Absence of stomata with guard cells
4. Conjoint, collateral, and closed vascular bundle
Tissue which provides mechanical strength and flexibility to young dicot stem is present in
1. Pith
2. Endodermis
3. Hypodermis
4. Cortex
The ground tissue system is constituted by all off these, except
1. Medullary rays
2. Pericycle
3. Mesophyll
4. Xylem
Conjoint, collateral, closed vascular bundles without phloem parenchyma are found in plants which have
1. Differentiated ground tissue in the stem
2. Dedifferentiated pericyclic structure in the mature root
3. Sclerenchymatous hypodermis in stem
4. Developed pith in stem