Q. No.___________ arrangement of vascular bundle is a characteristic of dicot stem.
(1) Ring
(2) Radial
(3) Centric
(4) Peripheral
(1) Ring
(2) Radial
(3) Centric
(4) Peripheral
A large number of rounded, parenchymatous cells with large intracellular spaces which occupy the central position of stem constitute the __________.
(1) Lumen
(2) Pith
(3) Cortex
(4) Vascular bundle
Phloem parenchyma is absent in
(1) Dicot stem
(2) Monocot stem
(3) Vascular bundle
(4) Both A and B
In dicot leaves the ________ epidermis generally bears more stomata than the _________ epidermis.
(1) Abaxial, adaxial
(2) Adaxial, abaxial
(3) Axial, coaxial
(4) Coaxial, axial
The tissue between the upper and lower epidermis is called
(1) Chlorophyll
(2) Mesophyll
(3) Cambium
(4) Endodermis
Mesophyll in dicot leaves has two type of cell namely_________.
(1) Palisade parenchyma and spongy parenchyma
(2) Pith and Protoxylem
(3) Xylem and phloem
(4) Epidermis and endodermis
Vascular bundles are surrounded by a layer of thick walled ________.
1. Bundle sheath cells
2. Cuticle
3. Casparian strip
4. Waxy cell
In monocot leaf
1. Stomata is present on both surface of epidermis
2. Mesophyll is not differentiated into palisade and spongy parenchyma
3. There is no parenchyma
4. Both 1 and 2
In grasses certain adaxial epidermal cells along the vein modify themselves into large, empty, colourless cells called ________.
(1) Bark
(2) Bulliform cells
(3) Bundle sheath cells
(4) Spongy mesophyll cells
Bulliform cells help in
(1) Heat resistance
(2) Minimizing water loss
(3) Maintaining ion balance
(4) Mineral acquisition
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