The similar size of vascular bundle in monocot leaf is due to
1. Reticulate venation
2. Parallel venation
3. Branched venation
4. Radial venation
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
Match the following
A.Cuticle | i. guard cells |
B. Bulliform cells | ii. single layer |
C. Stomata | iii. waxy layer |
D. Epidermis | iv. empty colourless cell |
A. A-iii, B-iv, C-i, D-ii
B. A-i, B-ii, C-iii, D-iv
C. A-iii, B-ii, C-iv, D-i
D. A-iii, B-ii, C-i, D-iv
The desert grasses, often curls their leaf to minimise water loss due to presence of
1. Spines
2. Palisade parenchyma
3. Bundle sheath cells
4. Bulliform cells
The stomata are equally distributed on both the surfaces of the epidermis in
1. Dorsiventral leaf
2. Dicot stem
3. Isobilateral leaf
4. Dicot root
Which is the correct set of options with respect to the following?
1. Dicot stem – Differentiated ground tissue.
Monocot stem – Endarch xylem.
Dicot leaf – Isobilateral leaf.
Monocot leaf – Dorsiventral leaf.
2. Dicot stem – Scattered vascular bundle.
Monocot stem – Arranged vascular bundle.
Dicot leaf – Amphistomatic.
Monocot leaf – Hypostomatic.
3. Dicot stem – Endodermis is called a starch sheath.
Monocot stem – Vascular bundle surrounded by a sclerenchymatous sheath.
Dicot leaf – Palisade and spongy parenchyma.
Monocot leaf – Stomata present on both surfaces.
4. Dicot stem – Arranged vascular bundle.
Monocot stem – Endodermis is called a starch sheath.
Dicot leaf – Amphistomatatic.
Monocot leaf – Palisade and spongy
parenchyma.
In grasses leaves are exposed when bulliform cells becomes_________ and leaves curl inwards when they are _________
(1)flaccid ,turgid
(2)plasmolysed, turgid
(3)turgid, flaccid
(4)Both B and A
The no of stomata are _______on upper and ______lower surface in monocot leaf
1.more, less
2.less, more
3.equal, equal
4.None of the above
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.
Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following :
1. Tyloses in vessels
2. Closure of stomata
3. Flaccidity of bulliform cells
4. Shrinkage of air spaces in spongy mesophyll