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 |
1. A-iii, B-iv, C-i, D-ii
2. A-i, B-ii, C-iii, D-iv
3. A-iii, B-ii, C-iv, D-i
4. 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