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
Match the Column I and II.
Column I |
Column II |
A. Bulliform cells |
1. Stomata |
B. Guard cells |
2. Aerating pore |
C. Lenticels |
3. Accessory cells |
D. Subsidiary cell |
4. Isobilateral cells |
A B C D
(a) 1 2 3 4
(b) 3 1 2 4
(c) 4 1 2 3
(d) 4 3 2 1
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
Parenchymal cells have ________ walls and are made up of _____________.
(1) Thick, cellulose
(2) Thin, cellulose
(3) Thick, hemicellulose
(4) Thin, hemicellulose
Lignified cell wall is characteristic feature of
(1) Parenchyma
(2) Collenchyma
(3) Sclerenchyma
(4) None
_________ are commonly found in the fruit walls of nut.
1. | Parenchyma | 2. | Collenchyma |
3. | Sclerenchyma | 4. | Complex tissue |
Tracheids, vessels, xylem fibres and xylem parenchyma are components of
(1) Simple tissue
(2) Xylem
(3) Sclereids
(4) Pith
Dead cell without protoplasm is ___________.
(1) Sclerenchyma
(2) Tracheids
(3) Parenchyma
(4) Both A and B
In flowering plants which of the following are main water transporting element
(1) Tracheids
(2) Vessels
(3) Both A and B
(4) None of the above
Central cavity is found in
(1) Vessels
(2) Tracheids
(3) Both (1) and (2)
(4) None