Cells having cellulose, hemicellulose and pectin deposits on the wall and shows its presence commonly in the petiole of leaf and growing green stems belong to
1. Sclerenchyma
2. Collenchyma
3. Aerenchyma
4. Parencyma
As compared to the monocot root, the dicot root has/shows
1. Large and well-developed pith
2. Primary growth only
3. Sclerenchymatous pericycle
4. Fewer xylem bundles
Which of the given figure represents the internal structural details of a monocot root?
1.
2.
3.
4.
The most abundant and common tissue in plants
1. Has non-vacuolated cytoplasm
2. Is living and has cellulosic wall
3. Stores ergastic substances always
4. Cannot take part in photosynthesis
Secondary meristems are found in
1. All angiosperms
2. Gymnosperms and all monocots
3.Dictos and gymnosperms
4. All spermatophytes
Monocot stems do not have
1. Protophloem
2. Phloem parenchyma
3. Companion cell in phloem
4. Sieve tube and metaphloem
Choose the correct option with respect to sclereids
1. Physiologically active
2. Pits are present
3. Derived from meristems directly
4. Little amount of protoplasm is present
Collenchyma is characterised by
1. Absence of protoplast at maturity
2. Supporting young stem and leaf petiole
3. Lignocellulosic thickening on secondary walls
4. The common presence of intracellular spaces
Epidermal hairs on stems known as trichomes
1. May sometimes be secretory in function
2. Have vascular supply
3. May be soft or stiff but unbranched always
4. Are endogenous in origin like lateral roots
Select the incorrect statement with respect to bast fibres
a. Generally absent in primary phloem
b. Elongated, branched with blunt ends
c. Parenchymatous in nature
d. Becomes dead at maturity
1. a & d
2. b & d
3. b & c
4. a & b