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WorksheetsBot lec - stems
Total questions: 20
Worksheet time: 10mins
Which of the following is NOT considered a function of a stem?
Support
Conduction
for growth
Storage
none
Stems can also exhibit photosynthesis.
True
False
Tuberous roots are classified as specialized stems.
True
False
It is the area of the stem where a leaf or leaves are attached
Internode
Node
Petiole
terminal bud
The hypodermis of a ____ stem is made of of sclerenchyma cells.
monocot
dicot
Trichomes and cuticle are both present in ___ stem.
monocot
dicot
The vascular system in ____ stems comprises of the two distinct regions, cortex and stele.
monocot
dicot
It is the 2nd cambium within the cortex from the epidermis.
phellogen
vascular cambium
xylem
phloem
It is responsible for gas exchange in woody trunk or stem of plants.
stomata
lenticel
guard cells
hydathodes
Pith is present in the dicot stem but absent in monocot stem
true
false
This are large, thin-walled xylem cells produced in the the year when water is usually in abundant supply.
Summerwood
Springwood
Annual rings
latex
These are lighter streaks seen on transverse or cross section of tree trunk
Secondary xylem
Secondary phloem
Vascular bundles
Vascular rays
These are older darker wood at the center which no longer conducts materials but helps strengthen the tree.
Sapwood
Softwood
Hardwood
Heartwood
The Periderm of a woody dicots are composed of:
primary and secondary phloem
primary and secondary xylem
cork tissue and cork cambium
primary xylem and secondary phloem
Which among the statements is/are INCORRECT?
1. The image is a dicot stem
2. The image is a monocot stem
3. The image has no distinct pith
4. The vascular bundle has no cambium
1 only
2 only
1, 3, 4
2, 3, 4
1 and 4 only
What is the sequence of stem development from inside to outside position?
1. primary phloem
2. pith
3. cortex
4. primary xylem
5. protoderm
6. procambium
2, 1, 6, 4, 3, 5
2, 4, 6, 1, 3, 5
2, 1, 5, 4, 3, 6
2, 4, 5, 1, 3, 6
This root bark extract is used in intestinal problems like diverticulosis & Crohn’s disease.
Cinchona pubescens
Prunus serotina
Uncaria tomentosa
Fragaria is an example of:
Tubers
Stolons
Bulbs
Cladophylls
Which of the following is an example of a modified stem?
Thorns
Spines
Prickles
Bristles
The edible scaly part of an onion is a/an:
modified stem
modified root
modified leaves
fruit
