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Total questions: 10
Worksheet time: 9mins
Structure of phloem consists all below, except?
Sieve tube element
Tracheids
Companion cell
Sieve plate
Elements which are transported throughout plants are called
Inorganic
sieve elements
key elements
phloem elements
ATP and protein is supplied to companion cells via
sieve tubes
porous wall
cell wall
vascular tissue
What is the most abudant solute in phloem sap?
amino acids
hormones
sugar
minerals
Which of the following statement is true about sieve tube cells?
Sieve tube cells are nucleated but devoid of mitochondria and ER
Companion cells are non-nucleated and regulated by nucleated sieve cell
Sieve tube cells are present in all plants
Companion cells are nucleated and regulates activity of non-nucleated sieve tube
What is the best words to describe sugar source and sugar sink
Both are plants organ and act as storage
Sugar sink can be either roots, fruit or mature leaves and sugar source is shoots
Sugar source act as site for sugar production and sugar sink will store sugar
Companion tube carry food from a sugar source to a sugar sink
Process in which food substances are moved to the rest of plant by phloem is known as
transpiration
respiration
photosynthesis
translocation
Movement of sugar from source to other parts of plant is assist by
active transport
diffusion
endosmosis
capillary action
All events below occurs in sink tissue, except
Water potential increases
Water enters sieve elements from xylem
Higher(+ve) solute potential
Phloem turgor pressure decrease
What is the form of sugar being move to companion cells?
glucose
maltose
sucrose
starch
