Which one of the following structures between two adjacent cells is an effective transport pathway?
Plasmodesmata
Plastoquinones
Endoplasmic reticulum
Plasmalemma
Related Questions
Which structure connects the cytoplasm of adjacent plant cells through the cell wall?
Desmosomes
Gap junctions
Tight junctions
Plasmodesmata
The membrane potential of cell favours the
Movement of cations into the cell
Movement of anions into the cell
Action of a proton pump
Action of an electrogenic pump
Which component of the cell wall contributes most to its tensile strength?
Cellulose
Hemicellulose
Pectin
Lignin
Choose the correct statement from the codes given below
I. Separation from extracellular medium allows the cells to maintain its chemical pool, orderliness of structure and reactions in contrast to disorderly distribution and randomly interacting molecules in the extra-cellular medium
II. Cells are unable to recognise one another due to the present of specific chemicals on their surface
III. Cells of plant tissues are often connected with one another through cytoplasmic bridges called plasmodesmata
IV. Different cells of an organism communicate as well as exchange materials with one another
II and III
I and II
I, III and IV
I, II, III and IV
Plasmodesmata are channels that traverse the cell walls of plant cells. Their primary function is:
Preventing water loss
Providing structural support
Intercellular communication and transport
Synthesizing cell wall components
Plasmodesmata are
Lignifiesd cemented between cells
Locomotory structures
Membranes connecting the nucleus with plasmalemma
Connections between adjacent cells
The transport of metabolities across the biomembrane occurs through
Passive transport
Active transport
In case of bacteria, plasma membrane forms extensions to form special membranous structure called mesosomes
All of the above
Plasmodesmata connections helps in
Cytoplasmic streaming
Synchronous mitotic divisions
Locomotion of unicellular organisms
Movement of substances between cells
Middle lamella is mainly composed of
Hemicellulose
Muramic acid
Calcium pectate
Phosphoglycerides
The secondary cell wall is deposited:
Before the primary cell wall
Simultaneously with the primary cell wall
After the cell has stopped growing
Only in certain specialized cells
