AP BIOLOGY

PLANTS

TRANSPORT IN PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the function of plasmodesmata in plant cells?
A
to act as a barrier to water-soluble substances
B
to allow active transport of ions and sucrose between cells
C
to allow the symplastic movement of substances between cells
D
to enable cells to recognize each other
Explanation: 

Detailed explanation-1: -Plasmodesmata connect cytoplasms of adjacent cells by traversing the cell wall. Appressed endoplasmic reticulum, called the desmotubule, runs through the plasma membrane-lined pore. Molecules move via the cytoplasmic sleeve between the desmotubule and plasma membrane.

Detailed explanation-2: -Plasmodesmata (PD) are gated plant cell wall channels that allow the trafficking of molecules between cells and play important roles during plant development and in the orchestration of cellular and systemic signaling responses during interactions of plants with the biotic and abiotic environment.

Detailed explanation-3: -The symplastic pathway: It provides the movement of water from one cell to another cell by plasmodesmata. Symplast is the inner side of the plasma membrane.

Detailed explanation-4: -Plasmodesmata connect neighbouring cells throughout a plant to establish the symplast. Plasmodesmata establish an interconnected cytoplasm called the symplast, through which metabolites, proteins, and RNAs are exchanged between cells, tissues, and organs.

Detailed explanation-5: -The plant cell wall possesses small pores called plasmodesmata which connects the adjacent cells. It is made up of cytoplasmic strands. It helps in the transportation and communication between cells.

There is 1 question to complete.