HORTICULTURE SCIENCE
PLANT BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which cells are described here? In pairs, these form the stomatal pore in the epidermis of plants. They control the opening and closing of the pore by changes in their turgidity brought about by the presence or absence of light.
|
|
parenchyma
|
|
|
chromatophores
|
|
|
spongy mesophyl
|
|
|
gaurd cells
|
|
|
companion cells
|
Explanation:
Detailed explanation-1: -Stomata are pores on the leaf surface, which are formed by a pair of curved, tubular guard cells; an increase in turgor pressure deforms the guard cells, resulting in the opening of the stomata.
Detailed explanation-2: -Final answer: The pores in the stomata are surrounded by bean shaped cells called guard cells.
Detailed explanation-3: -Opening and closure of the stomatal pore is mediated by changes in the turgor pressure of the two guard cells. The turgor pressure of guard cells is controlled by movements of large quantities of ions and sugars into and out of the guard cells.
There is 1 question to complete.