quiz 7 Flashcards
What is the transpiration stream?
The stream of water moving through the plant in the xylem
During an investigation into the effect of temperature on rate of water uptake by plant, name 2 control variables
Light intensity,same plant species and humidity levels of the air
What is the function of the phloem tissue?
Transport dissolved sugars around the plant
List one adaptation of a palisade cell
Lots of chloroplasts
Explain how increased light intensity increases the rate of transpiration
High light intensity stimulates the opening of the stomata. so,more water can evaporate from the leaf
Define translocation
The movement of dissolved sugar throughout the plant, in the phloem
Put the following leaf structures in order, top to bottom
waxy cuticle, upper epidermis, palisade layer,spongy mesophyll, lower epidermis+ guard cells+ stomata
How does is sugar(glucose) produced in the leaves by photosynthesis carried to other cells in plant?
sugar is dissolved and then moved through the plant in phloem
Give 3 adaptations of a root hair cell?
No chlroplasts,lots of mitochondria,large vacoule
Name 3 plant tissues
epidermis,palisade layer,spongy mesophyll,xlem,phloem and meristem
What is the word equation for photosynthesis?
carbon dioxide+ water——> glucose+ oxygen
What is the role of the palisade layer?
Where photosynthesis happens
What is the role of guard cells?
To control the opening and closing of the stomata
Once water has entered plants through root hair cells, how is it carried to the leaves so it can be used in photosynthesis
Water is carried up through the plant in the xylem tissue
During an investigation into the effect of light intensity on rate of water uptake by a plant, What is the dependent variable?
Rate of water uptake
