Continuum of cytoplasm between cells connected through plasmodesmata Assists in
ID: 227226 • Letter: C
Question
Continuum of cytoplasm between cells connected through plasmodesmata Assists in mineral transfer from roots to shoots Ensures that all substances entering the stele pass through at least one membrane a. phloem sap b. xylem sap c. Both a & b. Contains minerals a. source b. sink. A green apple A maple leaf Multiple Choice The proton pump a is a passive process b. uses the energy of a proton gradient to generate ATP. c. releases kinetic energy d operates by osmosis e. uses the energy stored in ATP to produce a proton A cell placed in a solution with a lower water potential will a. lose water and senate b. lose water and become turgid c. gain water and become turgid d. low water and plasmotyze e. gain water and plasmolyze. The last thing all water and solute molecules must pass through before they can enter the vascular system and move upward to the leaves is a. a stoma b. a root hair cell c. an endodermal cell. d. an epidermal cell. e. a protoderm cell.Explanation / Answer
Answer 11: e. uses energy stored in ATP to produce a proton gradient. (Explained as below)
Their movement is brought about by when ATP released during cellular respiration is used by the proton pump to create a proton gradient. Proton gradients aid in secondary transport mechanisms.
Answer 12: c. gain water and become turgid. (Explained as below)
This is because osmosis will draw water into the cell.
Answer 13: d. an epidermal cell. (Explained as below)
Epidermal layer is covers the cortex, which in turn, covers the endodermal layer. So, epidermal layer is the required layer and it arises from the protoderm cell.
Answer 14: e. cohesion and adhesion of water molecules. (Explained as below)
During transpiration water moves into the leaves, and as one water molecule exits form the leaves another takes its place. Evaporation occurs continuously in this way. Meanwhile the adhesive and cohesive forces between the molecules of water in the leaves and stem hold themselves and form columns of water in the xylem.
Answer 15: e. osmotic changes caused by alterations in the salt content. (Explained as below)
The salt content in the soil is hypotonic to the root hair cells and causes the water from the soil into the roots and upward.
Answer 16: a. control the rate of transpiration. (Explained as below)
Guard cells have a turgor pressure mechanism due to which they can regulate the opening and closing of the stoma and control the rate of transpiration.
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