The pressure-flow model of phloem transport states thata. phloem content always flows from the leaves to the root.b. phloem content always flows from the root to the leaves.c. water flow takes sucrose from a source to a sink.d. water pressure creates a flow of water toward the source.e. Both c and d are correct.

Q: Thigmotropism is a plant response toa. light. b. cold.c. touch. d. gravity. e. drought.

A: Answer is c.) touch.

Q: tomatal opening is induced by… Select one: a. high CO2 levels in the leaf. b. abscisic acid…

A: The stomatal opening is induced by the striking of blue light on the stomatal pore. The photons…

Q: Between the bark and the wood in a woody stem, there is a layer ofmeristem calleda. cork cambium.b.…

A: Plants have various kinds of specialized tissue that perform specific functions. All these tissues…

Q: The root cap needs to be continually supplied with new cells by the root apical meristem (RAM)…

A: Chemical coordination refers to the use of chemicals as a signal to stimulate a particular type of…

Q: The Casparian strip affectsa. how water and minerals move into the vascular cylinder.b. vascular…

A: In roots and in some herbaceous stems but not usually in woody stems, the innermost layer of…

Q: which of the following concernig roost is incorrect? a. monocot roots exhibit primary grwoth and…

A: Introduction The root system is the plant axis's descending (developing downwards) part. When a seed…

Q: Leaf tissue with sunken stomata will have ___ humidity near the stomata and ___ transpiration.…

A: Stomata  It refers to the pore located in the epidermis of leaves, stems, and other organs, that is…

Q: These are pores in plant cell membranes that allow for a shared cytoplasm between cells Select one:…

A: Cell membrane or plasma membrane is present in both eukaryotic and prokaryotic cells. Plasma…

Q: The ability of a sunflower plant to become taller is directly due to itsa. apical meristem. c.…

A: Meristem :   Plant tissues responsible for growth of the plant. The cells divided and differentiated…

Q: When comparing vessel elements with sieve tube elements, only vessel elements.   Select one: a.…

A: Vascular bundle of plants :- It is a part of the transport system in vascular plants. The transport…

Q: he movement of water out of phloem sap and back into xylem vessels is often associated with which of…

A: C. Active transport of sugar out of phloem sap into the sink.

Q: Cytokinins, which control root and shoot meristem activities, apical dominance, leaf senescence,…

A: Cytokinins are plant growth hormones which perform cell division in plant roots and shoot system.

Q: The ______ is impermeable to passive water transport, and regulates what enters the xylem. Select…

A: The correct answer is option e. Casparian strip

Q: [PLANT PHYSIOLOGY] When comparing vessel elements with sieve tube elements, only vessel elements.…

A: Complex permanent tissue are composed of two or more type of simple tissue and heterogeneous in…

Q: The electrochemical gradient is __________________. A. The total chemical potential gradient B. The…

A: Xylem is the specialised tissue of vascular plants that transports water and nutrients from the…

Q: This is the location of the carbon fixation reactions in C4 plants.      Select one: a.  the…

A: INTRODUCTION C4 plants These are the plants who avoid photorespiration by using phosphoenolpyruvate…

Q: What is wood? a. Primary xylem that has accumulated inside a cylinder of vascular cambium b.…

A: Option C is the correct answer i.e. Secondary xylem that has accumulated inside a cylinder of the…

Q: Mass flow occurs when; a. Soil temperatures change, thereby changing molecular motion. b.…

A: Water moves from roots to aerial parts of the plant by Mass flow.

Q: Arrange the following four events in an order that explains the mass flow of materials in the…

A: Transportation in plants refers to the movement of water, minerals, and other substances from the…

Q: [PLANT PHYSIOLOGY] Stomatal opening is induced by. Select one: O a. high CO2 levels in the leaf. Ob.…

A: Stomata open in response to light such as blue and red light. Red light usually induces stomatal…

Q: The clinging of xylem sap to the xylem walls to prevent the sap from moving downward is due to…

A: The rising or ascent of sap in the xylem tissue of plants is the vertical movement of water and…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.