Stomata are usually opena. at night, when the plant requires a supply of oxygen.b. during the day, when the plant requires a supply of carbondioxide.c. day or night if there is excess water in the soil.d. during the day, when transpiration occurs.e. Both b 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: 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: 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: Turgor pressure in a plant is directly related to 0000 the amount of water within the chloroplasts…

A: Introduction: Plant cells are similar to human cells, with the exception that they are surrounded by…

Q: Explain the mechanisms ensuring the conveyance of the water from the soil and its transport to the…

A: Introduction  Plants need continuous supply of water and nutrients for their survival and growth.…

Q: Which of the following resource(s) do plants need to survive (select all that apply):  A. O2 for…

A: Plants are autotrophic organisms that can produce there own food by trapping the solar energy. They…

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

A: The correct answer is option e. Casparian strip

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: Which of the following would require active transport? Select one: a. Stomata opening b. Potassium…

A: Active transport It is defined as the process of movement of molecules through a membrane against…

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: Transpiration harnesses the force of gravity to accelerate water transportation from the soil to the…

A: Transpiration It is the process of moving water through the plant and the evaporation of water…

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…

Q: What is the tradeoff to plants when they evapotranspirate in a hot environment? Group of answer…

A: Introduction :- Evapotranspiration is the combined process of evaporation and transpiration, in…