Match the hormone with the description. ___ ethylene                 a. efflux carriers set up gradients ___ cytokinin                b. produced in positive and ___ auxin                           negative feedback loops ___ gibberellin              c. affects expression of more ___ ABA                          genes than any other hormone ___ nitric oxide             d. works antagonistically to auxin in                                           apical dominance                                       e. big in stems                                       f. active in bursts

Q: Certain mutations in thale cress cause excess auxin production. What are the impact of these…

A: Auxins are phytohormones (hormones produced by plants) that are secreted in the stem tips with…

Q: Seed germination is stimulated by _____; stem elongation is stimulated by ____________ Select one:…

A: Seed germination is the process of events that begin the germination of seed that grows into new…

Q: 5. Define what a plant hormone is. Also, explain, using an example for each, of how hormones can…

A: Plant hormones/phyto-hormones are signal molecules produced within plants, that occur in…

Q: Plants growing beneath the canopy of an Amazonian forest receive more ____, which ____ stem…

A: The understory is the name for more widely separated, shorter tree species, and immature organisms…

Q: Choose the one answer that fits best. Which of the following is NOT true with respect to plant…

A: Plants come under the category called kingdom ‘Plantae’. They are referred to as living organisms…

Q: which is true regarding how auxin impacts bending of plants?     auxin increases reversible…

A: Auxin is the plant hormone having several impacts on plants.

Q: This plant hormone is a hydrocarbon gaseous hormone, which is best known for its role in fruit…

A: Plant hormone: Plant hormones or phytohormones are organic substances, present within plants in a…

Q: Which hormone can regulate guard cells? Select one: a. ethylene b. abscisic acid c.…

A: Plant hormones are chemical compounds or signaling molecules, that are present in very low…

Q: Match the plant parts with the best description. ___ vascular cambium         a. ground tissue in…

A: There are different parts of plants that have distinct functions. These parts include seeds, leaves,…

Q: Pruning plants can promote lateral stems and increased plant biomass by _____________. Select one:…

A: The organic substances that regulate growth and development of the plant tissues/body are known as…

Q: The ________ are collectively called the calyx. a. sepals b. petals c. tepals d. stamens

A: The ‘angiosperms’ constitute highly advanced plants, which dominate the present vegetation. In…

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: Spraying a plant with which of the following will increase axillary bud growth? Strigolactone…

A: Plant hormones can be referred to as crucial biochemicals that influence plant development and crop…

Q: Stems bend towards the light because____ migrates to the dark side of the stem. phototropin…

A: The ability of plants to use light as an energy source for photosynthesis is referred to as…

Q: What mineral deficiency could cause an abnormal development of vascular system, especially xylem?…

A: Introduction  One of the two different kinds of transport tissue found in vascular plants—the other…

Q: Elevated levels of this hormone promote seed dormancy? Select one: a. gibberellin b. abscisic acid…

A: Plant hormones These organic molecules also called phytohormones are responsible for regulating the…

Q: Why IAA is not the only naturally occuring auxins?

A: Plants are autotrophs. They are called so because they are not dependent on other organisms and can…

Q: Which hormone is associated with amylase production? Select one: a. gibberellin b. ethylene c. auxin…

A: Plant hormones are small organic compounds, synthesized by specific plants and tissue. It will…

Q: Far-red light will _________stem elongation and _______seed dormancy. Select one: a. promote,…

A: It is the condition of seeds which is incapable of germination even if conditions suitable for…

Q: This class of plant hormones are exuded by the plant roots. On the one hand, these plant hormones…

A: Plant hormones are organic substances that regulate plant growth and development. Plants produce a…

Q: A high auxin to cytokinin ratio provide shoot formation while a high cytokinin to auxin ratio…

A: Auxin is a plant hormone produced in the stem tip that promotes cell elongation. Cytokinins are a…

Q: When guard cells swell,______ . a. transpiration ceases c. stomata open b. sugars enter phloem d.…

A: Introduction :- Guard cells are found in the epidermis of the leaf, and pairs of guard cells…

Q: Sometimes, plant endogenous enzymes can help breakdown cell walls. This will occur in _____ with the…

A: Fruits are the reproductive structures of plants and they play an important role in seed dispersal.…

Q: Exposure to______ can trigger seed germination. a. light c. smoke b. cold d. all can be triggers

A: Seed germination is the process in which dormant embryo of seed resumes metabolic activities and…

Q: Choose the best answer for following question Grapes can grow larger and exhibit stem elongation. a.…

A: Introduction : Plant hormones are essential signal molecules  produced by the plants that are…