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what are the plant organs responsible for the perception of light variation what is the pigment responsible for this perceptionleaves are mostly
what is photoperiodism photoperiodism is the biological response shown by some living beings to their daily time of light exposure
what is photoperiodphotoperiod is the daily time period of light exposure of a living being the photoperiod might be vary according to the period of
what is thigmotropismthigmotropism is the movement or growth of the plant in response to mechanical stimuli touch or physical contact as when a plant
what are the types of plant geotropisms why do the stem and the root present opposite geotropismsthe parts of geotropisms are the positive geotropism
what is phototropismphototropism is the movement of plant structures in response to light phototropism might be positive or negative positive
to which direction does the growth of one side of a stem branch or root induce the structure to curvewhile one side of a stem branch or root grows
what is the plant hormone remarkable for stimulating flowering and fruit ripening what are the uses and practical inconveniences of that hormonethe
what are cytokinins where are they madecytokinins are phytohormones active in the promotion of cellular division they slow down the aging of tissues
what are gibberellins where are they produced gibberellins are plant hormones that stimulate plant growth flowering and fruit formation also
what is the phenomenon of apical dominance in plants how can it be artificially eliminatedapical dominance is the phenomenon by which high over the
what are synthetic auxins and what are their usessynthetic auxins like indolebutyric acid iba and naphthalenic acid naa are substances same to iaa a
what are plant hormonesplant hormones also known as phytohormones are substances that control the embryonic development and the growth of the adult
what is tree girdling what happens to a plant when that girdle is removed from the stem below the branches malpighis girdling or tree girdling is the
what are the forces that make water to flow within the xylem from the roots to the leaveswater enters the roots because of the root pressure and a
what is capillarity how this phenomenon is chemically explained what is the relevance of capillarity for water transport in plants capillarity is the
what is root pressure root pressure is the pressure that forces water from the soil to be absorbed by the xylem of the root it is because of the
are the xylem and the phloem made of living cells the cells that constitute the xylem ducts are dead cells killed by lignin depositionthe cells of
is transportation of gases in tracheophytes made through the vascular tissuescarbon dioxide and oxygen are not transported by the xylem or phloem
how do plants solve the problem of transporting substances throughout their tissuesin bryophytes the substance transport is completed by diffusion in
when air humidity is high does the plant transpiration increase or lowerwhen air humidity is high transpiration diminishes as transpiration is a
is transpiration the only way through which leaves lose water plants do not only lose water as vapor as by transpiration the leaves also lose liquid
how has the position of the stomata changed in some plants to prevent excessive water loss by transpirationin some plants that have leaves that be
what are stomata how do these structures participate in the plant transpirationstomata singular stoma are small specialized passages for water and
what is plant transpiration what are the two main types of plant transpiration process which of them is more significant in volumetranspiration is