1.what is the tendency of plants to grow towards light called?
2.what is phototropism?
3.what is ethylene?
4. what is gravitropism?
2007-03-19 18:12:27 · 3 answers · asked by Nohbdy 2 in Science & Mathematics ➔ Biology
1. the property of plants to grow towards light is phototrophism.
2. the directional growth of the plants depending upon the availability of light is called phototrophism. there are 2 types- positive phototrophism where plants grow towards light and negative phototrophism where it grows against light.
3.ethylene is simplest alkene with formula C2H4. it when polymers forms polythene. ethylene can act as plant hormone whih helps in ripening of fruits etc.
4. gravitropism where plants grow against light and towards gravity. roots are gravitropist.
2007-03-19 18:46:10 · answer #1 · answered by nan 2 · 0⤊ 0⤋
1.what is the tendency of plants to grow towards light called?
phototropism
2.what is phototropism?
the tendency of plants to grow towards light
3.what is ethylene?
Two carbon atoms double bonded together, with each carbon atom having two hydrogen atoms attached to it.
4. what is gravitropism?
the tendency of parts of plants to grow in response to gravity. For example, roots grow down, stems grow up.
2007-03-20 01:52:05 · answer #2 · answered by BP 7 · 0⤊ 0⤋
number two isthe anwer to number 1. number three i don't know, look in your book, or do a web search. and number four is a growth response involving gravity. there is a possitive gravitropism and a negative gravitropism. tropism means growth response. photo means light. gravi means dealing with gravity.
2007-03-20 01:20:47 · answer #3 · answered by Bio-student Again(aka nursegirl) 4 · 0⤊ 0⤋