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Gravitropism (also known as geotropism) is a turning or growth movement by a plant or fungus in response to gravity. It is a general feature of all higher and many lower plants as well as other organisms. Wikipedia
negative gravitropism
Tiger lilies have long, narrow and iso-bilateral type of leaves with parallel venation. That is a typical monocotyledonous kind of leaves.
Cacti have needles (spines) instead of leaves.
Determinate growth occurs when leaves and flowers grow to a set size.
positive gravitropism
Stimulus is any kind of change in substances or in happenings, occurs in the surrounding of a living thing that bring about any kind of response from it.Tropism is the way by which plants respond to the stimuli. These kind of plant responses are either MOVEMENTS OR GROWTH of plat parts in particular directions.For Eg:-1. Leaves of 'touch me not plant' folds its leaves on our touch.2. plant roots grows towards the direction water availability.
Gravitropism (also known as geotropism) is a turning or growth movement by a plant or fungus in response to gravity. It is a general feature of all higher and many lower plants as well as other organisms. Wikipedia
Geotropism
Iris grows towards the light. That is phototropism.
negative gravitropism
mimosa pudica is a thigmotropism as it responds to touch :)
It is a tropism, specifically phototropism.
They exhibit bilateral symmetry.
Regular rhythm.
The good kind! Dark green leaves..
description of the leaves