b)Seismonastic movement is the types of movements and responses that are shown by the plants when they receive stimulus. The stimulus could be electrical, pressure, chemical, heat, touch, etc. When they experience stimulus, they move away from the stimulus source.
c)c)It is a type of tropism where plants show some growth in response to gravity. Stems are negative to the gravitropism while roots are positive to the gravitropism. This is also referred to as geotropism. Among different parts of plants, the primary roots and certain other portions of the root system show positive geotropism by growing directly towards the centre of gravity. The stems are called as the negatively geotropic as they grow away from the centre of gravity. The leaves are transversely geotropic as they select their positions at right angles to the centre of gravity.
(I) The type of movements shown in figure A- Geotropism and in figure B - Phototropism
ii) As there is no growth is involved in the movement of Mimosa, this movement is known as movement independent of growth, as there is growth is involved in both geotropism and phototropism, these two movements are known as movement dependent on growth.
Answers & Comments
a)Seismonastic movement
b)Seismonastic movement is the types of movements and responses that are shown by the plants when they receive stimulus. The stimulus could be electrical, pressure, chemical, heat, touch, etc. When they experience stimulus, they move away from the stimulus source.
c)c)It is a type of tropism where plants show some growth in response to gravity. Stems are negative to the gravitropism while roots are positive to the gravitropism. This is also referred to as geotropism. Among different parts of plants, the primary roots and certain other portions of the root system show positive geotropism by growing directly towards the centre of gravity. The stems are called as the negatively geotropic as they grow away from the centre of gravity. The leaves are transversely geotropic as they select their positions at right angles to the centre of gravity.
Hope it helps
Answer:
(I) The type of movements shown in figure A- Geotropism and in figure B - Phototropism
ii) As there is no growth is involved in the movement of Mimosa, this movement is known as movement independent of growth, as there is growth is involved in both geotropism and phototropism, these two movements are known as movement dependent on growth.