Advertisements
Advertisements
प्रश्न
Answer the following question.
What is tropism?
उत्तर
A growing movement of a plant in response to the external stimulus in which the direction of stimulus determines the direction of response is called tropism.
APPEARS IN
संबंधित प्रश्न
What is the stimulus in geotropism?
Plant parts show two types of movements, one dependent on growth and other independent of growth. Give one example which does not depend on growth
What is the difference between photonasty and thigmonasty?
Which of the following is a growth movement and which is not?
- Folding up of leaves of sensitive plant on touching with hand.
- Folding up of petals of dandelion flower when light fades.
Define geotropism.
What is meant by ‘positive geotropism’ and ‘negative geotropism’? Give one example of each type. Draw a labelled diagram to illustrate your answer, indicating the plant part, which shows positive geotropism, and the plant part, which shows negative geotropism.
Name one plant part which exhibits positive thigmotropism.
The response of a plant part towards gravity is ______.
Differentiate phototropism from photonasty.
Chlorophyll differs from hemoglobin by the presence of its central molecule ______.
