Advertisements
Advertisements
प्रश्न
Which of the following plant part exhibits negative phototropism?
(a) root
(b) branch
(c) leaves
(d) stem
उत्तर
(a) Root
Roots bend away from the light source and show negative phototropism.
APPEARS IN
संबंधित प्रश्न
Give one example of a plant part which is positively phototropic but negatively geotropic.
Name the plant organ which is positively geotropic
The growth movement of a plant part in response to the touch of an object is called :
(a) thigmonasty
(b) hydrotropism
(c) thigmotropism
(d) geotropism
The response of a plant part towards gravity is ______.
State whether true or false. If false, correct the statement.
The response of a part of plant to the chemical stimulus is called phototropism.
Roots of plants are:
The petals of the moon flower open up in the morning and close in the evening. This is called photo nasty.
The height of a plant is regulated by ______.
Which parts of a plant exhibit Negative geotropism?
Study the diagrams given below and answer the following questions:
- Name the structures shown as X and Y in the figures (A) and (B), respectively.
- Write the functions performed by the structures X and Y.
- Name the phenomenon depicted and define it.
- How do the structures X and Y differ from each other?
- Give examples of the plants which show the said phenomenon.
