हिंदी

What is meant by nastic movements in plants? Give one example of nastic movements in plants. - Science

Advertisements
Advertisements

प्रश्न

What is meant by nastic movements in plants? Give one example of nastic movements in plants.

टिप्पणी लिखिए

उत्तर

The non-directional movement of a plant part in response to an external stimulus is known as nastic movement. The folding up of leaves in sensitive plants in response to touch is an example of nastic movement.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Control and Coordination - Exercise 1 [पृष्ठ ९३]

APPEARS IN

लखमीर सिंग Biology (Science) [English] Class 10
अध्याय 2 Control and Coordination
Exercise 1 | Q 27.1 | पृष्ठ ९३

संबंधित प्रश्न

Where is the auxin hormone made in a plant stem?


Name the plant part which bends in the direction of gravity but away from light.


When the leaves of a Mimosa pudica plant are touched with a finger, they fold up quickly. This is an example of ______.


The growth of tendrils in pea plants is due to


The movement of sunflower in accordance with the path of sun is due to


The opening and closing of the Moonflower is not a tropism because the movement in this is ______.


Name the phenomenon occurring in plants which are under the control of gravity, water and chemicals with one example each that shows the movement involved.


Which parts of a plant exhibit Positive hydrotropism?


Study the diagrams given below and answer the following questions:

  1. Name the structures shown as X and Y in the figures (A) and (B), respectively.
  2. Write the functions performed by the structures X and Y.
  3. Name the phenomenon depicted and define it.
  4. How do the structures X and Y differ from each other?
  5. Give examples of the plants which show the said phenomenon.

Given below are the figures showing some kinds of tropic movements in plants. Study the same and answer the following questions:

  1. Which one of these figures is correct? Give reason in support of your answer.
  2. Name the kinds of movements shown by the root system and shoot system. Define each.
  3. What are the two stimuli which affect root system and shoot system positively? Name them.
  4. Which of the following stimuli affects the growth of the root strongly?
    1. Gravity
    2. Water
  5. Draw a neat and labelled diagram of the longitudinal section of a pistil showing chemotropism in an angiospermic plant.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×