Advertisements
Advertisements
प्रश्न
What is chlorophyll?
उत्तर
Green pigments present in leaves.
APPEARS IN
संबंधित प्रश्न
What is the scientific name of sensitive plant?
The response of leaves to the sunlight is called ______.
What is meant by positive tropism and negative tropism? Explain with examples.
A potted plant having straight parts A and B was placed horizontally on its side as shown in Figure (i). After a few days, it was observed that parts A and B of the plant acquired new positions as shown in Figure (ii).
- Name the phenomenon exhibited by the position of plant parts A and B in Figure (ii).
- Name the stimulus (other than sunlight) which causes plant part A to grow and bend upwards, and plant part B to bend downwards.
Higher Order Thinking Skill.
There are 3 plants A, B and C. The flowers of A open their petals in bright light during the day but closes when it gets dark at night. On the other hand, the flowers of plant B open their petals at night but closes during the day when there is bright light. The leaves of plant C fold up and droop when touched with fingers or any other solid object.
- Name the phenomenon shown by the flowers of plant A and B.
- Name one plant each which behaves like the flowers of plant A and B.
- Name the phenomenon exhibited by the leaves of plant C.
- Name the plant which behaves like the leaves of plant 'C'?
Give an example of negative hydrotropism.
The height of a plant is regulated by ______.
The leaves of the 'chhui-mui' plant begin to fold up and droop in response to a stimulus. Name the stimulus and write the cause for such a rapid movement. Is there any growth involved in the movement?
The growth movement of plant parts which occurs due to touch stimulus is called ______.
Name the stimulus which causes the following movement in plant:
phototropism
