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प्रश्न
Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow : 
What is Thigmotropism? Give one example.
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उत्तर
Thigmotropism is a directional movement which occur as a mechanosensory response to a touch stimulus. It is typically found e.g. Touch me not plant.
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संबंधित प्रश्न
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions:
(i) Name the process intended for study.
(ii) Define the above mentioned process.
(iii) When the weight of the test tube (A & B) is taken before and after the experiment, what is observed? Give reasons to justify your observation in A & B.
(iv) What is the purpose of keeping the test tube B in the experimental setup?
The rate of photosynthesis is not affected by
Name the following:
The category of organisms that prepare their own food from basic raw materials.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
What aspect of photosynthesis was being investigated?
Explain, why respiration is said to be a reversed process of photosynthesis?
The figure given below is for performing an experiment on photosynthesis.
Answer the following:
(i) What is the aim of this experiment?
(ii) Describe an experiment to show that light is necessary for photosynthesis.
(iii) What do you conclude from this experiment?
(iv) What is the role of light in photosynthesis?
Give technical term:
Which process is the ultimate source of energy for all living organisms?
Choose the correct option.
For fixation of 6 molecules of CO2 and formation of one molecule of glucose in Calvin cycle, requires
The raw materials for photosynthesis are ______ and ______.
