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प्रश्न
What does a tendril do in response to the touch of a support? What is this phenomenon known as?
उत्तर
Tendrils grow towards a support in response to their touch. This phenomenon is known as thigmotropism.
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संबंधित प्रश्न
What is the stimulus in geotropism?
What does a root do in response to gravity? What is this phenomenon known as?
What is a tendril?
Give one example of a plant part which is positively phototropic but negatively geotropic.
Which of the following plant part exhibits negative phototropism?
(a) root
(b) branch
(c) leaves
(d) stem
The top part A of the flask-shaped reproductive organ X in the flower of a plant secrets a surgery substance into its lower part B which goes towards the bottom part C of the flask-shaped organ. When a tiny grain D coming from the top part E of another reproductive organ Y i the flower falls on part A, it grows a long tube F through the organ X i response to the sugary substance and reaches the bottom part C of flask-shaped organ to carry out fertilisation.
(a) Name parts (i) organ X, and (ii) organ Y, inside the flower?
(b) Name parts (i) A (ii) B, and (iii) C, of flask-shaped organ.
(c) Name (i) grain D, and (ii) part E of organ Y.
(d) Name the tube F.
(e) What is the phenomenon of growing a long tube in response to sugary substance in the process of fertilisation in a flower known as?
Heliotropism is a kind of ______.
Give an example of chemotropism.
Why do stems show positive phototropism?
Observe the three figures given below. Which of the following depicts tropic movements appropriately?
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 |
 |
| A | B | C |
