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प्रश्न
Give the scientific terms used to represent the Winding of tendril around a support.
उत्तर
Thigmotropism
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संबंधित प्रश्न
Where is the auxin hormone made in a plant stem?
What is the stimulus in chemotropism?
Which of the following are not tropisms?
(i) growing of pollen tube in response to a sugary substance
(ii) folding up of leaves of sensitive plant in response to touch
(iii) winding of tendril around a support in response to touch
(iv) opening up of the leaves of a daisy flower in response to light
(a) (i) and (ii) (b) (ii) and (iii) (c) (i) and (iv) (d) (ii) and (iv)
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?
What is meant by positive and negative tropic movements in plants? Explain them by giving suitable examples.
The plant part which exhibits negative geotropism is ______.
Observe the three figures given below. Which of the following depicts tropic movements appropriately?
 |
 |
 |
| A | B | C |
Name the following:
The tropic movement of plant parts in response to chemicals.
Arrange and rewrite the terms in the group in the correct order so as to be in a logical sequence, beginning with the term that is underlined.
Apical meristem, Positive phototropism, Auxins, Cell elongation.
Differentiate between:
Positive and negative tropism
