All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 10 Exam  >  Class 10 Questions  >  How does phototropism occur in plants!? Start Learning for Free
SaveJoin the Discussion on the App
How does phototropism occur in plants!?
Clear all your Class 10 doubts with EduRev
Verified Answer
How does phototropism occur in plants!?
The directional movement of a plant in response to light is called phototropism. The shoot responds by bending towards light and roots respond by bending away from light.
This happens as follows:
(i) When sunlight falls straight on the plant, the auxin hormone synthesised at the tip of the stem spreads uniformly down the stem and due to equal concentration of auxin, stem grows straight.
(ii) 
When sunlight fells on only one side of the plant, the auxin diffuses towards the shady side of shoot. The concentration of auxin stimulates the cells to grow longer. Therefore, the stem appears to bend towards the source of light.



This question is part of UPSC exam. View all Class 10 courses
Most Upvoted Answer
How does phototropism occur in plants!?
Phototropism is a directional growth which occurs in response to unidirectional exposure to light. ... Due to the presence of more auxin, the part of the plant stem in the dark grows faster, causing it to bend towards the source of light.
Community Answer
How does phototropism occur in plants!?
The movement of plant or other organism in response to light is called as phototropism. The movement can be either towards the light or away from it. Stem grows in direction of the sunlight (positively phototropic) and roots grows away from it (negatively phototropic). The growth is controlled by plant hormone, auxin. The growth of the side of the shoot is stimulated by the concentration of auxin. Bending of the stem is caused by the unequal growth on the two sides of the shoot. Phototropic movement is generally caused by the increased auxin on the dark side and lesser auxin on the illuminated  side.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
Explore Courses for Class 10 exam

Top Courses for Class 10View all

Top Courses for Class 10

How does phototropism occur in plants!?
Question Description
How does phototropism occur in plants!? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about How does phototropism occur in plants!? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How does phototropism occur in plants!?.
Solutions for How does phototropism occur in plants!? in English & in Hindi are available as part of our courses for Class 10. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of How does phototropism occur in plants!? defined & explained in the simplest way possible. Besides giving the explanation of How does phototropism occur in plants!?, a detailed solution for How does phototropism occur in plants!? has been provided alongside types of How does phototropism occur in plants!? theory, EduRev gives you an ample number of questions to practice How does phototropism occur in plants!? tests, examples and also practice Class 10 tests.
Explore Courses for Class 10 exam

Top Courses for Class 10

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup