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Question 20: (a) What does a stem (or shoot) do in response to
Biology by Lakhmir Singh
Biology

Class 10

Lakhmir Singh

Author:
Lakhmir Singh
Publisher:
S. Chand
Subject:
Science
1

Chapter 1: Life Processes

281 questions

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2

Chapter 2: Control and Coordination

182 questions

Q1
Question 19: (a) What does a root do in response to gravity? What is this phenomenon known as?
(b) What does a stem (or shoot) do in response to light? What is this phenomenon known as?
Q2
Question 20: (a) What does a stem (or shoot) do in response to gravity? What is this phenomenon known as?
(b) What does a root do in response to light? What is this phenomenon known as?
Q3
Question 21: (a) What does a Mimosa pudica plant do in response to touch? What is this phenomenon known as?
(b) What happens to the dandelion flower (i) during daytime, and (ii) at night? What is this phenomenon known as?
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3

Chapter 3: How do Organism Reproduce?

183 questions

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4

Chapter 4: Heredity and Evolution

150 questions

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5

Chapter 5: Our Environment

141 questions

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6

Chapter 6: Management of Natural Resources

70 questions

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Question

Question 20: (a) What does a stem (or shoot) do in response to gravity? What is this phenomenon known as?
(b) What does a root do in response to light? What is this phenomenon known as?

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Biology (Lakhmir Singh)

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Question 20: (a) What does a stem (or shoot) do in response to gravity? What is this phenomenon known as?
(b) What does a root do in response to light? What is this phenomenon known as?
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Answer: (a) Stem always grows up and away from the pull of gravity. This phenomenon is known as negative geotropism.
(b) Root always grows downwards and away from light. This phenomenon is known as negative phototropism.
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Question 19: (a) What does a root do in response to gravity? What is this phenomenon known as?
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Question Text
Question 20: (a) What does a stem (or shoot) do in response to gravity? What is this phenomenon known as?
(b) What does a root do in response to light? What is this phenomenon known as?
TopicControl and Coordination
SubjectScience
ClassClass 10
Answer TypeText solution:1
Upvotes6