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Select the correct events leading to the opening of the stomat
Precalculus 10 by Michael Sullivan
Precalculus 10 Edition
Author:
Michael Sullivan
Edition:
10
ISBN:
9780321979070
Publisher:
PEARSON
Subject:
Pre-Calculus
Question
Hard
Timing Icon

Solving time: 2 mins

Select the correct events leading to the opening of the stomata:
(i) Decline in guard cell solutes
(ii) Lowering of csmotic potential of guard cells
(iii) Rise in potassium levels in guard cells
(iv) Movement of water from neighbouring cells into guard cells
(v) Guard cells becoming flaccid

A
0

B
(ii), (iii) and (iv) only

C
(i), (iii) and (iv) only

D
(ii), (iv) and (v) only

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Views: 6,026 students

Updated on: Jun 8, 2022

Book

Book:

Precalculus

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Charlotte Discussed
Select the correct events leading to the opening of the stomata:
(i) Decline in guard cell solutes
(ii) Lowering of csmotic potential of guard cells
(iii) Rise in potassium levels in guard cells
(iv) Movement of water from neighbouring cells into guard cells
(v) Guard cells becoming flaccid
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Correct answer is B
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Practice questions from Precalculus

Question 1
Easy
Views

Views: 6,139

Stomata open during day time because the guard cells:
  1. Photosynthesize and produce osmotically active sugars or organic acids
  2. Are thin-walled
  3. Are bean shaped
  4. Have to help in gaseous exchange
Topic

Topic:

Transport in Plants

Book

Book:

Precalculus

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Question 2
Easy
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Exchange of substances between individual cells and their environments takes place by :
  1. Osmosis
  2. Diffusion
  3. Active transport
  4. All of these
Topic

Topic:

Transport in Plants

Book

Book:

Precalculus

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Question 3
Easy
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Which one of the following is not related to guttation?
  1. Water is given out in the form of droplets
  2. Water given out is impure
  3. Water is given out early morning
  4. Guttation is of universal occurrence
Topic

Topic:

Transport in Plants

Book

Book:

Precalculus

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Question 4
Easy
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Views: 6,259

Conversion of starch to organic acid is essential for:
  1. Stomatal closure
  2. Stomatal opening
  3. Stomatal initiation
  4. Stomatal growth
Topic

Topic:

Transport in Plants

Book

Book:

Precalculus

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Phenomenon of plasmolysis occurs when
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  2. cells are kept in hypotonic solution.
  3. cells are kept in hypotonic solution.
  4. none of the above.
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Question 3
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Assertion: In hypertonic solution, a plant cell shrinks.
Reason: Due to plasmolysis in hypertonic solution, water moves out of the cells.
  1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. If Assertion is true but Reason is false.
  4. If both Assertion and Reason are false.
Topic

Topic:

Transport in Plants

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Question 4
Easy
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When a root absorbs minerals from a region of lower concentration to a region of higher concentration, and need energy then this type of absorption is called
  1. passive absorption
  2. facilitated diffusion
  3. active absorption
  4. osmosis
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Transport in Plants

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Question Text
Select the correct events leading to the opening of the stomata:
(i) Decline in guard cell solutes
(ii) Lowering of csmotic potential of guard cells
(iii) Rise in potassium levels in guard cells
(iv) Movement of water from neighbouring cells into guard cells
(v) Guard cells becoming flaccid
Updated OnJun 8, 2022
TopicTransport in Plants
SubjectBiology
ClassClass 11
Answer TypeText solution:1 Video solution: 4
Upvotes398
Avg. Video Duration11 min