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Identify the type of molecular movement which is highly select
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Identify the type of molecular movement which is highly selective and requires special membrane proteins but does not require energy.

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Modern ABC Biology Class 11 Part 2 (Modern ABC)

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. Facilitated diffusion is the type of molecular movement that occurs across a membrane in which certain molecules are carried by certain membrane proteins (carrier, gated channel, channel proteins) . The movement of molecules is therefore highly selective.
. The movement of molecules takes place down the concentration gradient i.e. from higher concentration to lower concentration.
. Thus, it does not require energy
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Practice questions from Modern ABC Biology Class 11 Part 2 (Modern ABC)

Question 1
Easy
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Root hairs develop from the region of:
  1. Elongation
  2. Root cap
  3. Meristematic activity
  4. Maturation.
Topic

Topic:

Transport in Plants

Book

Book:

Modern ABC Biology Class 11 Part 2 (Modern ABC)

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Question 2
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Suggest two types of treatment for reducing transpiration in plants in a field.
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Transport in Plants

Book

Book:

Modern ABC Biology Class 11 Part 2 (Modern ABC)

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Question 3
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What are antitranspirants ?
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Transport in Plants

Book

Book:

Modern ABC Biology Class 11 Part 2 (Modern ABC)

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Wilting in plant occurs due to :
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Topic

Topic:

Transport in Plants

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Book:

Modern ABC Biology Class 11 Part 2 (Modern ABC)

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Practice more questions from Transport in Plants

Question 1
Hard
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Assertion : Waxy and cutin coating on plant parts reduce the transpiration.
Reason : These adaptations are found in xerophytes.
  1. If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  2. If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  3. If the Assertion is correct but Reason is incorrect.
  4. If both the Assertion and Reason are incorrect.
Topic

Topic:

Transport in Plants

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Question 2
Medium
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Choose true and false statements from the following.
I. Mycorrhizal association between fungus and root of plant (Pinus) is often obligate.
II. Pinus and orchid seeds can germinate and grow into a plant in the absence of mycorrhizal association.
III. Absorption of water along with mineral solutes by root hairs is purely a process of diffusion.
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V. Fungal hyphae provides sugar and organic material to the root.
Choose the correct option
  1. I, II and III are true while IV and V are false
  2. IV, and V are true while I, II and III are false
  3. I and IV are true
  4. I, II and V are true
Topic

Topic:

Transport in Plants

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Question 3
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In which of the following plants, there will be no transpiration?
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  2. Plants living in deserts
  3. Aquatic plants with floating leaves
  4. Plants growing in hilly regions
Topic

Topic:

Transport in Plants

Book

Book:

Modern ABC Biology Class 11 Part 2 (Modern ABC)

View solution

Question 4
Medium
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Assertion : Guttation takes place through hydathodes.
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  2. If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
  3. If Assertion is true but Reason is false.
  4. If both Assertion and Reason are false.
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Transport in Plants

Book

Book:

Modern ABC Biology Class 11 Part 2 (Modern ABC)

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Question Text
Identify the type of molecular movement which is highly selective and requires special membrane proteins but does not require energy.
TopicTransport in Plants
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes51