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Assertion: A typical microsporangium of angiosperms is general
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Solving time: 2 mins

Assertion: A typical microsporangium of angiosperms is generally surrounded by four wall layers.
Reason: The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen. 

A
If both Assertion and Reason are true and Reason is the correct explanation of Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C
If Assertion is true but Reason is false.

D
If both Assertion and Reason are false.

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Views: 5,826 students

Updated on: Sep 11, 2023

Book

Book:

NEET Question Bank i Biology for AIIMS (Disha)

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Assertion: A typical microsporangium of angiosperms is generally surrounded by four wall layers.
Reason: The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen. 
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Text SolutionText solutionverified iconVerified

A typical microsporangium consists of two parts, outer wall and central homogeneous sporogenous tissue. Microsporangial wall has four types of layers– epidermis, endothecium, 1–3 middle layers and tapetum. The outer three wall layers perform the function of protection in the young anther and mechanism of dehiscence in the ripe anther
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Practice questions from NEET Question Bank i Biology for AIIMS (Disha)

Question 1
Hard
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Views: 5,316

Assertion: Hydrophily is a major mode of pollination in most of the aquatic plants in angiosperms.
Reason: Almost all the aquatic dicot and monocot plants require water for the transport of male gametes and for fertilisation.
  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:

Sexual Reproduction in Flowering Plants

Book

Book:

NEET Question Bank i Biology for AIIMS (Disha)

View solution

Question 2
Easy
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Assertion: Non-albuminous seeds have no residual endosperm.
Reason: The endosperm is completely consumed during embryo development.
  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:

Sexual Reproduction in Flowering Plants

Book

Book:

NEET Question Bank i Biology for AIIMS (Disha)

View solution

Question 3
Medium
Views

Views: 6,137

Assertion: The method of development of embryo sac from a single functional megaspore is termed as monosporic development.
Reason: In monosporic type of embryo sac development, usually the megaspore which is situated towards micropylar end remains functional.
  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:

Sexual Reproduction in Flowering Plants

Book

Book:

NEET Question Bank i Biology for AIIMS (Disha)

View solution

Question 4
Medium
Views

Views: 5,668

Assertion : Endosperm is a nutritive tissue and it is triploid.
Reason : Endosperm is formed by fusion of secondary nucleus to second male gamete. It is used by developing embryo. 
  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:

Sexual Reproduction in Flowering Plants

Book

Book:

NEET Question Bank i Biology for AIIMS (Disha)

View solution

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Question 1
Medium
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The plant parts which consist of two generations-one within the other: (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovule
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Topic:

Sexual Reproduction in Flowering Plants

Book

Book:

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Question 2
Easy
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Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
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Sexual Reproduction in Flowering Plants

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Question 3
Easy
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Which statement is false:-
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  2. Androgenic plants are developed by Guha & Maheshwari
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Sexual Reproduction in Flowering Plants

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Question 4
Easy
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Views: 6,014

Microsporogenesis is a synonym for
  1. spermatogenesis
  2. development of pollen grain
  3. development of male gametophyte
  4. development of female gametophyte
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Sexual Reproduction in Flowering Plants

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Question Text
Assertion: A typical microsporangium of angiosperms is generally surrounded by four wall layers.
Reason: The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen. 
Updated OnSep 11, 2023
TopicSexual Reproduction in Flowering Plants
SubjectBiology
ClassClass 12
Answer TypeText solution:1 Video solution: 1
Upvotes250
Avg. Video Duration4 min