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60 % of the angiosperms shed their pollens at the
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Medium
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Solving time: 3 mins

of the angiosperms shed their pollens at the

A
2-celled stage

B
3-celled stage

C
4-celled stage

D
1-celled stage

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Views: 6,095 students

Updated on: Sep 11, 2022

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Book:

CBSE New Pattern Biology Class 12 for 2021-22 Exam MCQs based book for Term 1

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Text SolutionText solutionverified iconVerified

of angiosperms shed their pollens at two-celled stage and in rest the pollens are shed at three-celled stage, which is formed by division in generative cell mitotically.
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Practice questions from CBSE New Pattern Biology Class 12 for 2021-22 Exam MCQs based book for Term 1

Question 1
Medium
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Views: 5,447

Assertion (A) Endosperm development preceds embryo development. Reason (R) It assures nutrition to the developing embryo.
  1. Both and are true and is the correct explanation of
  2. Both and are true, but is not the correct explanation of
  3. A is true, but is false
  4. is false, but is true
Topic

Topic:

Sexual Reproduction in Flowering Plants

Book

Book:

CBSE New Pattern Biology Class 12 for 2021-22 Exam MCQs based book for Term 1

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Question 2
Medium
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From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
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  2. Dioecious plant bearing only male or female flowers
  3. Monoecious plant with bisexual flowers
  4. Dioecious plant with bisexual flowers
Topic

Topic:

Sexual Reproduction in Flowering Plants

Book

Book:

CBSE New Pattern Biology Class 12 for 2021-22 Exam MCQs based book for Term 1

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Question 3
Easy
Views

Views: 5,305

In angiosperm functional megaspore develops into
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  2. ovule
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Topic

Topic:

Sexual Reproduction in Flowering Plants

Book

Book:

CBSE New Pattern Biology Class 12 for 2021-22 Exam MCQs based book for Term 1

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Question 4
Easy
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In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be
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  2. diploid
  3. a few haploid and a few diploid
  4. with varying ploidy
Topic

Topic:

Sexual Reproduction in Flowering Plants

Book

Book:

CBSE New Pattern Biology Class 12 for 2021-22 Exam MCQs based book for Term 1

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Question 1
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Identify A, B, C, D and E structures shown in figure of a female gametophyte-
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Question 2
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Write down the names of post fertilization events in flowering plants. Describe the process of embryo development in dicot.
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Question 3
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If meiosis occurs inside pollen grain and egg nuclei, it will be
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Sexual Reproduction in Flowering Plants

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Question 4
Easy
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Which of the following is not true for double fertilization?
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Sexual Reproduction in Flowering Plants

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Sexual Reproduction in Flowering Plants: Pre-Fertilisation Events and Fertilisation 29 It helps in the production of megaspores, fruits and seeds. CHECK POINT 2.1
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Question Text
of the angiosperms shed their pollens at the
Updated OnSep 11, 2022
TopicSexual Reproduction in Flowering Plants
SubjectBiology
ClassClass 12
Answer TypeText solution:1 Video solution: 1
Upvotes210
Avg. Video Duration3 min