In this article you will get the clue that from where and how the questions are being framed from the chapter Sexual Reproduction in Flowering Plants -(Class 12th Biology)
The experts of jagranjosh.com have full confidence that you will not miss any of the questions in the board exam as well as in competitive exams from this chapter if you will keep the following terms / question in your mind while studying.
• Developments of male and female gametophyte in an angiosperm flower
• Difference between microsporogenesis and megasporogenesis and the types of division involved
• Developmental sequence
• Monosporic development
• Explanation of 7-celled, 8-nucleate nature of the female gametophyte a neat diagram
• Chasmogamous and cleistogamous flowers
• Self-incompatibility, bagging technique and triple fusion?
• Name the nuclei involved in triple fusion.
• Differentiate between:
• hypocotyl and epicotyls
• coleoptiles and coleorhizae
• integument and testa
• perisperm and pericarp
Appomixis and its importance
Examples of false and true fruits
Go through the some examples given here and get the idea that what to read and how to read
1. Which one is correct for embryo sac mother cell
a) within the nucellus, there is a single cell that will give rise to the embryo sac It is called the embryo sac mother cell
b) within the nucellus, there is a group of cell that will give rise to the embryo sac It is called the embryo sac mother cell
c) within the nucleus, there is a group of cell that will give rise to the embryo sac It is called the embryo sac mother cell
d) within the nucellus, there is a single cell that will give rise to the embryo sac It is called the embryo sac mother cell
2. Double fertilization process means
a) Fusion of one male gamete nucleus with egg nucleus while fusion of other male gamete nucleus with secondary nucleus
b) fusion of male gamete nucleus with secondary nucleus
c) Fusion of two polar nuclei with each other
d) fusion of male gamete nucleus with egg nucleus
3. The sequence of development of embryo sac is
a) Archesporium > mega spore mother cell > megaspore > embryo sac
b) Archesporium > mega spore > megaspore mother cells > embryo sac
c) Archesporium > mega spore > megasporophyte > embryo sac
d) None of the above
4. Identify the most closely related terms in the given sets
a) megasporangium, megaspore, egg, ovule
b) microsporangium, microspore, egg, ovary
c) megasporangium, megaspore, pollen, ovule
d) microsporangium, microspore, carpel, ovary
5. Select the incorrect statement for polyembryony
a) The resultant offspring are genetically identical to each other but different from their mother.
b) The term `polyembryony' refers to the splitting of one sexually produced embryo into many
c) It is a sexual reproduction mimicking the asexual method
d) It is asexual reproduction mimicking the sexual method
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