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Index: Sexual Reproduction in Flowering Plants | Biology for Grade 12 PDF Download

Botany Chapter “Sexual Reproduction in Flowering Plants” has a 5% Weightage in NEET Exam from 2000 to 2021. Here is the list of the Important topics from this chapter:

1. Pre-Fertilization- Structure and Events 

2. Post-Fertilization-Structure and Events 

3. Double Fertilization 

4. Apomixis and polyembryony

 The following chart shows the topic-wise weightage of "Reproduction in Organisms"  in the NEET exam:    

Index: Sexual Reproduction in Flowering Plants | Biology for Grade 12

(a) Flower- A Fascinating Organ of Angiosperms

(b) Pre-fertilisation: Structures and Events

(c) Double Fertilisation

(d) Post-fertilisation: Structures and Events

(e) Apomixis and Polyembryony

(f) Past Year Questions

(g) NCERT Textbook and Solution

(h) Tests, Question Doc and Summary 

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FAQs on Index: Sexual Reproduction in Flowering Plants - Biology for Grade 12

1. What is sexual reproduction in flowering plants?
Ans. Sexual reproduction in flowering plants is the process by which new plants are produced through the fusion of male and female gametes. It involves the transfer of pollen from the male reproductive organ (stamen) to the female reproductive organ (pistil), leading to fertilization and the formation of seeds.
2. How do flowering plants reproduce sexually?
Ans. Flowering plants reproduce sexually through a process called pollination. Pollination occurs when pollen grains from the stamen (male reproductive organ) are transferred to the stigma (part of the pistil, female reproductive organ) of the same or a different plant. Once the pollen grain reaches the stigma, it germinates, and a pollen tube grows down to the ovary, where fertilization takes place.
3. What are the advantages of sexual reproduction in flowering plants?
Ans. Sexual reproduction in flowering plants offers several advantages. It increases genetic diversity, as the combination of genetic material from two parent plants leads to the creation of offspring with unique traits. This diversity enhances the plant's ability to adapt to changing environmental conditions and increases its chances of survival. Additionally, sexual reproduction allows for the exchange of genetic material, which can lead to the elimination of harmful mutations and the improvement of overall plant health.
4. What are the different methods of pollination in flowering plants?
Ans. There are two main methods of pollination in flowering plants: 1. Self-pollination: In this method, pollen from the stamen is transferred to the stigma of the same flower or a different flower on the same plant. It ensures fertilization and seed production without the need for external agents. 2. Cross-pollination: This method involves the transfer of pollen from the stamen of one flower to the stigma of a different flower, typically on another plant of the same species. Cross-pollination helps promote genetic diversity and reduces the risk of inbreeding.
5. How do animals contribute to the process of pollination in flowering plants?
Ans. Animals, particularly insects, birds, and mammals, play a crucial role in pollination. As they visit flowers in search of nectar or pollen, they inadvertently pick up pollen grains on their bodies and transfer them to other flowers they visit. This process, known as animal-mediated or zoophilous pollination, allows for the transfer of pollen over longer distances, increasing the chances of fertilization. Different animals have different preferences for flower shape, size, color, and scent, which influences the specific plants they pollinate.
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