CBSE Class 12 Biology Sexual Reproduction In Flowering Plants Worksheet Set E

Access the latest CBSE Class 12 Biology Sexual Reproduction In Flowering Plants Worksheet Set E. We have provided free printable Class 12 Biology worksheets in PDF format, specifically designed for Chapter 1 Sexual Reproduction In Flowering Plants. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Chapter 1 Sexual Reproduction In Flowering Plants Biology Practice Worksheet for Class 12

Students should use these Class 12 Biology chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Chapter 1 Sexual Reproduction In Flowering Plants, to help you prepare for school tests and final examination. Regular practice of these Class 12 Biology questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

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Sexual Reproduction in Flowering Plants
 
1. How many microspore mother cells are required to produce 1000 microspores/pollen grains?
(a) 100
(b) 150
(c) 200
(d) 250
 
2. Which of the following represents the female gametophyte in angiosperms?
(a) Embryo
(b) Embryo sac
(c) Synergid
(d) Endosperm
 
3. In a breeding experiment, the selected male parent is diploid and the female parent is tetraploid. What will be the ploidy level of the endosperm that will develop after double fertilisation?
(a) Diploid
(b) Triploid
(c) Tetraploid
(d) Pentaploi
 
4. The development of fruits without fertilisation of the ovary, is called
(a) parthenogenesis
(b) parthenocarpy
(c) agamospermy
(d) apomixis
 
5. When the pollen of a flower is transferred to the stigma of another flower on the same plant, the process is known as
(a) autogamy
(b) geitonogamy
(c) xenogamy
(d) cleistogamy
 
6. The number of meiotic divisions, required to produce 400 seeds in a pea plant, is
(a) 100
(b) 200
(c) 400
(d) 500
 
7. A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is [NCERT Exemplar]
(a) plant is dioecious and bears only pistillate flowers.
(b) plant is dioecious and bears both pistillate and staminate flowers.
(c) plant is monoecious.
(d) plant is dioecious and bears only staminate flowers.
 
8. Autogamy can occur in a chasmogamous flower if [NCERT Exemplar]
(a) pollen matures before maturity of ovule.
(b) ovules mature before maturity of pollen.
(c) both pollen and ovules mature simultaneously.
(d) both anther and stigma are of equal lengths.
 
9. Choose the correct statement from the following. [NCERT Exemplar]
(a) Cleistogamous flowers always exhibit autogamy.
(b) Chasmogamous flowers always exhibit geitonogamy.
(c) Cleistogamous flowers exhibit both autogamy and geitonogamy.
(d) Chasmogamous flowers never exhibit autogamy.
 
10. From among the situations given below, choose the one that prevents both autogamy and geitonogamy. [NCERT Exemplar]
(a) Monoecious plant bearing unisexual flowers.
(b) Dioecious plant bearing only male or female flowers.
(c) Monoecious plant with bisexual flowers.
(d) Dioecious plant with bisexual flowers.
 
11. In a fertilised embryo sac, the haploid, diploid and triploid structures are: [NCERT Exemplar]
(a) Synergid, zygote and primary endosperm nucleus.
(b) Synergid, antipodal and polar nuclei.
(c) Antipodal, synergid and primary endosperm nucleus.
(d) Synergid, polar nuclei and zygote.
 
12. In an embryo sac, the cells that degenerate after fertilisation are: [NCERT Exemplar]
(a) Synergids and primary endosperm cell.
(b) Synergids and antipodals.
(c) Antipodals and primary endosperm cell.
(d) Egg and antipodals.
 
13. Which of the following floral parts forms the pericarp after fertilisation?
(a) Nucellus
(b) Outer integument
(c) Ovary wall
(d) Inner integument
 
14. The stalk of the ovule is called _____ .
 
15. The outer integument of the ovule develops into _____ after fertilisation.
 
16. The exine of pollen grains is made up of ______ .
 
17. The outermost layer of endosperm in a maize grain is known as ______ .
 
18. A bisexual flower that never opens, is called ______ .
 
19. In the grass family, the single cotyledon is called ______ .
 
20. The hollow foliar structure that encloses the leaf primordia in a grass embryo, is called ______ .
 
21. In apple, the ______ also contributes to fruit formation and becomes edible.
 
22. Occurrence of more than one embryo in a seed, is known as ______ .
 
23. Dehydration and _____ of mature seeds are crucial for storage of seeds.
 
24. Match the terms in Column I with the descriptions in Column II.
 
Column I                                      Column II
A. Pericarp                                1. Cotyledon in the seeds of grasses.
B. Pollen grains of Vallisneria      2. Remains of nucellus in a seed.
C. Perisperm                             3. Mucilaginous covering.
D. Scutellum                             4. Wall of the true fruit.
 
25. Match the terms in Column I with the descriptions in Column II.
 
Column I                             Column II
A. Syncarpous ovary    1. Occurrence of more than one embryo in a seed.
B. Polyembryony         2. Carpels in a flower are fused together.
C. Apomixis                3. Removal of Stamens from the bisexual flower bud.
D. Emasculation          4. Formation of seeds without fertilisation.
                                 5. Development of ovary into fruit without fertilisation.
 
26. Sepals and petals orperianth are inconspicuous in entomophilous flowers. [True/False]
 
27. In Zostera, the pollen grains are long and ribbon-like and released inside the water. [True/False]
 
28. Embryo sac → Nucellus → Integuments, is the correct sequence of parts in the ovule of an angiosperms. [True/False]
 
29. Conidia are formed endogenously while zoospores are formed endogenously. [True/False]
 
30. Meiosis does not occur in the organisms showing haplontic life cycle. [True/False]
 
Directions (Q31 to Q35): Mark the odd one in each of the following groups.
 
31. Antipodal cells, Synergids, Zygote, Female gamete
 
32. Zygote, Endosperm, Embryo, Persperm
 
33. Radicle, Plumule, Endosperm, Scutellum
 
34. Mango, Apple, Strawberry, Cashew
 
35. Epidermis, Endothecium, Middle layers, Sporogenous tissue.
 
36. How many microsporangia are present in a typical anther of an ar.giosperm? [Foreign 2013]

 

Please click on below link to download CBSE Class 12 Biology Sexual Reproduction In Flowering Plants Worksheet Set E

Chapter 1 Sexual Reproduction In Flowering Plants CBSE Class 12 Biology Worksheet

Students can use the Chapter 1 Sexual Reproduction In Flowering Plants practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 12 Biology. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Chapter 1 Sexual Reproduction In Flowering Plants

Our expert team has used the official NCERT book for Class 12 Biology to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Biology. You can get all this study material for free on studiestoday.com.

Extra Practice for Biology

To get the best results in Class 12, students should try the Biology MCQ Test for this chapter. We have also provided printable assignments for Class 12 Biology on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

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