CBSE Class 12 Biology Sexual Reproduction In Flowering Plants Worksheet Set 05

Practice Worksheets for Class 12 Biology: Chapter 01 Sexual Reproduction In Flowering Plants

Explore reliable practice materials for Chapter 01 Sexual Reproduction In Flowering Plants tailored for Class 12 learners. Utilizing these Biology worksheets ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.

Practice Chapter 01 Sexual Reproduction In Flowering Plants Worksheets for Class 12 Biology

Access the complete worksheet PDF for Chapter 01 Sexual Reproduction In Flowering Plants below. Regular practice with these targeted questions builds familiarity with standard exam patterns and helps secure higher marks in final Biology evaluations.

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]

 

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Exam Preparation Worksheet for Class 12 Biology Chapter 01 Sexual Reproduction In Flowering Plants

CBSE Practice Material: Class 12 Biology Chapter 01 Sexual Reproduction In Flowering Plants

Access structured practice worksheets for Chapter 01 Sexual Reproduction In Flowering Plants designed in alignment with the latest CBSE curriculum for Class 12 Biology. These printable problem sets help students build accuracy and prepare effectively for school tests.

NCERT-Aligned Questions and Solutions

Each worksheet is structured around standard CBSE textbooks, allowing students to check their working steps and correct mistakes early in their revision.

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