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Revision Notes for Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants
Class 12 Biology students should refer to the following concepts and notes for Chapter 2 Sexual Reproduction In Flowering Plants in Class 12. These exam notes for Class 12 Biology will be very useful for upcoming class tests and examinations and help you to score good marks
Chapter 2 Sexual Reproduction In Flowering Plants Notes Class 12 Biology
Important Questions for NCERT Class 12 Biology Sexual Reproduction in Flowering Plants
Ques. The role of double fertilisation in angiosperms is to produce
(a) cotyledons
(b) endocarp
(c) endosperm
(d) integuments.
Answer: C
Ques. Double fertilisation is characteristic of
(a) angiosperms
(b) anatropous
(c) gymnosperms
(d) bryophytes.
Answer: A
Ques. Double fertilisation is fusion of
(a) two eggs
(b) two eggs and polar nuclei with pollen nuclei
(c) one male gamete with egg and other with synergid
(d) one male gamete with egg and other with secondary nucleus.
Answer: D
Ques. Syngamy means
(a) fusion of gametes
(b) fusion of cytoplasms
(c) fusion of two similar spores
(d) fusion of two dissimilar spores.
Answer: A
Ques. Which of the following pair have haploid structures?
(a) Nucellus and antipodal cells
(b) Antipodal cells and egg cell
(c) Antipodal cells and megaspore mother cell
(d) Nucellus and primary endosperm nucleus
Answer: B
Ques. Double fertilisation and triple fusion were discovered by
(a) Hofmeister
(b) Nawaschin and Guignard
(c) Leeuwenhoek
(d) Strasburger.
Answer: B
Ques. Persistent nucellus in the seed is known as
(a) tegmen
(b) chalaza
(c) perisperm
(d) hilum.
Answer: C
Ques. Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect?
(a) Ovules develop into embryo sac.
(b) Ovary develops into fruit.
(c) Zygote develops into embryo.
(d) Central cell develops into endosperm.
Answer: A
Ques. The coconut water from tender coconut represents
(a) free nuclear proembryo
(b) free nuclear endosperm
(c) endocarp
(d) fleshy mesocarp.
Answer: B
Ques. Coconut water from a tender coconut is
(a) innermost layers of the seed coat
(b) degenerated nucellus
(c) immature embryo
(d) free nuclear endosperm.
Answer: D
Ques. Which one of the following fruits is parthenocarpic?
(a) Jackfruit
(b) Banana
(c) Brinjal
(d) Apple
Answer: B
Ques. Non-albuminous seed is produced in
(a) maize
(b) castor
(c) wheat
(d) pea.
Answer: D
Ques. Seed coat is not thin, membranous in
(a) groundnut
(b) gram
(c) maize
(d) coconut.
Answer: D
Ques. Perisperm differs from endosperm in
(a) being a diploid tissue
(b) its formation by fusion of secondary nucleus with several sperms
(c) being a haploid tissue
(d) having no reserve food.
Answer: A
Ques. Albuminous seeds store their reserve food mainly in
(a) endosperm
(b) cotyledons
(c) hypocotyl
(d) perisperm.
Answer: A
Ques. The viability of seeds is tested by
(a) 2, 6 dichlorophenol indophenol
(b) 2, 3, 5 triphenyl tetrazolium chloride
(c) DMSO
(d) Safranine.
Answer: B
Ques. Two plants can be conclusively said to belong to the same species if they
(a) have more than 90 percent similar genes
(b) look similar and possess identical secondary metabolites
(c) have same number of chromosomes
(d) can reproduce freely with each other and form seeds.
Answer: A
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CBSE Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Notes
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Notes for CBSE Biology Class 12 Chapter 2 Sexual Reproduction In Flowering Plants
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