Sexual Reproduction in Flowering Plants Class 12 Solved Questions PDF Download
Sexual reproduction in flowering plants is the most important part of life cycle of plants. Here we are going to discuss about the sexual reproduction in flowering plants class 12 important questions which are asked in various competitive exams. These sexual reproduction in flowering plants class 12 mcqs are compiled from NEET, AIIMS and JIPMER previous years question paper and NCERT. Let’s discuss about the Sexual Reproduction in Flowering Plants Class 12 Quizes.
Corn cob tussles are made up of
How many nucleus are present in the mature female gametophyte.
An economically important process in which seedless fruits are formed without fertilisation is by
Pollen grains are stored in
The technique of preserving pollen grains is by
Which among the following is not a False fruit.
A genetic mechanism to prevent self pollen from same flower or other flowers of same plant is by which of the following out breeding devices in plants
Answer: Self incompatability
An example for non albuminous seed is—-
Production of seeds without fertilisation is called as
The filiform apparatus that guide the entry of pollen tube into the ovule is present in
Residual persistent nucleus
Fusion of male and female gamete is called as
The nutrition for developing pollen grains is obtained from
In female reproductive structure ovule how many megaspores are functional.
Apple is an example of —fruit
The resistant material present in the outer layer of pollen grains are made up of
Which seed has a viability of 10,000 yrs.
Microspore development occurs within
Name a flower pollinated by bird.
The removal of anthers from female flower in artificial hybridisation is called as
Name the type of pollination in which genetically different types of pollen grains of the same species land on the stigma.
Name the type of tissue present in the fertilised ovules of an Angiospermic plants that supplies food and nourishment to the developing embryo is
Flowers with both androecium and gynoecium are called
The transfer of pollen from the anther to stigma is called
The fusion of female reproductive nucleus with the male reproductive nucleus is known as
The two nuclei at the end of the pollen tube are called
Answer: Tube nucleus and a generative nucleus
Generative nucleus divides forming
Embryo sac is located inside the
One nucleus of the pollen tube and secondary nucleus of the ovum grow into
Functional megaspore in an angiosperm develops into
Rewards and attractants are required for
A dioecious flowering plant prevents
Answer: Autogamy and geitonogamy
Testa of a seed is produced from
Answer: outer integument of ovule
Endosperm is formed during the double fertilization by
Answer: two polar nuclei and one male gamete
One advantage of cleistogamy is
Answer: seed set is not dependent on pollinators
Pollen grains are shed at which stage?
Answer: Usually at two celled, but sometimes three celled
Filiform apparatus is characteristic of
An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
The egg apparatus of angiosperm comprises
Answer: an egg cell and two synergids
The diatomaceous earth of tertiary deposits found in California is
Answer: Over 1000 feet thick
Answer: fossil pteridophyte
Which is known as fossil bryophyte?
Answer: Naiadita lanceolata
Litmus is a dye obtained which lichen?
Infoldings produced by cytoplasmic membranes seen in bacteria are called
Which among the following is not a prophylactic method?
The first virus demonstrated to cause cancer is
Answer: Rous sarcoma virus
Labellum in Orchidaceae comes to anterior side by the twisting of the ovary through 180 degree. This process is called
Which of the following region has maximum diversity?
Bioinformatics tool CLUSTAL is a
Answer: Computer program series widely used for multiple sequence alignment
Which of the following is considered as a noncovalent bond?
Techniques that can be used to elucidate information about protein shape are
Which among the following is not a plant fossil?
Formation of microspores from a Pollen Mother cell through meiosis is known as
The process of transfer of pollen grains from anther to stigma of another flower of the same plant is called
Removal of anthers from flower bud before the anther dehisces for plant breeding is known as
Inactive state of an embryo (seed)
Most resistant organic material of exine
Flowers which do not open at all
Cotyledon of grass family situated towards one sided of embryonic axis
Fusion of male gamete with polar nuclei of embryosac is known as
Study the following statements and select the correct one.
A. Tapetum nourishes the developing pollen grains
B. Hilum represents the junction between ovule and funicle
C. In aquatic plants such as water hyacinth and water lily, pollination occurs by water.
D. The primary endosperm nucleus is triploid.
Answer: A, B and D are correct but C is incorrect
The entry of pollen tube into the ovule through micropyle is called
Jurassic period is about
Answer: 165 million years back
To which one of the following the genus Williamsonia belongs?
The pollen-bearing organs of Lyginopteris belong to
‘Fossil beehives’ is the name associated with fossil
The leaves of Zygopteridaceae belong to the genus
Nipaniophyllum belongs to
Baragwanathia- a fossil pteridophyte was discovered from
Answer: Silurian beds of Victoria, Australia
The stalk of Datura flower at its base is known as
The male reproductive parts of a flower, the stamens, are collectively known as
The other name for gynoecium is
Functional megaspore in a flowering plant develops into
Which of the following is similar to autogamy, but requires pollinators?
What is the function of the filiform apparatus?
Answer: Guide the entry of pollen tube
A mass of nutritive material outside the embryo sac is called _____
Which of the following statements is correct?
Answer: Tapetum nourishes the developing pollen
Which of the following fruit is produced by parthenocarpy?
The process of formation of seeds without fertilization in flowering plants is known as
Pollen grains are well preserved as fossils because of……
Yucca plant is pollinated by
Many insects may consume pollen without bringing out pollination such floral visitors are referred to as :
which of the following statement is not true
Answer: Tapetum helps in the dehiscence of anther
An example for a plant that provides safe places to lay eggs as floral rewards for pollination
Presence of more than one embryos in Seed without fertilization is
Which one of the following statement is not correct
Answer: In potato, ginger and banana the new plantlets are arise from internodes of modified stem
Which one of the following generate new genetic variation
Answer: Sexual reproduction
In majority of Angiosperms
Answer: A small central cell is present in the Embryosac
The ovule of an angiosperm is technically called.
Double fertilization is exhibited by
Morphological nature of edible part of coconut is
Dioecious flowering plant prevents both
Answer: Autogamy and Geitenogamy
Attraction and rewards are required for pollination in
Functional megaspore in an Angiosperm develops into
The coconut water from tender coconut represents
Answer: Free Nuclear endosperm
The proximal end of filament of stamen is attached to
Pollination in water hyacinth and water lily is carried out by
Name the plant that come to the surface of water to collect pollen grains
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