CBSE Questions for Class 12 Medical Biology Sexual Reproduction In Flowering Plants Quiz 3 - MCQExams.com

Gynoecium with fused carpels is called:
  • Syncarpous
  • Apocarpous
  • Syngenecium
  • All of the above
Choose the product that is derived from style and stigma.
  • Saffron
  • Fenugreek
  • Asafoetida
  • Psyllium
The primitive type of stamens are found in which of the following family?
  • Liliaceae
  • Malvaceae
  • Gramineae or Poaceae
  • Degeneriaceae or Magnoliaceae
Flowers and stamens of compositae are
  • Hypogynous and inferior
  • Epigynous and superior
  • Hypogynous and superior
  • Epigynous and superior ovary
Emasculation is a part of
  • Clonal selection
  • Mass selection
  • Hybridization
  • Pure line selection
Stamens attached to petals are
  • Antipetalous
  • Epipetalous
  • Epiphyllous
  • Episepalous
Axis developing between androecium and gynoecium is
  • Anthophore
  • Androphore
  • Gynophore
  • Gynandrophore
Which statement is correct for compositae?
  • 5-lobed stamens
  • Syngenesious stamens
  • Basal ovule
  • Ligulate ray florets
Epipetalous and syngenesious stamens occur in
  • Solanaceae
  • Brassicaceae
  • Fabaceae
  • Asteraceae
Diadelphous stamens are the characteristic feature of
  • Ranunculaceae
  • Fabaceae
  • Poaceae
  • Malvaceae
Inferior ovary occurs in _____________.
  • Cruciferae
  • Compositae
  • Malvaceae
  • Ranuculaceae
If any following part of flower, is involved in the formation of fruit is called as false fruit. Such part is
  • Thalamus
  • Tepal
  • Calyx
  • All of the above
Masses of pollen grains i.e. pollinia is found in
  • Orchidaceae
  • Solanaceae
  • Malvaceae
  • Gramineae
In many cultivated ornamental flowers, number of petal whorls is higher than the one in wild type. Extra petals are generally modified
  • Sepals
  • Petals
  • Stamens
  • Pistils
The condition where filaments and anthers are fused throughout the entire length is ___________.
  • Synandrous
  • Gynadrous
  • Protandrous
  • Syngenesius
The condition of stamens in Cruciferae family is correctly
expressed as

  • $$A_{6}$$
  • A_{2+4}
  • A_{4+2}
  • All of these
Which of the following statements regarding pollen grain is correct?
  • Tapetum nourishes the developing pollen.
  • Sporogenous tissue in the anther is haploid.
  • Endothecium produces the micro spores.
  • Only pollen cannot produce a complete plant in any condition.
Which of the following is the correct sequence of events of sexual reproduction in a flower?
  • Pollination, fertilisation, seedling, embryo
  • Seedling, embryo, fertilisation, pollination
  • Pollination, fertilisation, embryo, seedling
  • Embryo, seedling, pollination, fertilisation
In Figure, the parts A, B and C are ___, ___ and _____.

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  • Cotyledon, plumule and radicle
  • Plumule, radicle and cotyledon
  • Plumule, cotyledon and radicle
  • Radicle, cotyledon and plumule
A triglyceride molecule has

  • Three fatty acids with one glycerol molecule
  • Three fatty acids with two glycerol molecule
  • Two fatty acids with two glycerol molecules
  • One fatty acid with one glycerol molecule
Grafting is not possible in monocots because they

  • Have scattered vascular bundles
  • Have parallel venation
  • Are herbaceous
  • Lack cambium
In a type of apomixis known as adventive embryony, embryos develop directly from the -
  • Synergids or antipodals in an embryo sac
  • Nucellus or integuments
  • Zygote
  • Accessory embryo sacs in the ovule
The anther contains
  • Sepals
  • Ovules
  • Carpel
  • Pollen grains
Beaked, syngenesious anthers and epipetalous stamens are found in
  • Liliaceae
  • Solanaceae
  • Compositae
  • Malvaceae
Which of the following is the correct sequence of the events of sexual reproduction in a flower?
  • Pollination, Fertilisation, Embryo, Seed
  • Pollination, Fertilisation, Seed, Embryo
  • Seed, Embryo, Fertilisation, Pollination
  • Embryo, Seed, Fertilisation, Pollination
When embryo develops from nucellus, it is known as 
  • Recurrent agamospermy
  • Adventive polyembryony (sporophytic budding)
  • Non-recurrent agamospermy
  • None of the above
The migration of pollen grains to stigma is called as____________.
  • Fertilization
  • Pollination
  • Fusion
  • Reproduction
Pollen grains are produced by
  • Leaves
  • Stamens
  • Gynoecium
  • Pistil
Number of stamens present in Malvaceae is
  • Infinite $$(\infty)$$
  • 5
  • 10
  • 9 + 1
The anther contains-
  • Sepals.
  • Ovules.
  • Carpel.
  • Pollen grains.
The asexual process replaced by the sexual method is known as
  • Apomixis
  • Amphimixis
  • Apospory
  • None of the above
Leeuwenhoek discovered ............
  • Double fertilization in angiosperms
  • Polyembryony in citrus
  • Endosperm development
  • All of the above
Perispermic seed is
  • Formed by sexual reproduction
  • Formed by parthenogenesis
  • The one with remnant of endosperm
  • None of the above
Outermost layer of the pollen is formed from ..........
  • Pectocellulose
  • Lignocellulose
  • Sporopollenin
  • Pollenkit
A mature embryo is merely a spherical structure without the rudiments of plumule, radicle or cotyledons is seen in 
  • Orobanche
  • Riccinus
  • Pisum
  • Zea
The pro-ubisch bodies are converted to ubisch bodies when they become 
coated by ..............
  • Sporoderm
  • Sporopollenin
  • Cutin
  • Suberin
Pollenkit helps in the
  • Nutrition of pollen
  • Nutrition of insects
  • Formation of pollen
  • Sticking to the body of insects
Pick up the correct statement for pollen tube.
  • It is composed of three noncellular zones.
  • It shows chemotactic movement.
  • It shows only tip growth.
  • It shows cytoplasmic streaming.
  • Both B and C
Which of the following is a non-recurrent apomixis? 
  • Amphimixis
  • Haploid parthenogenesis
  • Aneuspory
  • Diploid parthenogenesis
The male gametes of angiosperms are
  • Uniflagellate
  • Biflagellate
  • Non-motile as there is no flagellated stage in the life cycle of angiosperms
  • None of the above
The process whereby a perfect flower is pollinated by its own pollen is 
called as .........
  • Allogamy
  • Autogamy
  • Xenogamy
  • Hydrogamy
In .......... flowers, the stigma is always branched rough and sticky.
  • Entomophilous
  • Anemophilous
  • Hydrophilous
  • All of the above 
What is meant by emasculation?
  • Pollination between flowers of same plant.
  • Pollination between flowers of different plants.
  • Removal of the anthers.
  • Artificial pollination.
The type of pollination in which pollen is transferred from anther of a flower to stigma of another flower of the same plant it is called
  • Allogamy
  • Geitonogamy
  • Xenogamy
  • Allo-autogamy
In which of the following is translator apparatus present?
  • Ovules of mustard
  • Pollen grains of mango
  • Pollinia of Calotropis
  • Ovules of pea
Plants with spikelet inflorescence are well adapted for ...........
  • Anemophily
  • Hydrophily
  • Entomophily
  • Malacophily
In Ficus (peepal), pollination takes place by 
  • Water
  • Bird
  • Insects
  • Snails
Which of the following defines the characteristics of family Asclepiadaceae?
  • Non-sticky
  • Packed in pollinia
  • Winged
  • Very heavy
The pollination by ........ is called as zoophily.
  • Wind
  • Water
  • Animals
  • None of the above
............. favours autogamy
  • Dicliny
  • Dichogamy
  • Herkogamy
  • Homogamy
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