NEET Biology Sexual Reproduction In Flowering Plants MCQs Set C

Question: The devices to discourage self pollination are

• a) All of these
• b) Rejection of pollen by stigma of the same flowers
• c) Anther and stigma are placed at different position
• d) Pollen release and stigma receptivity is not synchronised

Answer: All of these

Question: In monoecious plant like castor and maize

• a) Geitonogamy is not prevented
• b) Geitonogamy is prevented
• c) Autogamy and allogamy are not prevented
• d) Autogamy is not prevented

Answer: Geitonogamy is not prevented

Question: Select incorrect statement (w.r.t. artificial hybridisation)

• a) Emasculation is removal of anther in their mature condition from bisexual flower
• b) Emasculation is not required in male sterile plants
• c) Unisexual female flower is bagged in bud condition to prevent contamination
• d) Emasculated flowers are bagged in bud condition

Answer: Emasculation is removal of anther in their mature condition from bisexual flower

Question: Pick out wrong statement

• a) Exine has apertures where sporopollenin is present
• b) Sequoia, a gymnosperm, is one of the tallest tree
• c) Double fertilization is unique to angiosperms
• d) Exine of pollen grains is made up of sporopollenin

Answer: Exine has apertures where sporopollenin is present

Question:

• a)

  

  

• b)

  

  

• c)

  

  

• d) None of these

Answer:

Question:

• a)

  

  

• b)

  

  

• c)

  

  

• d) None of these

Answer:

Question: Choose the correct option from the following

I. Dehydration and dormancy of mature seed are crucial for seed storage.
II. Seed of Lupinus arcticus is the oldest one which germinated after 2000 year.
III. Orchid seed is one of largest seed in plant Kingdom.
IV. Seeds of parasitic plants Orobanche and Striga are tiny seeds

• a) I, IV are correct but II, III are incorrect
• b) II, III are correct but I, IV are incorrect
• c) I, II are correct but III, IV are incorrect
• d) III, IV are correct but I, II are incorrect

Answer: I, IV are correct but II, III are incorrect

Question:

• a)

  

  

• b)

  

  

• c)

  

  

• d)

  

  

Answer:

Question: Select the correct statement from the following

• a) There are many embryos of different sizes and shapes in the seeds of orange
• b) Obturator directs the growth of pollen tube towards micropyle of seed
• c) Hanging drop method as in-vivo germination of pollen grain
• d) Embryo arises parthenogenetically from the diploid egg in adventive embryony

Answer: There are many embryos of different sizes and shapes in the seeds of orange

Question: Choose the correct option from the following statements.

I. Apomixis is form of asexual reproduction which mimics sexual reproduction.
II. In Apomixis seeds develop either from diploid egg cell or from cells of nucellus.
III. Seeds collected from hybrids plant maintain hybrid character for a longer times.
IV. In Apomixis, there is segregation of characters.

• a) Only I and II are correct
• b) All are correct
• c) All are incorrect
• d) Only II and IV are correct

Answer: Only I and II are correct

Question: Coconut water from a tender coconut is

• a) Free nuclear endosperm
• b) Degenerated nucellus
• c) Immature embryo
• d) Innermost layers of the seed coat

Answer: Free nuclear endosperm

Question: Filiform apparatus is characteristic feature of

• a) Synergids
• b) Generative cell
• c) Nucellar embryo
• d) Aleurone cell

Answer: Synergids

Question: The wheat grain has an embryo with one large shield-shaped cotyledon known as

• a) Scutellum
• b) Coleorrhiza
• c) Epiblast
• d) Coleoptile

Answer: Scutellum

Question: Which one of the following fruits is parthenocarpic?

• a) Banana
• b) Brinjal
• c) Apple
• d) Jackfruit

Answer: Banana

Question: In angiosperms, microsporogenesis and megasporogenesis

• a) Involve meiosis
• b) Occur in anther
• c) Occur in ovule
• d) Form gametes without further divisions

Answer: Involve meiosis

Question: Which one of the following statements is not true?

• a) Honey is made by bees by digesting pollen collected from flowers
• b) Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
• c) Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
• d) The flowers pollinated by flies and bats secrete foul odour to attract them

Answer: Honey is made by bees by digesting pollen collected from flowers

Question: The hilum is a scar on the

• a) Seed, where funicle was attached
• b) Fruit, where style was present
• c) Seed, where micropyle was present
• d) Fruit, where it was attached to pedicel

Answer: Seed, where funicle was attached

Question: Which one of the following may require pollinators, but is genetically similar to autogamy?

• a) Geitonogamy
• b) Xenogamy
• c) Apogamy
• d) Cleistogamy

Answer: Geitonogamy

Question: Which of the following are the important floral rewards to the animal pollinators?

• a) Nectar and pollen grains
• b) Protein pellicle and stigmatic exudates
• c) Colour and large size of flower
• d) Floral fragrance and calcium crystals

Answer: Nectar and pollen grains

More Questions....................................

Question: Transmission tissue is characteristic feature of

• a) Solid style
• b) Dry stigma
• c) Hollow style
• d) Wet stigma

Answer: Solid style

Question: Geitonogamy involves

• a) Fertilization of a flower by the pollen from another flower of the same plant
• b) Fertilization of a flower by the pollen from the same flower
• c) Fertilization of a flower by the pollen from a flower of another plant in the same population
• d) Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population

Answer: Fertilization of a flower by the pollen from another flower of the same plant

Question: Pollen tablets are available in the market for

• a) Supplementing food
• b) Ex situ conservation
• c) Breeding Equisetum
• d) In vitro fertilization

Answer: Supplementing food

Question: Function of filiform apparatus is to

• a) Guide the entry of pollen tube
• b) Stimulate division of generative cell
• c) Recognize the suitable pollen at stigma
• d) Produce nectar

Answer: Guide the entry of pollen tube

Question: Perisperm differs from endosperm in

• a) Being a diploid tissue
• b) Having no reserve food
• c) Its formation by fusion of secondary nucleus with several sperms
• d) Being a haploid tissue

Answer: Being a diploid tissue

Question: Megasporangium is equivalent to

• a) Ovule
• b) Embryo sac
• c) Nucellus
• d) Fruit

Answer: Ovule

Question:  Advantage of cleistogamy is

• a) No dependence on pollinators
• b) Higher genetic variability
• c) More vigorous offspring
• d) Vivipary

Answer: No dependence on pollinators

Question: Which one of the following statements is correct ?

• a) Tapetum nourishes the developing pollen
• b) Sporogenous tissue is haploid
• c) Endothecium produces the microspores
• d) Hard outer layer of pollen is called intine

Answer: Tapetum nourishes the developing pollen

Question: An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

• a) Sporopollenin
• b) Cuticle
• c) Cellulose
• d) Lignin

Answer: Sporopollenin

Question: The coconut water and the edible part of coconut are equivalent to

• a) Endosperm
• b) Endocarp
• c) Embryo
• d) Mesocarp

Answer: Endosperm

Question: The gynoecium consists of many free pistils in flowers of

• a) Michelia
• b) Papaver
• c) Aloe
• d) Tomato

Answer: Michelia

Question: Which one of the following statements is wrong?

• a) When pollen is shed at two-celled stage, double fertilization does not take place
• b) Vegetative cell is larger than generative cell
• c) Pollen grains in some plants remain viable for months
• d) Intine is made up of cellulose and pectin

Answer:  When pollen is shed at two-celled stage, double fertilization does not take place

Question: What is the function of germ pore?

• a) Initiation of pollen tube
• b) Emergence of radicle
• c) Absorption of water for seed germination
• d) Release of male gametes

Answer: Initiation of pollen tube

Question: Even in absence of pollination agents seed-setting is assured in

• a) Commellina
• b) Zostera
• c) Fig
• d) Salvia

Answer:  Commellina

Question: Both, autogamy and geitonogamy are prevented in

• a) Papaya
• b) Cucumber
• c) Maize
• d) Castor

Answer: Papaya

Question: Plants with ovaries having only one or a few ovules, are generally pollinated by

• a) Wind
• b) Birds
• c) Butterflies
• d) Bees

Answer: Wind

Question: Nucellar polyembryony is reported in species of

• a) Citrus
• b) Gossypium
• c) Triticum
• d) Brassica

Answer: Citrus

Question: Filiform apparatus is a characteristic feature of

• a) Synergid
• b) Egg
• c) Suspensor
• d) Zygote

Answer: Synergid

Question: Wind pollination is common in

• a) Grasses
• b) Lilies
• c) Legumes
• d) Orchids

Answer:  Grasses

Question: In which one of the following pollination is autogamous?

• a) Cleistogamy
• b) Geitonogamy
• c) Xenogamy
• d) Chasmogamy

Answer: Cleistogamy

Question: In angiosperms, functional megaspore develops into

• a) Embryo sac
• b) Ovule
• c) Pollen sac
• d) Endosperm

Answer:  Embryo sac

Question: What is common between vegetative reproduction and Apomixis?

• a) Both produces progeny identical to the parent
• b) Both bypass the flowering phase
• c) Both occur round the year
• d) Both are applicable to only dicot plants

Answer:  Both produces progeny identical to the parent

Question: What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

• a) 63
• b) 84
• c) 42
• d) 21

Answer: 63

Question: Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

• a) Geitonogamy
• b) Karyogamy
• c) Xenogamy
• d) Autogamy

Answer:  Geitonogamy

Question: Wind pollinated flowers are

• a) Small, producing large number of dry pollen grains
• b) Small, brightly coloured, producing large number of pollen grains
• c) Small, producing nectar and dry pollen
• d) Large, producing abundant nectar and pollen

Answer: Small, producing large number of dry pollen grains

Question: Apomictic embryos in Citrus arise from

• a) Maternal sporophytic tissue in ovule
• b) Diploid egg
• c) Synergids
• d) Antipodal cells

Answer: Maternal sporophytic tissue in ovule

Question: Which one of the following pairs of plant structures has haploid number of chromosomes?

• a) Egg cell and antipodal cells
• b) Egg nucleus and secondary nucleus
• c) Megaspore mother cell and antipodal cells
• d) Nucellus and antipodal cells

Answer:  Egg cell and antipodal cells

Question: What does the filiform apparatus do at the entrance into ovule?

• a) It helps in the entry of pollen tube into a synergid
• b) It guides pollen tube from a synergid to egg
• c) It prevents entry of more than one pollen tube into the embryosac
• d) It brings about opening of the pollen tube

Answer: It helps in the entry of pollen tube into a synergid

Question: Unisexuality of flowers prevents

• a) Autogamy, but not geitonogamy
• b) Geitonogamy, but not xenogamy
• c) Autogamy and geitonogamy
• d) Both geitonogamy and xenogamy

Answer:  Autogamy, but not geitonogamy

Question: Which one of the following is resistant to enzyme action?

• a) Pollen exine
• b) Wood fibre
• c) Cork
• d) Leaf cuticle

Answer: Pollen exine

Question: Male gametes in angiosperms are formed by the division of

• a) Generative cell
• b) Microspore mother cell
• c) Microspore
• d) Vegetative cell

Answer:  Generative cell

Question: Which one of the following is surrounded by a callose wall?

• a) Microspore mother cell
• b) Egg
• c) Pollen grain
• d) Male gamete

Answer: Microspore mother cell

Question: What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?

• a) 24
• b) 8
• c) 16
• d) 32

Answer: 24

Question: Parthenocarpic tomato fruits can be produced by

• a) Treating the plants with low concentrations of gibberellic acid and auxins
• b) Raising the plants from vernalized seeds
• c) Treating the plants with phenylmercuric acetate
• d) Removing androecium of flowers before pollen grains are released

Answer:  Treating the plants with low concentrations of gibberellic acid and auxins

Question: Long filamentous threads protruding at the end of a young cob of maize are

• a) Styles
• b) Ovaries
• c) Hairs
• d) Anthers

Answer: Styles

Question: The arrangement of the nuclei in a normal embryo sac in the dicot plants is

• a) 3 + 2 + 3
• b) 2 + 3 + 3
• c) 3 + 3 + 2
• d) 2 + 4 + 2

Answer: 3 + 2 + 3

Question: In a cereal grain the single cotyledon of embryo is represented by

• a) Scutellum
• b) Coleorhiza
• c) Prophyll
• d) Coleoptile

Answer: Scutellum

Question: In a type of apomixis known as adventive embryony, embryos develop directly from the

• a) Nucellus or integuments
• b) Accessory embryo sacs in the ovule
• c) Synergids or antipodals in an embryo sac
• d) Zygote

Answer: Nucellus or integuments

Question: Through which cell of the embryo sac, does the pollen tube enter the embryo sac?

• a) Degenerated synergid
• b) Central cell
• c) Egg cell
• d) Persistant synergid

Answer: Degenerated synergid

Question: Which one of the following represents an ovule, where the embryo sac becomes horse- shoe shaped and the funiculus and micropyle are close to each other?

• a) Amphitropous
• b) Atropous
• c) Anatropous
• d) Circinotropous

Answer: Amphitropous

Question: Which one of the following statements is correct?

• a) Cleistogamous flowers are always autogamous
• b) Geitonogamy involves the pollen and stigma of flowers of different plants
• c) Xenogamy occurs only by wind pollination
• d) Chasmogamous flowers do not open at all

Answer:  Cleistogamous flowers are always autogamous

Question: Megaspores are produced from the megaspore mother cells after

• a) Meiotic division
• b) Formation of a thick wall
• c) Mitotic division
• d) Differentiation

Answer: Meiotic division

Question: Animal vectors are required for pollination in

• a) Cucumber
• b) Mulbery
• c) Vallisneria
• d) Maize

Answer: Cucumber

Question: Which of the following statements is correct?

• a) Sporopollenin can withstand high temperatures as well as strong acids and alkalis
• b) Sporopollenin is made up of inorganic materials
• c) Sporopollenin can be degraded by enzymes
• d) Sporopollenin can withstand high temperatures but not strong acids

Answer: Sporopollenin can withstand high temperatures as well as strong acids and alkalis

Question: Albuminous seeds store their reserve food mainly in

• a) Endosperm
• b) Cotyledons
• c) Hypocotyl
• d) Perisperm

Answer: Endosperm

Question: Embryo in sunflower has

• a) Two cotyledons
• b) Many cotyledons
• c) No cotyledon
• d) One cotyledon

Answer: Two cotyledons

Question: Parthenocarpic tomato fruits can be produced by

• a) Treating the plants with low concentrations of gibberellic acid and auxins
• b) Removing androecium of flowers before pollen grains are released
• c) Treating the plants with phenylmercuric acetate
• d) Raising the plants from vernalized seeds

Answer: Treating the plants with low concentrations of gibberellic acid and auxins

Question: Endosperm is consumed by developing embryo in the seed of

• a) Pea
• b) Castor
• c) Coconut
• d) Maize

Answer: Pea

Question: In a flowering plant, the pollen tube first arrives in

• a) A synergid
• b) Central cell
• c) An antipodal cell
• d) Egg

Answer: A synergid

Question: Which of the following statements is wrong?

• a) Pollen grains remain viable for several months because their outer covering is made of sporopollenin
• b) No enzyme can degrade sporopollenin
• c) Pollen grains are well represented in fossil strata due to sporopollenin
• d) Pollen wall has cavities containing proteins

Answer: Pollen grains remain viable for several months because their outer covering is made of sporopollenin

Question: Long, ribbon-like pollen grains are seen in some

• a) Aquatic plants
• b) Gymnosperms
• c) Wind-pollinated grasses
• d) Bird-pollinated flowers

Answer: Aquatic plants

Question:  Which one of the following pairs of plant structures has haploid number of chromosomes?

• a) Egg cell and antipodal cells
• b) Egg nucleus and secondary nucleus
• c) Megaspore mother cell and antipodal cells
• d) Nucellus and antipodal cells

Answer: Egg cell and antipodal cells

Question: Embryo sac represents

• a) Megagametophyte
• b) Megasporophyll
• c) Megaspore
• d) Megagamete

Answer: Megagametophyte

Question: If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be

• a) Pentaploid
• b) Haploid
• c) Triploid
• d) Tetraploid

Answer:  Pentaploid

Question: The role of double fertilization in angiosperms is to produce

• a) Endosperm
• b) Integuments
• c) Endocarp
• d) Cotyledons

Answer: Endosperm

Question: An interesting modification of flower shape for insect pollination occurs in some orchids in which a male insect mistakes the pattern on the orchid flower for the female species and tries to copulate with it, thereby pollinating the flower. This phenomenon is called

• a) Pseudo-copulation
• b) Mimicry
• c) Pseudo-parthenocarpy
• d) Pseudo-pollination

Answer: Pseudo-copulation

Question: Endosperm is formed during the double fertilization by

• a) Two polar nuclei and one male gamete
• b) Ovum and male gamete
• c) One polar nuclei and one male gamete
• d) Two polar nuclei and two male gametes

Answer: Two polar nuclei and one male gamete

Question: Anemophily type of pollination is found in

• a) Coconut
• b) Vallisnaria
• c) Bottle brush
• d) Salvia

Answer: Coconut

Question: What is the direction of micropyle in anatropous ovule?

• a) Downward
• b) Right
• c) Left
• d) Upward

Answer: Downward

Question: In angiosperm, all the four microspores of tetrad are covered by a layer which is formed by

• a) Callose
• b) Cellulose
• c) Sporopollenin
• d) Pectocellulose

Answer: Callose

Question: In angiosperms, pollen tube liberate their male gametes into the

• a) Synergids
• b) Egg cell
• c) Antipodal cells
• d) Central cell

Answer: Synergids

Question:  An ovule which becomes curved so that the nucellus and embryo sac lie at right angle to the funicle, is

• a) Hemitropous
• b) Campylotropous
• c) Anatropous
• d) Orthotropous

Answer: Hemitropous

Question: When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is

• a) Tetraploidy
• b) Pentaploidy
• c) Diploidy
• d) Triploidy

Answer: Tetraploidy

Question: The polyembryony commonly occurs in

• a) Citrus
• b) Turmeric
• c) Potato
• d) Tomato

Answer:  Citrus

Question: Eight nucleated embryosac is

• a) Any of these
• b) Only tetrasporic
• c) Only bisporic
• d) Only monosporic

Answer: Any of these

Question: Adventive embryony in Citrus is due to

• a) Nucellus
• b) Integuments
• c) Zygotic embryo
• d) Fertilized egg

Answer: Nucellus

Question: In a flowering plant, archesporium gives rise to

• a) Both wall and the sporogenous cells
• b) Only tapetum and sporogenous cells
• c) Only the wall of the sporangium
• d) Wall and the tapetum

Answer: Both wall and the sporogenous cells

Question: Apomictic embryos in Citrus arise from

• a) Maternal sporophytic tissue in ovule
• b) Diploid egg
• c) Synergids
• d) Antipodal cells

Answer:  Maternal sporophytic tissue in ovule

Question: In a type of apomixis known as adventive embryony, embryos develop directly from the

• a) Nucellus or integuments
• b) Synergids or antipodals in an embryosac
• c) Zygote
• d) Accessory embryo sacs in the ovule

Answer: Nucellus or integuments

Question: Function of filiform apparatus is to

• a) Guide the entry of pollen tube
• b) Stimulate division of generative cell
• c) Recognize the suitable pollen at stigma
• d) Produce nectar

Answer: Guide the entry of pollen tube

Question: Pericarp is dry in

• a) Groundnut, mustard
• b) Guava, mango, mustard
• c) Mango, groundnut, orange
• d) Orange, guava, mango

Answer:  Groundnut, mustard