NEET Biology Sexual Reproduction In Flowering Plants MCQs Set B

Question. The arrangement of the ρ haploid nuclei in the normal dicot embryo sac is
(a) 2 + 3 + 2
(b) 3 + 2 + 3
(c) 3 + 3 + 2
(d) 2 + 3 + 3

Answer: A

Question. In the flowering plants, male and female gametes both are
(a) Non-motile
(b) Very large
(c) Diploid
(d) Motile

Answer: A

Question. Wind pollination requires that the pollen grains are
(a) Light and dry
(b) Heavy and wet
(c) Heavy and non-sticky
(d) Heavy and sticky

Answer: A

Question. Future sporophytic generation in a seed is
(a) Embryo
(b) Endosperm
(c) Hypocotyl
(d) Cotyledon

Answer: A

Question. Scatelum is
(a) a cotyledon
(b) an endosperm
(c) an embryo
(d) a seed coat

Answer: A

Question. Which one of the following floats in the cytoplasm of the vegetative cell ?
(a) Generatic cell
(b) Male gamete
(c) Female gamete
(d) Microspore

Answer: A

Question. The mature pollen grain contains
(a) 2 cells
(b) 3 cells
(c) 7 cells
(d) 1 cell

Answer: A

Question. Pollen tube is formed by
(a) Intine
(b) Style
(c) Exine
(d) Germ pore

Answer: A

Question. A single ovule produces
(a) 1 female gamete
(b) 3 female gamete
(c) 2 female gamete
(d) 4 female gamete

Answer: A

Question. Embryo sac is formed inside
(a) Ovule
(b) Seed
(c) Embryo
(d) Endosperm

Answer: A

Question. Suspensor is made up of
(a) 20 to 25 cells
(b) 2 to 4 cells
(c) 8 to 16 cells
(d) None of the above

Answer: A

Question. Root cap of the embryo develops from
(a) Hypophysis
(b) Basal cell
(c) Apical cell
(d) Hypocotyl

Answer: A

Question. Pro-embryo is a
(a) 4 celled structure
(b) 16 celled structure
(c) 8 celled structure
(d) 2 celled structure

Answer: A

Question. The hilum of the ovule represents the junction between
(a) Funicle and ovule
(b) Nucellus and Integuments
(c) Nucellus and Embryo
(d) Funicle and Integuments

Answer: A

Question. Which layer of the wall of microsporangium is made up of Fibrous layer
(a) Endothecium
(b) Tapetum
(c) Epidermis
(d) Middle layer

Answer: A

Question. Out of the four sets of appendages of a typical flower the outer two sets are
(a) Sterile
(b) Filamentous
(c) Reproductive
(d) Fertile

Answer: A

Question. A proximal sterile part of the stamen is called
(a) Filament
(b) Connective
(c) Style
(d) Anther

Answer: A

Question. A sterile region present between stigma and ovary is called
(a) Style
(b) Suspensor
(c) Filament
(d) Pollen tube

Answer: A

Question. The opposite end of the micropylar region of an ovule is called
(a) Chalaza
(b) Thalamus
(c) Nucellus
(d) Embryo sac

Answer: A

Question. When pollen grains are not transferred from anthers to stigma in a flower, due to the physical barrier, it is called
(a) Herkogamy
(b) Cleistogamy
(c) Dichogamy
(d) Heterogamy

Answer: A

Question. A typical angiosperm anther is _________ and _________.
(a) Bilobed, tetrasporangiate
(b) Bilobed, bisporangiate
(c) Bilobed, monosporangiate
(d) Tetralobed, monosporangiate

Answer: A

Question. The innermost wall layer of anther
(a) Is nutritive in function
(b) Is haploid and protective in function
(c) Forms microspores
(d) Helps in dehiscence of anther

Answer: A

Question. The process of formation of microspores from a pollen mother cell is called
(a) Microsporogenesis
(b) Megagametogenesis
(c) Microgametogenesis
(d) Megasporogenesis

Answer: A

Question. The pollen grain represents
(a) Male gametophyte
(b) Microsporophyll
(c) Microsporangium
(d) Male gamete

Answer: A

Question.  The most resistant organic material known which makes up the outermost layer of pollen wall is
(a) Sporopollenin
(b) Lignin
(c) Cellulose
(d) Pectin

Answer: A

Question. Choose the correct option w.r.t. the function of the germ pore.
(a) It allows growth of pollen tube
(b) It helps dehiscence of pollen grain
(c) It allows water absorption in seed
(d) More than one option is correct

Answer: A

Question. The thin and continuous wall layer of pollen is
(a) Intine
(b) Germ pore
(c) Endothecium
(d) Exine

Answer: A

Question. The two-celled stage of mature pollen grain consists of
(a) Vegetative cell, generative cell
(b) Two male gametes
(c) Vegetative cell, one male gamete
(d) Generative cell, one male gamete

Answer: A

Question. In 40% angiosperms, the pollen grains are shed at
(a) Three-celled stage
(b) Two-celled stage
(c) Five-celled stage
(d) Four-celled stage

Answer: A

Question. Pollen allergy is caused by pollens of
(a) Parthenium
(b) Sunflower
(c) Clematis
(d) Rose

Answer: A

Question. The pollen viability period of rice and pea respectively, is
(a) 30 minutes and several months
(b) Few days and few months
(c) Several months and 30 minutes
(d) Few days in both the cases

Answer: A

Question. Integumented megasporangium is
(a) Ovule
(b) Pollen sac
(c) Pollen grain
(d) Embryo sac

Answer: A

Question.  The nutritive tissue present in the ovule is called
(a) Nucellus
(b) Funicle
(c) Embryo
(d) Integuments

Answer: A

Question. The number of embryo sac in an ovule is generally
(a) One
(b) Many
(c) Four
(d) Three

Answer: A

Question. The role of triple fusion in angiosperms is to produce
(a) PEN
(b) Cotyledons
(c) Endocarp
(d) Seed

Answer: A

Question. The ploidy level of nucellus and female gametophyte respectively is
(a) 2n, n
(b) 2n, 2n
(c) n, 2n
(d) n, n

Answer: A

Question. The number of nuclei in a mature embryo sac are
(a) Eight
(b) Seven
(c) Six
(d) Four

Answer: A

Question. The largest cell of the mature embryo sac is
(a) Central cell
(b) Egg cell
(c) Synergids
(d) Antipodal cells

Answer: A

Question. The structures which guide the pollen tube into synergid is
(a) Filiform apparatus
(b) Aril
(c) Germ pore
(d) Antipodals

Answer: A

Question. Geitonogamy is
(a) Genetically autogamous
(b) Genetically allogamous
(c) Ecologically autogamous
(d) Functionally autogamous

Answer: A

Question. Which of the following plant provides safe place to insect for laying eggs?
(a) Amorphophallus
(b) Ophrys
(c) Mango
(d) Sage plant

Answer: A

Question. Production of seed without fertilization is called
(a) Apomixis
(b) Apogamy
(c) Parthenogenesis
(d) Parthenocarpy

Answer: A

Question. Examples of water pollinated flowers are
(a) Vallisneria, Hydrilla, Zostera
(b) Lotus, Vallisneria, Hydrilla
(c) Zostera, Lotus, water lily
(d) Potamogeton, Vallisneria, Lotus

Answer: A

Question. The central cell after triple fusion becomes the
(a) PEC
(b) PEN
(c) Endosperm
(d) Embryo

Answer: A

Question. Which of the following is not a characteristic feature of insect pollinated flowers?
(a) Mucilaginous covering on pollen grains
(b) Nectaries
(c) Fragrance
(d) Foul odour

Answer: A

Question. Pollen robbers
(a) Consume pollen or nectar
(b) Do not visit flowers for pollen
(c) Are effective in bringing about pollination
(d) Take pollen from other insects

Answer: A

Question. Dioecious condition prevents
(a) Both
(b) Geitonogamy
(c) Autogamy
(d) None of these

Answer: A

Question. The diploid and triploid product of double fertilization respectively are
(a) Zygote and primary endosperm nucleus
(b) Embryo and perisperm
(c) Endosperm and cotyledons
(d) Zygote and scutellum

Answer: A

Question. Double endosperm is found in
(a) Coconut
(b) Pea
(c) Rice
(d) Wheat

Answer: A

Question. Exalbuminous seeds are of
(a) Pea, groundnut, beans
(b) Wheat, pea, groundnut
(c) Castor, pea, groundnut
(d) Wheat, castor, rice

Answer: A

Question.  The single cotyledon in monocots is
(a) Scutellum which is lateral in position
(b) Scutellum which is centrally placed
(c) Aleurone layer which is terminal in position
(d) Epiblast which is haploid and lateral in position

Answer: A

Question. The sheath enclosing plumule and radicle respectively in monocot seed are
(a) Coleoptile and coleorhiza
(b) Scutellum and epiblast
(c) Coleorhiza and coleoptile
(d) Aleurone layer and pericarp

Answer: A

Question.  Perispermic seeds are
(a) Black pepper, beet
(b) Maize, beet
(c) Barley, maize
(d) Castor, sunflower

Answer: A

Question. Adventive polyembryony is common in
(a) Mango
(b) Orobanche
(c) Apple
(d) Wheat

Answer: A

Question. Which of the following is a parthenocarpic fruit?
(a) Banana
(b) Apple
(c) Strawberry
(d) Pomegranate

Answer: A

Question. Pollen grains are generally _________ in outline measuring _________ micrometers in diameter
(a) Spherical, 25-50
(b) Oblong, 25-50
(c) Oval, 10-25
(d) Spherical, 75-100

Answer: A

Question. The vegetative cell is
(a) Large, has large irregularly shaped nucleus
(b) Small, spindle shaped nucleus
(c) Small, has large irregularly shaped nucleus
(d) Large with spindle shaped nucleus

Answer: A

Question. Cryopreservation means storing of products in
(a) Liquid nitrogen
(b) Liquid oxygen
(c) Liquid hydrogen
(d) Liquid helium

Answer: A

Question. Choose the odd one w.r.t. gynoecium
(a) The number of ovules in papaya and mango is one
(b) The gynoecium may be syncarpous or apocarpous
(c) Gynoecium represents the female reproductive part of flower
(d) The ovules are attached to placenta

Answer: A

Question. The number of mitotic generations required to form a mature embryo sac in most of the flowering plants is
(a) Three
(b) Four
(c) Two
(d) One

Answer: A

Question. The types of flowers which always produce seeds even in the absence of pollinators
(a) Cleistogamous flowers
(b) Unisexual flowers
(c) Chasmogamous flowers
(d) Bisexual flowers

Answer: A

Question. The type of pollination which brings genetically different types of pollen on the stigma is
(a) Xenogamy
(b) Geitonogamy
(c) Cleistogamy
(d) Autogamy

Answer: A

Question. Feathery stigma and versatile anthers are characteristic of
(a) Wind pollinated flowers
(b) Water pollinated flowers
(c) Insect pollinated flowers
(d) Bat pollinated flowers

Answer: A

Question. Hydrophily is limited to 30 genera which are mostly
(a) Monocots
(b) More than one option is correct
(c) Gymnosperms
(d) Dicots

Answer: A

Question. Common floral reward provided by plants to pollinator are
(a) Nectar and pollen
(b) Pollen and enzymes
(c) Hormones and nectar
(d) All of these

Answer: A

Question. Pollen pistil interaction is
(a) More than one option is correct
(b) Dynamic process
(c) Chemically mediated process
(d) Genetically controlled process

Answer: A

Question. Emasculation
(a) Prevent self-pollination in female parent
(b) Prevent cross pollination in female parent
(c) Prevent cross pollination in male parent
(d) Prevent self-pollination in male parent

Answer: A

Question. The cylindrical portion below the level of cotyledons on embryonal axis is
(a) Hypocotyl
(b) Radicle
(c) Plumule
(d) Epicotyl

Answer: A

Question. Suitable environmental conditions for seed germination are
(a) Adequate moisture, suitable temperature and oxygen
(b) Adequate moisture, low temperature, light
(c) Adequate moisture, light, anaerobic conditions
(d) Light, water, absence of oxygen

Answer: A

Question. Pericarp is dry in
(a) Groundnut, mustard
(b) Guava, mango, mustard
(c) Mango, groundnut, orange
(d) Orange, guava, mango

Answer: A

Question. Mark the incorrect statement
(a) Cells of tapetum and endothecium show increase in DNA contents by endomitosis and polyteny
(b) Sporogenous tissue, occupies the centre of each microsporangium
(c) Outer three layers of anther wall are protective in function
(d) Ploidy level of microspore tetrad is haploid

Answer: A

Question. Which of the following statement is applicable for all flowering plants?
(a) Non-motile and morphologically dissimilar gametes
(b) Monosiphonous pollen tube
(c) Presence of pollinium
(d) Division of generative cell after pollination

Answer: A

Question. Which statement is incorrect?
(a) Intine is the inner wall of pollen grain and exhibit fascinating array of patterns and designs
(b) The mature pollen grains has two cells, the bigger is vegetative cell and the smaller is generative cell which floats in cytoplasm of vegetative cell
(c) Carrot grass pollens cause pollen allergy
(d) Pollen grains of pea and rose maintain viability for months

Answer: A

Question. In papaya male and female flowers are present on different plants. It permits
(a) Xenogamy
(b) Geitonogamy
(c) Autogamy
(d) Both autogamy and geitonogamy

Answer: A

Question. Select incorrect statement regarding microsporogenesis in an anther
(a) Each microsporogenesis involves one meiosis and two mitosis
(b) Large number of microspore mother cells differentiate in one pollen sac
(c) Microspore tetrads may be tetrahedral or isobilateral
(d) It consumes tapetum and middle layers

Answer: A

Question. In castor, proliferation of the outer integumentary cells at micropylar region
(a) Stores sugary substances
(b) Attract ants and helps in myrmecophily
(c) Lacks hygroscopic ability
(d) Is called epiblast

Answer: A

Question. An angiospermic plant is having 24 chromosomes in its leaf cells. The number of chromosomes present in synergid, pollen grain, nucellus & endosperm will be respectively
(a) 12, 12, 24, 36
(b) 12, 12, 12, 36
(c) 8, 8, 12, 36
(d) 12, 12, 12, 72

Answer: A