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In which of the following cases, staminate and pistillate flowers are present on the same plant?
(1) Date palm and papaya
(2) Coconut and castor
(3) Cucurbits adn Hemp
(4) Chara and Vallisneria

Which is not a basic feature of reproduction?
(1) Cell division
(2) Duplication of cellular apparatus
(3) Formation of reproductive units
(4) Life span

Development up to two-celled stage of male gametophyte is
(1) in-situ in 60% of angiosperms
(2) in-situ in 40% of angiosperms
(3) Precocious in 100% of angiosperms
(4) ex-situ in 60% of angiosperms

The egg shows cytoplasmic polarity opposite to synergids in the presence of 
(1) Chalazal vacuole
(2) Micropylar nucleus
(3) Thicker wall at chalazal end
(4) Micropylar vacuole as well as thicker wall

Which one of the following flowers produce assured seed set even in the absence of pollinators?
(1) Homogamous
(2) Geitonogamous
(3) Cleistogamous
(4) Chasmogamous

Outbreeding device which prevents autogamy but not geitonogamy is
(1) Monoecious as in castor
(2) Dioecious as in papaya
(3) Self incompatibility as in tobacco
(4) Monocliny as in Hibiscus

Majority of sexually reproducing organisms have which of the following condition for gametes?
(1) Both male and female gametes are motile
(2) Male gamete is motile and the female gamete is non-motile
(3) Male gamete is non-motile and the female gamete is motile
(4) Both male and female gametes are non-motile

There are 10 flowers in one individual plant of Datura. In each microsporangium of every stamen of all the flowers, there are 20 microspore mother cells. How many pollen grains are formed from that plant?
(1) 4,000
(2) 1,600
(3) 16,000
(4) 320

How many divisions are necessary for the complete development of male gametophyte from pollen mother cell?
(1) One meiotic and two mitotic divisions
(2) One meiotic and one mitotic divisions
(3) Two meiotic and one mitotic divisions
(4) Two mitotic cell divisions

Effect of pollen grain on the characters of endosperm is called
(1) Metaxenia
(2) Nemec phenomenon
(3) Xenia
(4) Mesogamy

Embryogeny in flowering plants is
(1) Meroblastic and endoscopic
(2) Meroblastic and exoscopic
(3) Holoblastic and exoscopic
(4) Holoblastic and endoscopic

Find odd one out with respect to the plants where endosperm is completely consumed by developing embryo
(1) Pea and beans
(2) Ground nut and gram
(3) Castor and coconut
(4) Orchid and mustard

The hilum and micropyle lie side by side very close to each other in
(1) Anatropous ovule
(2) Campylotropous ovule
(3) Amphitropous ovule
(4) Circinotropous ovule

When the ovule is curved and embryo sac becomes horse shoe shaped, such an ovule is present in
(1) Lemna, poppy
(2) Piper, Polygonum
(3) Ranunculus
(4) Leguminosae, cruciferae

The largest cell of female gametophyte is
(1) Antipodal cell
(2) Helper cell
(3) Binucleate central cell
(4) Wall-less central cell

Redicle tip in the dicot embryogeny is formed by
(1) Hypobasal tier
(2) Epibasal tier
(3) Hypophysis
(4) Micropylar suspensor cell

Choose the mismatched option with respect to pollination
(1) Wind - Cannabis - Anemophily
(2) Birds - Adansonia - Ornithophily
(3) Water - Zostera - Hydrophily
(4) Insects - Salvia - Entomophily

Both pollen grains and stigma are sticky in
(1) Hydrophilous flower
(2) Entomophilous flower
(3) Anemophilous flower
(4) More than one option is correct

Fertlization by the entry of pollen tube through integument is called
(1) Chalazogamy
(2) Mesogamy
(3) Porogamy
(4) Basogamy

What is incorrect for apomixis?
(1) Is genetically controlled
(2) To produce seeds without fertilization
(3) Prevents the segregation of traits of the hybrid varieties
(4) Leads to inbreeding depression and decreases hybrid vigourness

The most resistant organic material known which makes up the outermost layer of pollen wall is
(1) Pectin
(2) Cellulose
(3) Sporopollenin
(4) Lignin

The pollen viability period of rice and pea respectively, is
(1) 30 minutes and several months
(2) Several months and 30 minutes
(3) Few days and few months
(4) Few days in both the cases

Integumented megasporangium is
(1) Ovule
(2) Pollen sac
(3) Pollen grain
(4) Embryo sac

The ploidy level of nucellus and female gametophyte respectively is
(1) n, n
(2) n, 2n
(3) 2n, n
(4) 2n, 2n

Geitonogamy is
(1) Genetically autogamous
(2) Ecologically autogamous
(3) Genetically allogamous
(4) Functionally autogamous

Examples of water pollinated flowers are
(1) Zostera, Lotus, water lily
(2) Lotus, Vallisneria, Hydrilla
(3) Potamogeton, Vallisneria, Lotus
(4) Vallisneria, Hydrilla, Zostera

Pollen robbers
(1) Consume pollen or nectar
(2) Are effective in bringing about pollination
(3) Do not visit flowers for pollen
(4) Take pollen from other insects

Double endosperm is found in
(1) Wheat
(2) Rice
(3) Pea
(4) Coconut

The sheath enclosing plumule and radicle respectively in monocot seed are
(1) Coleoptile and coleorhiza
(2) Coleorhiza and coleoptile
(3) Scutellum and epiblast
(4) Aleurone layer and pericarp

Perispermic seeds are
(1) Castor, sunflower
(2) Black pepper, beet
(3) Maize, beet
(4) Barley, maize

The type of pollination which brings genetically different types of pollen on the stigma is
(1) Autogamy
(2) Xenogamy
(3) Geitonogamy
(4) Cleistogamy

Pollen pistil interaction is
(1) Chemically mediated process
(2) Dynamic process
(3) Genetically controlled process
(4) More than one option is correct

The cylindrical portion below the level of cotyledons on embryonal axis is
(1) Epicotyl
(2) Hypocotyl
(3) Radicle
(4) Plumule

Suitable environmental conditions for seed germination are
(1) Adequate moisture, light, anaerobic conditions
(2) Adequate moisture, low temperature, light
(3) Adequate moisture, suitable temperature and oxygen
(4) Light, water, absence of oxygen

Select incorrect statement regarding microsporogenesis in an anther
(1) Large number of microspore mother cells differentiate in one pollen sac
(2) Each microsporogenesis involves one meiosis and two mitosis
(3) Microspore tetrads may be tetrahedral or isobilateral
(4) It consumes tapetum and middle layers

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
(1) 12, 12, 12, 72
(2) 8, 8, 12, 36
(3) 12, 12, 24, 36
(4) 12, 12, 12, 36

In monoecious plant like castor and maize
(1) Autogamy and allogamy are not prevented
(2) Geitonogamy is prevented
(3) Autogamy is not prevented
(4) Geitonogamy is not prevented

Pick out wrong statement.
(1) Double fertilization is unique to angiosperms
(2) Sequoia, a gymnosperm, is one of the tallest tree
(3) Exine has apertures where sporopollenin is present
(4) Exine of pollen grains is made up of sporopollenin

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.
(1) I, II are correct but III, IV are incorrect
(2) I, IV are correct but II, III are incorrect
(3) III, IV are correct but I, II are incorrect
(4) II, III are correct but I, IV are incorrect

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.
(1) All are correct
(2) All are incorrect
(3) Only I and II are correct
(4) Only II and IV are correct

Coconut water from a tender coconut is:
(1) Degenerated nucellus
(2) Immature embryo
(3) Free nuclear endosperm
(4) Innermost layers of the seed coat

Which one of the following statements is not true?
(1) Honey is made by bees by digesting pollen collected from flowers
(2) Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
(3) Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
(4) The flowers pollinated by flies and bats secrete foul odour to attract them

Pollen tablets are available in the market for
(1) In vitro fertilization
(2) Breeding Equisetum
(3) Supplementing food
(4) Ex situ conservation

Perisperm differs from endosperm in 
(1) Having no reserve food
(2) Being a diploid tissue
(3) Its formation by fusion of secondary nucleus with several sperms
(4) Being a haploid tissue

Which one of the following statements is wrong?
(1) When pollen is shed at two-celled stage, double fertilization does not take place
(2) Vegetative cell is larger than generative cell
(3) Pollen grains in some plants remain viable for months
(4) Intine is made up of cellulose and pectin

In angiosperms, functional megaspore develops into 
(1) Endosperm
(2) Pollen sac
(3) Embryo sac
(4) Ovule

Male gametes in angiosperms are formed by the division of
(1) Microspore mother cell
(2) Microspore
(3) Generative cell
(4) Vegetative cell

What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids? 
(1) 16
(2) 24
(3) 32
(4) 8

The arrangement of the nuclei in a normal embryo sac in the dicot plants is
(1) 2 + 4 + 2
(2) 3 + 2 + 3
(3) 2 + 3 + 3
(4) 3 + 3 + 2

Parthenocarpic tomato fruits can be produced by
(1) Treating the plants with phenylmercuric acetate
(2) Removing androecium of flowers before pollen grains are released
(3) Treating the plants with low concentrations of gibberellic acid and auxins
(4) Raising the plants from vernalized seeds