Q.1 Find out the odd one –
(1) Micropyle
(2) Embryo sac
(3) Nucellus
(4) Pollen grain
Q.2 The ovule attached to the placenta of ovary wall by
(1) raphae
(2) micropyle
(3) funicle
(4) hilum
Q.3 Function of filiform apparatus is to –
(1) recognise the suitable pollen at stigma.
(2) stimulate division of generative cell.
(3) produce nectar.
(4) guide entry of pollen tube.
Q.4 Which one of the following statements is correct?
(1) The seed in grasses is not endospermic.
(2) Mango is a parthenocarpic fruit.
(3) A proteinaceous aleurone layer is present in maize grain
(4) A sterile pistil is called a staminode.
Q.5 An angiosperm male plant with 24 chromosomes in its pollen mother cells is crossed with female plant bearing 24 chromosomes in its root cells. What would be the ploidy of embryo and endosperm respectively formed after his cross?
(1) 24 and 48
(2) 24 and 24
(3) 48 and 72
(4) 24 and 36
Q.6 Cross pollination does not occur in
(1) allogamous flowers
(2) geitonogamous flowers
(3) cleistogamous flowers
(4) chasmogamous flowers
Q.7 Select the plants pollinated by water
I. Water hyacinth
II. Zostera
III. Amorphophallus
IV. Vallisneria
V. Yucca
(1) I, IV and V
(2) II and V
(3) II and IV
(4) II, III and IV
Q.8 Which of the following feature (s) is/are common to both wind and water pollinated flowers?
I. Pollen grains are long and ribbon-like
II. Stigma is large and feathery
III. The flowers are not colourful
IV. The flowers do not produce nectar
(1) III and IV
(2) II and III
(3) I and II
(4) Only II
Q.9 Read the following statements and identify the correct options given
I. Angiosperms range in size from microscopic Wolffia to tall trees of Eucalyptus.
II. In angiosperms, the seeds are enclosed by fruits.
III. Double fertilisation is an event unique to angiosperms.
IV. In angiosperms, each cell of an embryo sac is diploid.
V. In angiosperms, the zygote develops into an endosperm.
(1) I, II and IV
(2) I, II and V
(3) I, II and III
(4) II, III and IV
Q.10 Cross pollination through insect agent is called
(1) anthropophily (2) malacophily
(3) entomophily (4) omithophily
Q.11 Cleistogamous flowers are –
(1) bisexual flowers which remain opened
(2) bisexual flowers which remain closed
(3) open female flower
(4) open male flower
Q.12 Emasculation ensures cross pollination in
(1) staminate flower
(2) bisexual flower
(3) neuter flower
(4) pistillate flower
Q.13 Which part of the plant contain sporogenous tissue?
(1) Pollen (2) Microspores
(3) Young anther (4) Stamen
Q.14 Transfer of pollen grains from the anther to the stigma of another flower of the different plant is known as
(1) Autogamy (2) Geitonogamy
(3) Xenogamy (4) Cleistogamy
Q.15 The embryo sac of angiosperms contains
(1) 3 celled egg apparatus, 3 antipodal cell and 2 polar nuclei.
(2) 2 celled egg apparatus, 3 antipodal cell and 2 polar nuclei.
(3) 3 celled egg apparatus, 2 antipodal cell and I polar nuclei.
(4) 3 celled egg apparatus, 1 antipodal cell and 2 polar nuclei.
Q.16 Zygote is resulted by the process –
(1) Isogamy (2) Anisogamy
(3) Monogamy (4) Syngamy
Q.17 Developing pollen is nourished by
(1) tapetum
(2) endothecium
(3) epidermis
(4) spore mother cell
Q.18 During the process of sexual reproduction in flowering plants, double fertilisation involves
(1) fertilisation of egg cell by two male gametes.
(2) fertilisation of egg cell and a central cell by two male gametes brought by same pollen tube.
(3) fertilisation of egg cell and a central cell by two male gametes brought by different pollen tube.
(4) fertilisation of two egg cells by two male gametes brought by same pollen tube.
Q.19 Endosperm, a product of double fertilisation in angiosperms is absent in the seeds of –
(1) gram
(2) orchids
(3) maize
(4) Both (1) and (2)
Q.20 PEN stands for
(1) Primary Endosperm Nucleus
(2) Polyembryo Nourishment
(3) Primary Endosperm Nourishment
(4) Primary Embryo Nourishment
Q.21 In which of the following plants, pollen is released before the stigma becomes receptive in the same flower?
(1) Allium
(2) Colchicum
(3) Datura
(4) Solanum
Q.22 Identify the pair of wrong statements in the following.
I. Intine of pollen grain in made up of sporopollenin.
II. Pollen grains are well preserved as fossils because of the presence of sporopollenin.
III. Enzymes can degrade the organic material of the exine of pollen grain.
IV. Sporopollenin can withstand high temperatures strong acids and alkali.
(1) III and IV
(2) I and III
(3) I and II
(4) II and III
Q.23 Wind pollinated plants generally do not show the following character –
(1) feathery stigma
(2) single ovule in the ovary
(3) well exposed stamens
(4) flowers are large and colourful
Q.24 The germ pores in the pollen grain are the regions
(1) that can withstand high temperature and strong acids and alkalies
(2) through which sperms are released into the female gametophyte
(3) which are made up of lignin and suberin
(4) which lack sporopollenin
Q.25 In castor and maize plants –
(1) autogamy is prevented but not geitonogamy.
(2) both autogamy and geitonogamy are prevented.
(3) male and female flowers are borne by different plants.
(4) the anthers and stigma are placed at different positions to encourage cross pollination.
Q.26 Nucellar polyembryony is reported in species of
(1) Gossypium (2) Triticum
(3) Brassica (4) Citrus
Q.27 In which one of the following pollination is autogamous?
(1) Xenogamy (2) Chasmogamy
(3) Cleistogamy (4) Geitonogamy
Q.28 If the number of chromosomes in egg cell is 8, then what is the number of chromosomes in endosperm?
(1) 24 (2) 8
(3) 16 (4) 12
Q.29 Ruminate endosperm is found in the seeds of family
(1) Compositae
(2) Cruciferae
(3) Euphorbiaceae
(4) Annonaceae
Q.30 Pericarp is formed of –
(1) endosperm
(2) ovary wall
(3) tapetum
(4) epidermis
Q.31 Ubisch bodies are secreted by
(1) tapetum
(2) exine
(3) microspore mother cells
(4) endothecium
Q.32 Male gametophyte of angiosperms is reduced to
(1) one cell
(2) two cells
(3) three cells
(4) four cells
Q.33 7-celled and 8-nucleated structure in angiosperms, is known as –
(1) embryo sac
(2) endosperm
(3) embryo
(4) egg apparatus
Q.34 Emasculation is concerned with
(1) hybridisation
(2) clonal selection
(3) mass selection
(4) pure line selection
Q.35 Egg apparatus of angiosperms consists of
(1) one synergid and two egg cells
(2) two synergids and one egg cell
(3) one central ceil, two synergids and three antipodal cells
(4) one egg cell, two polar nuclei and three antipodal cells
Q.36 Sporopollenin, a chemical substance is found in
(1) endothecium of anther
(2) tapetum of anther
(3) intine of pollen grain
(4) exine of pollen grain
Q.37 What is the function of germ pore?
(1) Emergence of radical.
(2) Absorption of water seed germination.
(3) Initiation of pollen tube.
(4) Release of male gametes.
Q.38 Which one of the following statements is wrong?
(1) When pollen is shed at two-celled stage, double fertilisation 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.
Q.39 Plants with ovaries having only one or a few ovules, are generally pollinated by –
(1) bees (2) butterflies
(3) birds (4) wind
Q.40 Male gametes in angiosperms are formed by the division of –
(1) microspore
(2) generative cell
(3) vegetative cell
(4) microspore mother cell
Q.41 Unisexuality of flowers prevents
(1) autogamy but not geitonogamy.
(2) both geitonogamy and xenogamy.
(3) gietonogamy but not xenogamy.
(4) autogamy and geitonogamy.
Q.42 Which one of the following is surrounded by a callose wall?
(1) Microspore mother cell
(2) Male gamete
(3) egg
(4) Pollen grain
Q.43 An enzyme that can stimulate germination of barley seeds is
(1) lipase
(2) protease
(3) invertase
(4) a-amylase
Q.44 Embryo developed from nucleus and integument is known as –
(1) apospory
(2) apogamy
(3) apomixis
(4) adventive embryony
Q.45 Removal of anthers at the time of plant breeding is called
(1) emasculation
(2) anthesis
(3) pollination
(4) fertilisation
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Biodiversity and Conservation l MCQs for NEET ug NTA ABHYAS
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