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Sexual Reproduction In Flowering Plants

554 Questions Start Allen Test
All Exams Allen Errorless
AIPMT 2015 Q26 Errorless Parthenocarpy MCQ
An example of a naturally occurring parthenocarpic fruit is
A.
Guava
B.
Mango
C.
Banana
D.
Apple
AIPMT (Cancelled) 2015 Q27 Errorless Critical Thinking MCQ
Which one of the following statements is not true
A.
Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
B.
The flowers pollinated by flies and bats secrete foul odour to attract them
C.
Honey is made by bees by digesting pollen collected from flowers
D.
Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
KCET 2015; NEET (Phase-I) 2016 Q28 Errorless Critical Thinking MCQ
Seed formation without fertilization in flowering plants involves the process of
A.
Polyembryony
B.
Parthenocarpy
C.
Dormancy
D.
Apomixis
AIPMT 2015 Q29 Errorless Self Evaluation Test MCQ
In angiosperms, microsporogenesis and megasporogenesis
A.
Form gametes without further divisions
B.
Involve meiosis
C.
Occur in ovule
D.
Occur in anther
MHCET 2015 Q30 Errorless Self Evaluation Test MCQ
Environmental biotic factor that helps in pollination is
A.
Air
B.
Water
C.
Wind
D.
Insects
GUJCET 2014 Q31 Errorless Embryo and endosperm MCQ
The figure given below shows stages in embryogenesis in a typical dicot (Capsella). Identify structures A, B, C and D respectively Or Which option is correct for the region produced from the apical octant (b) and basal octant (d), in Capsella type of embryonic development
A.
Suspensor, Radicle, Plumule, Hypocotyls
B.
Suspensor, Plumule, Redicle, Cotyledons
C.
Hypophysis, Radicle, Plumule, Cotyledons
D.
Suspensor, Radicle, Plumule, Cotyledons
NEET (Karnataka) 2013 Q32 Errorless Microsporogenesis MCQ
Which of the following statement is not true about somatic embryogenesis
A.
The pattern of development of a somatic embryo is comparable to that of a zygotic embryo
B.
Somatic embryos can develop from microspores
C.
Somatic embryo is induced usually by an auxin such as 2, 4-D
D.
A somatic embryo develops from a somatic cell
NEET (Karnataka) 2013 Q33 Errorless Megasporogenesis MCQ
Megaspores are produced from the megaspore mother cells after [NCERT Pg. No. 10]
A.
Mitotic division
B.
Formation of a thick wall
C.
Differentiation
D.
Meiotic division
NEET 2013 Q34 Errorless Megasporogenesis MCQ
Megasporangium is equivalent to
A.
Ovule
B.
Embryo sac
C.
Fruit
D.
Nucellus
NEET (Karnataka) 2013 Q35 Errorless POLLINATION MCQ
Animal vectors are required for pollination in
A.
Vallisneria
B.
Mulbery
C.
Cucumber
D.
Maize
NEET 2013 Q36 Errorless Embryo and endosperm MCQ
Perisperm differs from endosperm in
A.
Its formation by fusion of secondary nucleus with several sperms
B.
Being a haploid tissue
C.
Having no reserve food
D.
Being a diploid tissue
CBSE PMT (Mains) 2012 Q37 Errorless Microsporogenesis MCQ
What is the function of germ pore
A.
Emergence of radicle
B.
Absorption of water for seed germination
C.
Initiation of pollen tube
D.
Release of male gametes
WB JEE 2012 Q38 Errorless Microsporogenesis MCQ
If you want to develop hybrid seeds within a bisexual flower which of the following parts need to be removed from the same flower
A.
Stigma
B.
Ovary
C.
Anther
D.
Oviduct
Kerala PMT 2012 Q39 Errorless Megasporogenesis MCQ
Match the items in column I with those in column Il and choose the correct answer Column I Column II
Column-IColumn-II
(A)Funicle
(B)Integuments
(C)Chalaza
(D)Hilum
(E)Micropyle
(P)Small opening of ovule
(Q)Stalk of ovule
(R)Protective envelopes of ovule
(S)Junction part of ovule and stalk
(T)Basal part of the ovule
A.
A-Q; B-R; C-T; D-S; E-P
B.
A-P; B-R; C-T; D-S; E-Q
C.
A-Q; B-R; C-S; D-T; E-P
D.
A-Q; B-R; C-T; D-P; E-S
E.
A-R; B-S; C-T; D-P; E-Q
CBSE PMT (Mains) 2012 Q40 Errorless POLLINATION MCQ
Plants with ovaries having only one or a few ovules, are generally pollinated by Or Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by [NEET 2017]
A.
Bees
B.
Butterflies
C.
Birds
D.
Wind
WB JEE 2012 Q41 Errorless POLLINATION MCQ
Xenogamy is essentially a type of
A.
Cleistogamy
B.
Allogamy
C.
Autogamy
D.
Homogamy
CBSE PMT (Pre.) 2012 Q42 Errorless POLLINATION MCQ
Both, autogamy and geitonogamy are prevented in [NCERT Pg. No. 15]
A.
Papaya
B.
Cucumber
C.
Castor
D.
Maize
Kerala PMT 2012 Q43 Errorless FERTILIZATION MCQ
Which one of the following events takes place after double fertilization
A.
The pollen grain germinates on the stigma
B.
The pollen tubes enter the embryo sac
C.
Two male gametes are discharged into the embryo sac
D.
The PEN (Primary Endosperm Nucleus) develops into endosperm
E.
The male gamete fuses with egg to form a zygote
CBSE PMT (Mains) 2012 Q44 Errorless FERTILIZATION MCQ
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
848 Sexual Reproduction in Flowering Plants
Kerala PMT 2011; NEET 2013 Q45 Errorless Microsporogenesis MCQ
Study the following statements and select the correct option
(A) Tapetum nourishes the developing pollen grains
(B) Hilum represents the junction between ovule and funicle
(C) In aquatic plants such as water hyacinth and water lily, pollination is by water
(D) The primary endosperm nucleus is triploid
A.
A and B are correct but C and D are incorrect
B.
A, B and D are correct but C is incorrect
C.
B, C and D are correct but A is incorrect
D.
A and D are correct but B and C are incorrect
E.
B and D are correct but A and C are incorrect
KCET 2011 Q46 Errorless Microsporogenesis MCQ
The following is the diagram of T.S. of anther. Identify the parts labelled A, B and C 6]
A.
A-Connective tissue, B-Endothecium, C-Pollen grain
B.
A-Endothecium, B-Connective tissue C-Pollen grain
C.
A-Pollen grain, B-Connective tissue, C-Endothecium
D.
A-Endothecium, B-Pollen grain, C-Connective tissue
CBSE PMT (Mains) 2011; NEET 2017 Q47 Errorless Megasporogenesis MCQ
In angiosperms, functional megaspore develops into Or The microscopic structure in flower that contains polar nuclei is
A.
Endosperm
B.
Pollen sac
C.
Embryo sac
D.
Ovule
CBSE PMT (Pre.) 2011 Q48 Errorless POLLINATION MCQ
Wind pollination is common in
A.
Orchids
B.
Legumes
C.
Lilies
D.
Grasses
CBSE PMT (Pre.) 2011; Kerala PMT 2012; NEET (Karnataka) 2013 Q49 Errorless POLLINATION MCQ
In which one of the following pollination is autogamous Or Pollination which occurs in closed flower is known as [AFMC 1994; WB JEE 2016]
A.
Cleistogamy
B.
Geitonogamy
C.
Xenogamy
D.
Chasmogamy
WB JEE 2011 Q50 Errorless Embryo and endosperm MCQ
Ovule integument gets transformed into Or In coconut, black covering (thin layer) adherent to the kernel around the endosperm is
A.
Seed
B.
Fruit wall
C.
Seed coat
D.
Cotyledons