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Sexual Reproduction In Flowering Plants

307 Questions Start Errorless Test
All Exams Allen Errorless
CPMT 2003; CBSE PMT 2003 Q126 Errorless 4. Fertilization MCQ
Pollen tube discharge its gametes in [NCERT Pg. No. 17]
A.
Synergids
B.
Antipodals
C.
Central cell
D.
None of these
MP PMT 2003 Q127 Errorless 4. Fertilization MCQ
The formation of embryo without fusion of gametes is termed, as
A.
Apospory
B.
Isogamy
C.
Apogamy
D.
Syngamy
BHU 2003 Q128 Errorless 5. Embryo and endosperm MCQ
Which of the following workers are related as ecologist, palaeobotanist and embryologist
A.
B. Sahni, R. Mishra, P. Maheshwari
B.
R. Mishra, B. Sahni, P. Maheshwari
C.
B. Sahni, P. Maheshwari, R. Mishra
D.
P. Maheshwari, R. Mishra, B. Sahni
CBSE PMT 2002 Q129 Errorless 1. Microsporogenesis MCQ
In angiosperm, all 4 microspores of tetrad are covered by a layer which is formed by
A.
Callose
B.
Cellulose
C.
Sporopollenin
D.
Pectocellulose
CBSE PMT 2002 Q130 Errorless 2. Megasporogenesis MCQ
What is the direction of micropyle in anatropous ovule
A.
Left
B.
Right
C.
Upward
D.
Inverted
JIPMER 2002 Q131 Errorless 2. Megasporogenesis MCQ
Collar like outgrowth arising from the base of ovule and forming a sort of third integument is known as
A.
Coma
B.
Caruncle
C.
Aril
D.
Operculum
MHCET 2002; AMU (Med.) 2010 Q132 Errorless 2. Megasporogenesis MCQ
Synergids of the polygonum type embryo sac are
A.
Haploid
B.
Diploid
C.
Triploid
D.
Polyploid
RPMT 2002 Q133 Errorless 2. Megasporogenesis MCQ
The haploid cell which divides by mitosis to form embryosac is [NCERT Pg. No. 11]
A.
Megaspore mother cell
B.
Microspore mother cell
C.
Functional megaspore
D.
Non-functional megaspore
NCERT; J & K CET 2002; MH CET 2006 Q134 Errorless 3. Pollination MCQ
Contrivances for self pollination are
A.
Bisexuality
B.
Homogamy
C.
Cleistogamy
D.
All of these
CBSE PMT 2002 Q135 Errorless 4. Fertilization MCQ
Which of the following is without exception in angiosperms
A.
Secondary growth
B.
Presence of vessels
C.
Double fertilization
D.
Autotrophic nutrition
MP PMT 2002; BHU 2004 Q136 Errorless 5. Embryo and endosperm MCQ
The endosperm in angiosperms develops from
A.
Micropylar polar nucleus
B.
Chalazal polar nucleus
C.
Secondary nucleus
D.
Zygote
AIIMS 2002 Q137 Errorless 5. Embryo and endosperm MCQ
Xenia and metaxenia terms are related with
A.
Pollen culture
B.
Only endosperm
C.
Xylem and phloem
D.
Pollen and endosperm
MHCET 2002 Q138 Errorless 9. Self Evaluation Test MCQ
Siphonogamy in angiosperm means
A.
Tube like male gametes
B.
Motile male gametes
C.
Male gametes produced in a tube
D.
Male gametes are carried in a tube
AIIMS 2002 Q139 Errorless 10. Assertion and Reason MCQ
Assertion : The two cotyledons in seed are embryonic leaves. Reason:The embryo contains radicle and plumule.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
AIIMS 2002, 13 Q140 Errorless 10. Assertion and Reason MCQ
Assertion : The megaspore mother cell divides mitotically to produce four spores. Reason: Megaspore mother cells are diploid and megaspore is haploid.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
MH CET 2001; MP PMT 2007; CBSE PMT 2007 Q141 Errorless 1. Microsporogenesis MCQ
Male gametes in angiosperms are formed by the division of
A.
Microspore
B.
Generative cell
C.
Vegetative cell
D.
Microspore mother cell
AIIMS 2001 Q142 Errorless 1. Microsporogenesis MCQ
Pollinia is found in which of the following plant family
A.
Asteraceae
B.
Myrtaceae
C.
Malvaceae
D.
Asclepiadaceae
KCET 2001; Manipal 2005; J & K CET 2010; CBSE PMT (Pre.) 2010 Q143 Errorless 3. Pollination MCQ
Pollination by wind is called
A.
Geitnogamy
B.
Anemophily
C.
Autogamy
D.
None of the above
MP PMT 2001; J & K CET 2012 Q144 Errorless 4. Fertilization MCQ
Through which route the pollen tube enters the ovule
A.
Chalaza
B.
Micropyle
C.
Funiculus
D.
All of these
MHCET 2000; MP PMT 2006 Q145 Errorless 1. Microsporogenesis MCQ
Haploids can be obtained from
A.
Pollen grains
B.
Root apex
C.
Shoot apex
D.
Embryo
MHCET 2000, 02; BHU 2001; RPMT 2002; MP PMT 2005; DPMT 2006; CPMT 2009; AMU (Med.) 2012 Q146 Errorless 1. Microsporogenesis MCQ
The function of innermost layer of pollen sac, tapetum is
A.
Dehiscence
B.
Mechanical
C.
Protective
D.
Nutritive
MP PMT 2000; CPMT 2009 Q147 Errorless 1. Microsporogenesis MCQ
Tapetum is a part of
A.
Male gametophyte
B.
Female gametophyte
C.
Ovary wall
D.
Anther wall
BHU 2000 Q148 Errorless 1. Microsporogenesis MCQ
If a sporangium is derived from a single cell, it is called
A.
Leptosporangiate
B.
Eusporangiate
C.
Heterosporangiate
D.
Homosporangiate
CPMT 2000 Q149 Errorless 3. Pollination MCQ
Dichogamy which helps in cross pollination is a floral mechanism in which
A.
Pollen sac and stigma are at different heights
B.
Anther and stigma mature at different times
C.
Structure of pollen sac and stigma functions as hurdles
D.
Pollen grain is unable to germinate on the stigma of the same flower
CPMT 2000; CBSE PMT 2001 Q150 Errorless 3. Pollination MCQ
Anemophilous pollination is mainly observed in
A.
Gramineae
B.
Annonaceae
C.
Papilionaceae
D.
Euphorbiaceae