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Sexual Reproduction In Flowering Plants

554 Questions Start Allen Test
All Exams Allen Errorless
MHCET 2000, 06; MP PMT 2004, 12 Q151 Errorless FERTILIZATION MCQ
When pollen tube enters by integuments, then the process is called
A.
Mesogamy
B.
Porogamy
C.
Chalazogamy
D.
Pseudogamy
AIIMS 2000; CPMT 2003 Q152 Errorless FERTILIZATION MCQ
Growth of pollen tube towards embryo sac is
A.
Geotropism
B.
Thigmotaxis
C.
Chemotaxis
D.
Phototaxis
CPMT 2000; BHU 2008 Q153 Errorless Critical Thinking MCQ
If the diploid number of an angiospermic plant is 24, the number of chromosomes in the pollen grain, endosperm and integument will be
A.
12, 36, 12
B.
12, 24, 36
C.
12, 12, 36
D.
12, 36, 24
MP PMT 1999 Q154 Errorless Microsporogenesis MCQ
In a young anther the four rows of cells which later produce pollen are called
A.
Antheridium
B.
Archesporium
C.
Tapetum
D.
Zoosporangium
BHU 1999; AMU (Med.) 2005,10; CPMT 2005; Kerala PMT 2007; J & K CET 2010, 12; Odisha JEE 2010; CBSE PMT 2014; MH CET 2015 Q155 Errorless POLLINATION MCQ
Geitonogamy involves [NCERT Pg. No. 12]
A.
Fertilization of a flower by the pollen from a flower of another plant in the same population
B.
Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population
C.
Fertilization of a flower by the pollen from another flower of the same plant
D.
Fertilization of a flower by the pollen from the same flower
MP PMT 1999 Q156 Errorless Embryo and endosperm MCQ
Formation, growth and development of a new individual beginning from egg is known as
A.
Embryology
B.
Cytology
C.
Genetics
D.
Ethnobotany
BHU 1999; AIEEE Pharmacy 2003 Q157 Errorless Critical Thinking MCQ
Secondary nucleus in the middle of an embryo sac of angiosperms is
A.
Diploid
B.
Triploid
C.
Tetraploid
D.
Haploid
KCET 1999 Q158 Errorless Critical Thinking MCQ
Which of the following four phases, in the post emergence life of an angiospermic plant, begins just after germination of seed and ends when the plant develops the capacity to reproduce
A.
Death
B.
Ageing
C.
Maturity
D.
Juvenility
CPMT 1999; JIPMEER 2001; MP PMT 2006 Q159 Errorless Self Evaluation Test MCQ
Most resistant biological material is An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is[CBSE PMT (Pre.) 2012; NEET (Karnataka) 2013] Or Which of the following plant product is the hardest [BHU 2006]
A.
Ligin
B.
Cellulose
C.
Suberin
D.
Sporopolenin
AIIMS 1999 Q160 Errorless Assertion and Reason MCQ
Assertion: In hemianatropous ovule, the funicle lies parellel to body of ovule. Reason: Here, body of ovule has rotated by 90Ā°.
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.
CPMT 1998 Q161 Errorless Megasporogenesis MCQ
The formation of embryo sac is called
A.
Megasporogenesis
B.
Megagametogenesis
C.
Micro gametogenesis
D.
None of these
MP PMT 1998; BHU 2002 Q162 Errorless POLLINATION MCQ
Cross pollination in crop plant is known as
A.
Autogamy
B.
Allogamy
C.
Cleistogamy
D.
Chasmogamy
KCET 1998 Q163 Errorless POLLINATION MCQ
Flowers preventing self-pollination is called
A.
Dichogamy
B.
Protandry
C.
Herkogamy
D.
Protogyny
CBSE PMT 1998; BHU 2002 Q164 Errorless Embryo and endosperm MCQ
The embryo in sunflower has
A.
No cotyledon
B.
One cotyledon
C.
Two cotyledons
D.
Many cotyledons
AIIMS 1998 Q165 Errorless Assertion and Reason MCQ
Assertion : Endosperm is a nutritive tissue and it is triploid. Reason: Endosperm is formed by fusion of secondary nucleus to second male gamete. It is used by developing embryo.
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.
RPMT 1997 Q166 Errorless POLLINATION MCQ
The mature stigma is either rough or sticky in
A.
All types of flowers
B.
Water pollinated flowers
C.
Wind pollinated flowers
D.
All of these
MP PMT 1997, 2003 Q167 Errorless FERTILIZATION MCQ
Double fertilization was first discovered by Nawaschin (1898) in
A.
Lilium and Fritillaria
B.
Mango and sugarcane
C.
Papaya and pea
D.
Brassica and Candytuft
RPMT 1997; AFMC 2001 Q168 Errorless FERTILIZATION MCQ
The phenomenon of syngamy (fertilization) in angiosperms was discovered by
A.
Svedberg
B.
Strasburger
C.
Nawaschin
D.
Coulter and Chamberlin
MP PMT 1997 Q169 Errorless FERTILIZATION MCQ
In an angiospermic plant, endosperm is formed due to fertilization of secondary nucleus but it is absent in some of the seeds viz. pea, bean, phaseolus (moong) etc. It is due to lack of
A.
Certain enzymes
B.
Dicotyledonous hormone
C.
Growth hormone
D.
None of the above
CBSE PMT 1997 Q170 Errorless Embryo and endosperm MCQ
If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be
A.
Haploid
B.
Triploid
C.
Tetraploid
D.
Pentaploid
NCERT; CBSE PMT 1997; Pb. PMT 2004 Q171 Errorless Parthenocarpy MCQ
Which plant will lose its economic value, if its fruits are produced by induced parthenocarpy
A.
Grape
B.
Pomegranate
C.
Orange
D.
Banana
CBSE PMT 1996 Q172 Errorless Microsporogenesis MCQ
How many pollen grains are formed from 10 microspore mother cells by meiosis
A.
80
B.
40
C.
20
D.
10
CPMT 1996; Odisha JEE 2005, 11 Q173 Errorless Megasporogenesis MCQ
Stalk with which ovules remain attached to placenta is called [NCERT Pg. No. 9]
A.
Funicle
B.
Raphe
C.
Hilum
D.
Chalaza
MP PMT 1996 Q174 Errorless Megasporogenesis MCQ
The ovule in pea are Or Ovule of Capsella is [RPMT 1995]
A.
Anatropous
B.
Hemianatropous
C.
Campylotropous
D.
Amphitropous
CBSE PMT 1996; Kerala PMT 2004 Q175 Errorless FERTILIZATION MCQ
In angiosperm, triple fusion is necessary for the formation of
A.
Seed coat
B.
Fruit wall
C.
Embryo
D.
Endosperm