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Plant Growth And Development

339 Questions Start Allen Test
All Exams Allen Errorless
BHU 2003 Q76 Errorless Cytokinin MCQ
An excised leaf does not turn yellow if it is induced to root. This is attributed to synthesis in root of or Leaf aging is retarded by Or The cut flowers and vegetables can be kept fresh a long period by this plant hormone[Kerala PMT 2004; KCET 2012]
A.
Ethylene
B.
Cytokinins
C.
Gibberellins
D.
Auxins
MHCET 2003 Q77 Errorless Ethylene MCQ
Which hormone causes stunted growth in pea
A.
Gibberellic acid
B.
Auxin
C.
Cytokinin
D.
Ethylene
CPMT 2003 Q78 Errorless ABA and Other growth regulators MCQ
Phytotron is
A.
Fish culture
B.
Plant hormone
C.
Animal hormone
D.
None of these
RPMT 2002; Pb. PMT 2004; WB JEE 2016 Q79 Errorless Gibberellins MCQ
Dormancy of seed is broken by
A.
Auxin and Cytokinin
B.
Gibberellins and ethylene
C.
Ethylene and auxin
D.
Cytokinin and auxin
MP PMT 2001 Q80 Errorless Plant Growth Regulators MCQ
Who for the first time speculated the presence of organ forming substances in plant now called hormones
A.
Darwin
B.
Went
C.
Yabuta
D.
Sachs
MP PMT 2001 Q81 Errorless Gibberellins MCQ
Apical dominance is not affected by
A.
Indole acetic acid
B.
Gibberellic acid
C.
Indoie acetaldehyde
D.
Indole butyric acid
CBSE PMT 2001 Q82 Errorless ABA and Other growth regulators MCQ
Which of the following hormone is responsible for senescence
A.
GA
B.
ABA
C.
Auxin
D.
Cytokinin
CBSE PMT 2000; KCET 2007 Q83 Errorless Auxin MCQ
Auxins originates at the tip of the stem and controls growth elsewhere. The movement of auxin is largely
A.
Basipetal
B.
Acropetal
C.
Acropetal and basipetal
D.
Centropetal
CBSE PMT 2000, 03; Manipal 2005; J & K CET 2008; AFMC 2009 Q84 Errorless Cytokinin MCQ
Which of the following is a coconut milk factor
A.
Auxin
B.
Cytokinin
C.
Morphactin
D.
None of the above
MHCET 2000; MP PMT 2006; WB JEE 2008; AIIMS 2012; CBSE PMT 2014 Q85 Errorless ABA and Other growth regulators MCQ
Which one of the following plant hormones (Phytohormone) is known as a stress hormone
A.
Gibberellins
B.
Kinetin
C.
Auxin
D.
Abscisic acid
Kerala PMT 2000 Q86 Errorless Critical Thinking MCQ
First experiment related to the method of hydroponics were done by
A.
Knop
B.
Hill
C.
Arnon
D.
Sachs
BHU 2000, 01 Q87 Errorless Self Evaluation Test MCQ
Crescograph was prepared by
A.
Bose
B.
Strasburger
C.
Went
D.
None of the above
MP PMT 1999 Q88 Errorless Growth MCQ
The growth in plants is
A.
Limited
B.
Unlimited
C.
Unlocalised
D.
None of these
Pb. PMT 1999; RPMT 1999; CBSE PMT 2004 Q89 Errorless Growth MCQ
Highest growth is found in
A.
Static phase
B.
Exponential phase
C.
Descending phase
D.
Lag phase
CBSE PMT 1999 Q90 Errorless Auxin MCQ
Differentiation of shoot is controlled by
A.
High gibberellin : cytokinin ratio
B.
High cytokinin : auxin ratio
C.
High auxin : cytokinin ratio
D.
High gibberellin : auxin ratio
CPMT 1999 Q91 Errorless Auxin MCQ
Which of the following ion is pulled out in apoplast by the auxin during growth
A.
Na+
B.
K+
C.
Mg2+
D.
H+
MP PMT 1999 Q92 Errorless Auxin MCQ
The presence of auxins in a solution could be tested by
A.
Avena sativa stem tip test
B.
Carbon tetrachloride test
C.
Iodine test
D.
Defoliation test
RPMT 1999; BHU 2005; AIPMT 2015 Q93 Errorless Auxin MCQ
Bioassay for auxin is
A.
Avena curvature test
B.
Green leaf test
C.
Dwarf maize test
D.
Cell division test
RPMT 1999; JIPMER 2002; NEET (Phase-I) 2016 Q94 Errorless Auxin MCQ
Avena coleoptile test detects the presence of
A.
IAA
B.
GA
C.
NAA
D.
BA
MP PMT 1999; CBSE PMT 2004; DPMT 2007; J & K CET 2012 Q95 Errorless Gibberellins MCQ
Cell elongation in internodal region takes place due to
A.
Gibberellins
B.
Ethylene
C.
Cytokinins
D.
Indole acetic acid
MP PMT 1999 Q96 Errorless Gibberellins MCQ
Gibberellins were first discovered in fungal genus
A.
Mucor
B.
Rhizopus
C.
Agaricus
D.
Fusarium
CBSE PMT 1999; causes stomatal closure AIIMS 1999, 2002; DPMT 2006; WB JEE 2008 Q97 Errorless ABA and Other growth regulators MCQ
Which plant hormone promotes seed, bud dormancy and Or Presence of which of the following in seed is associated with dormancy [CBSE PMT 1999; BVP 2002] Or Leaf abscission, fruit fall, bud dormancy occurs by which Phytohormone 00101 [CPMT 1998; AFMC 2004; BHU 2006; J & K CET 2010]
A.
IAA
B.
Abscisic acid
C.
GA1
D.
Cytokinin
MP PMT 1998 Q98 Errorless Growth MCQ
Plant growth in length is increased by
A.
Apical meristem
B.
Lateral meristem
C.
Dermatogen
D.
Periblem
MP PMT 1998 Q99 Errorless Growth MCQ
The rate of growth of any organism follows Or Typical growth curve in plants is [AIPMT (Cancelled) 2015]
A.
Hyperbola curve
B.
J-shaped curve
C.
Sigmoid curve
D.
Parabola curve
CBSE PMT 1998 Q100 Errorless Auxin MCQ
Which one among the following chemical is used for causing defoliation of forest trees
A.
Amo-1618
B.
Phosphon-D
C.
Maleic hydrazide
D.
2, 4-D