Plant Growth and Development Quiz | Plant Growth and Development Multiple Choice Questions and Answers

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Questions
1 Etiolation is characterized by
A Slender yellowish stems
B Small yellowish leave
C Subterminal hook
D All the above

Answer: All the above
2 The discovery that light induced bending of stem The Apex produces a diffusible chemical was made by
A Charles Darwin and Francis Darwin
B Boysen Jensen and Paal
C Went
D Van Overbeek

Answer: Boysen Jensen and Paal
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3 Darwin and Darwin discovered that canary grass coleoptile bends towards light only when
A It is 5 cm long
B The Seedling is growing in blue light
C Coleoptile tip is intact and exposed to light
D Nights are cooler

Answer: Coleoptile tip is intact and exposed to light
4 Plant response to environment is mainly through
A Induction of dormancy
B Abscission of parts
C Synthesis of pigments
D Growth

Answer: Growth
5 Plant growth is
A Irreversible
B Increase in size
C Localised
D All the above

Answer: All the above
6 The synthesis of amlyase in certain serials is simulated by
A GA
B IAA
C CK
D ABA

Answer: GA
7 The day neutral plant is
A Tobacco
B Tomato
C Wheat
D Oat

Answer: Tomato
8 The long day plant is
A Tomato
B Potato
C Cotton
D Spinach

Answer: Spinach
9 The short is
A Tomato
B Sunflower
C Cotton
D Potato

Answer: Potato
10 Substances which originate at the tip of stem and control growth elsewhere are
A Enzymes
B Hormones
C Vitamins
D None of the above

Answer: Hormones
11 Gibberellins were first extracted from
A Coleoptile tip
B Root tip
C Fungus
D Bacteria

Answer: Fungus
12 The term” vernalisation” was coined by
A Garner and Allard
B Darwin
C Geoffrey
D Lysenko

Answer: Lysenko
13 Bakanae disease is caused by
A Fungus
B Algae
C Bacteria
D Virus

Answer: Fungus
14 Growth is a
A Reversible increase in size
B Reversible increase in shape
C Irreversible increase in size
D None of the above

Answer: Irreversible increase in size
15 The rosette habit of cabbage can be changed drastically by the application of
A GA
B IAA
C ABA
D CK

Answer: GA
16 Ethylene is mainly responsible for
A Formation of flower
B Formation of root hair
C Ripening of fruits
D Formation of fruit

Answer: Ripening of fruits
17 The growth of clans dishes from growth of animals in being
A Localised
B Diffused
C Localised and diffused
D None of the above

Answer: Localised
18 The maximum growth phase is
A Lag phase
B Steady phase
C Log Phase
D Senescent phase

Answer: Log Phase
19 A natural growth regulator is
A NAA
B 2,4-D
C Benzaldehyde
D Ethylene

Answer: Ethylene
20 An excised leaf does not turn yellow if it is induced to root . This is attributed to the synthesis in root of
A Ethylene
B Cytokinins
C Gibberellins
D Auxins

Answer: Cytokinins

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