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1 of 25
Q.1 Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
2 of 25
Q.2 Intercalary meristems are of
- Permanent nature
- Temporary nature
- Some are permanent some temporary
- None of these
3 of 25
Q.3 Cells of fibers and tracheids elongate during
- Phase of cell division
- Phase of cell elongation
- Phase of cell maturation
- Phase of cell differentiation
4 of 25
Q.4 Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
5 of 25
Q.5 Exponential growth of the plants is express as W1 = W0 ert r represents
- ability of the plant to produce new cells
- efficiency index
- relative growth rate
- all of the above
6 of 25
Q.6 Opening of floral buds into flowers, is a type of:
- Autonomic movement of variation
- Autonomic movement of locomotion
- Autonomic movement of growth
- Paratonic movement of growth
7 of 25
Q.7 Which one is incorrect?
- Epiblast is presumptive ectoderm and mesoderm
- Hypoblast is presumptive endoderm
- Hypoblast is presumptive mesoderm
- Upper layer of cells in blastoderm is epiblast
8 of 25
Q.8 The stage of rapid cell division just after fertilization is
- Organogenesis
- Cleavage
- Gastrulation
- Growth
9 of 25
Q.9 Which one of the followings is a gaseous plant hormone?
- Ethylene
- Gibberellin
- IAA
- Abscisic acid
10 of 25
Q.10 To prevent over – ripening, bananas should be
- given a dip in ascorbic acid
- maintained at room temperature
- refrigerated
- stored at the top of refrigerator
11 of 25
Q.11 Growth in dorsiventral leaf is measured in terms of
- length of leaf
- increase in cell number
- surface area increase
- none of these
12 of 25
Q.12 Plants grow throughout their life due to
- presence of meristems
- presence of vascular cambium
- presence of xylem and phloem
- presence of tracheids
13 of 25
Q.13 Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
14 of 25
Q.14 The ability to regain or recover the lost or injured part of body is
- Aging
- Regeneration
- Abnormal development
- Primary inductio
15 of 25
Q.15 Which growth hormone accerlates the malting process in brewing industry?
- Auxins
- Gibberellins
- Ethylene
- Cytokinins
16 of 25
Q.16 Which plant growth regulator is the derivative of carotenoids?
- Auxin
- Gibberelic acid
- Cytokinin
- Abscisic acid
17 of 25
Q.17 Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
18 of 25
Q.18 Mobilisation of stored food in germinating seeds is triggered by
- auxins
- cytokinins
- gibberellins
- ethylene
19 of 25
Q.19 Cavity formed between somatic and splanchnic mesoderm is called
- Gastrocoele
- Blastocoele
- Coelom
- Neurocoele
20 of 25
Q.20 IAA is naturally occurring plant hormone called
- Gibberlin
- Auxin
- Cytokinin
- Absicic acid
21 of 25
Q.21 Auxin is synthesised from in apical meristem from amino acid
- Isoleucine
- Methionine
- Niacin
- Tryptophan
22 of 25
Q.22 Growth regulator which induces parthenocarpy
- IAA
- ABA
- Cytokinin
- Ethylene
23 of 25
Q.23 Formation of seedless fruit without act of fertilisation
- Parthenocarpy
- pseudocarpy
- Apomixis
- Parthenogenesis
24 of 25
Q.24 The major site for production of gibberellin is
- Embryos
- Roots
- Young leaves
- All of these
25 of 25
Q.25 Gibberellin is isolated from
- Brian et al
- Went
- Yabuta
- Kurosawa
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