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Typical plant growth shows _________ curve.
General Science Biology Botany Class 11th NEET UG NEET UG Preparation
Q. 4 of Quiz-1441 (Que-ID : 3022)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Ans → (b)S-shaped
Explanation → Typical plant growth represents sigmoid curve
This question is taken from this post → Plant Growth and Development (Class-11th Biology) Revision Test | MCQs For NEET - attemp/practice
More MCQs in - Plant Growth and Development (Class-11th Biology) Revision Test | MCQs For NEET
Q. 1 of Quiz-1441 (Que-ID : 3019)
Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
Q. 2 of Quiz-1441 (Que-ID : 3020)
Intercalary meristems are of
- Permanent nature
- Temporary nature
- Some are permanent some temporary
- None of these
Q. 3 of Quiz-1441 (Que-ID : 3021)
Cells of fibers and tracheids elongate during
- Phase of cell division
- Phase of cell elongation
- Phase of cell maturation
- Phase of cell differentiation
Q. 4 of Quiz-1441 (Que-ID : 3022)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Q. 5 of Quiz-1441 (Que-ID : 3023)
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
Q. 6 of Quiz-1441 (Que-ID : 3024)
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
Q. 7 of Quiz-1441 (Que-ID : 3025)
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
Q. 8 of Quiz-1441 (Que-ID : 3026)
The stage of rapid cell division just after fertilization is
- Organogenesis
- Cleavage
- Gastrulation
- Growth
Q. 9 of Quiz-1441 (Que-ID : 3027)
Which one of the followings is a gaseous plant hormone?
- Ethylene
- Gibberellin
- IAA
- Abscisic acid
Q. 10 of Quiz-1441 (Que-ID : 3028)
To prevent over – ripening, bananas should be
- given a dip in ascorbic acid
- maintained at room temperature
- refrigerated
- stored at the top of refrigerator
Q. 11 of Quiz-1441 (Que-ID : 3029)
Growth in dorsiventral leaf is measured in terms of
- length of leaf
- increase in cell number
- surface area increase
- none of these
Q. 12 of Quiz-1441 (Que-ID : 3030)
Plants grow throughout their life due to
- presence of meristems
- presence of vascular cambium
- presence of xylem and phloem
- presence of tracheids
Q. 13 of Quiz-1441 (Que-ID : 3031)
Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
Q. 14 of Quiz-1441 (Que-ID : 3032)
The ability to regain or recover the lost or injured part of body is
- Aging
- Regeneration
- Abnormal development
- Primary inductio
Q. 15 of Quiz-1441 (Que-ID : 3033)
Which growth hormone accerlates the malting process in brewing industry?
- Auxins
- Gibberellins
- Ethylene
- Cytokinins
Q. 16 of Quiz-1441 (Que-ID : 3034)
Which plant growth regulator is the derivative of carotenoids?
- Auxin
- Gibberelic acid
- Cytokinin
- Abscisic acid
Q. 17 of Quiz-1441 (Que-ID : 3035)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Q. 18 of Quiz-1441 (Que-ID : 3036)
Mobilisation of stored food in germinating seeds is triggered by
- auxins
- cytokinins
- gibberellins
- ethylene
Q. 19 of Quiz-1441 (Que-ID : 3037)
Cavity formed between somatic and splanchnic mesoderm is called
- Gastrocoele
- Blastocoele
- Coelom
- Neurocoele
Q. 20 of Quiz-1441 (Que-ID : 3038)
IAA is naturally occurring plant hormone called
- Gibberlin
- Auxin
- Cytokinin
- Absicic acid
Q. 21 of Quiz-1441 (Que-ID : 3039)
Auxin is synthesised from in apical meristem from amino acid
- Isoleucine
- Methionine
- Niacin
- Tryptophan
Q. 22 of Quiz-1441 (Que-ID : 3040)
Growth regulator which induces parthenocarpy
- IAA
- ABA
- Cytokinin
- Ethylene
Q. 23 of Quiz-1441 (Que-ID : 3041)
Formation of seedless fruit without act of fertilisation
- Parthenocarpy
- pseudocarpy
- Apomixis
- Parthenogenesis
Q. 24 of Quiz-1441 (Que-ID : 3042)
The major site for production of gibberellin is
- Embryos
- Roots
- Young leaves
- All of these
More MCQs In - General Science Biology Botany Class 11th NEET UG NEET UG Preparation
Q. 11 of Quiz- (Que-ID : 3004)
Meiosis occurs for the human female in ______.
- Pancreas
- Liver
- Ovary
- Kidney
Q. 16 of Quiz- (Que-ID : 2909)
The third stage of parturition is called “after-birth”. In this stage
- excessive bleeding occurs
- fetus is bom and cervix and vagina contraction to normal condition happens
- fetus is bom and contraction of uterine wall prevents excessive bleeding
- placenta is expelled out
Q. 2 of Quiz- (Que-ID : 2995)
Cell plate grows from
- walls to the centre
- centre to the walls
- in patches
- simultaneously
Q. 7 of Quiz- (Que-ID : 3350)
The term “inbreeding depression” is related to
- increased fertility and productivity
- increased milk production
- reduced fertility & productivity
- reduced milk production
Q. 20 of Quiz- (Que-ID : 2688)
What is first name of heart sound
- Dubb
- Lubb
- Both a and b
- None of the above
Q. 20 of Quiz- (Que-ID : 3463)
Submerged hydrophytes have disseced leaves for
- Decreasing surface area
- Increasing surface area
- Reducing effect pf water currents
- Increasing number of stomata
Q. 9 of Quiz- (Que-ID : 2852)
Embryo sac is to ovule as _______ is to an anther.
- Stamen
- filament
- pollen grain
- androecium
Q. 10 of Quiz- (Que-ID : 2653)
What is the inspiratory reserve volume
- 2500-3000 ml
- 500 ml
- 1000-1100 ml
- None of the above
Q. 9 of Quiz- (Que-ID : 3227)
Thors and spines are
- homologous organs
- analogous organs
- thron is homologous while spine is analogous
- spine is homologous while is analogous
Q. 23 of Quiz- (Que-ID : 3091)
Structurally, chlorophyll a and b are different as
- Chl a has a methyl group and Chl b has an aldehyde group.
- Chl a has an aldehyde group and Chl b has a methyl group.
- Chl a has an ethyl group and Chl b has an aldehyde group
- Chl a has a carboxyl group and Chl b has an aldehyde group.
Q. 7 of Quiz- (Que-ID : 3175)
The vascular tissue of blood is made up of
- RBC
- plasma
- platelets
- all of the above
Q. 14 of Quiz- (Que-ID : 3532)
Bluebaby syndrome results from
- Excess of TDS
- Excess of DO
- Excess of chloride
- Methaemoglobin
Q. 3 of Quiz- (Que-ID : 2896)
Immediately after ovulation, the mammalian egg is covered by a membrane known as
- chorion
- zona pellucida
- corona radiata
- vitelline membrane.
Q. 22 of Quiz- (Que-ID : 2635)
Enamel is originated from which cell
- Amiloblast cell
- Odontioblast cell
- Chief cell
- Peptic cell
Q. 22 of Quiz- (Que-ID : 2840)
Strobilanthus kunthiana flowers once in
- 5 years
- 12 years
- 20 years
- 50 years
Q. 21 of Quiz- (Que-ID : 2839)
Clear cut vegetative, reproductive and senescent phases cannot be observed in
- annual plants
- perennial plants
- biennial plants
- ephemeral plants.
Q. 11 of Quiz- (Que-ID : 2624)
Absorption of water in large intestine is done by
- Chief cells
- Haustra cells
- Parietal cell
- Peptic cell
Q. 11 of Quiz- (Que-ID : 3404)
The role of DNA ligase in the construction of a recombinant DNA molecule is
- formation of phosphodiester bond between two DNA fragments
- formation of hydrogen bonds between sticky ends of DNA fragments
- ligation of all purine and pyrimidine bases
- none of the above
Q. 14 of Quiz- (Que-ID : 3232)
The coloured part of a Bougainuillea flower is the
- corolla
- calyx
- bracts
- androecium
Q. 6 of Quiz- (Que-ID : 1715)
Which of the following can be used for the biological control of musquitoes?
- Oil
- DDT
- Gamaxene
- Gambusia
Q. 8 of Quiz- (Que-ID : 2621)
Which enzyme converts polysaccharides into disaccharides
- Amylases
- Lipases
- Salivary amylase
- None of the above
Q. 14 of Quiz- (Que-ID : 2882)
In which of the following weeks of pregnancy CVS is done ?
- 12th – 14th week
- 8th – 10th week
- 5th – 7th week
- None of these
Q. 22 of Quiz- (Que-ID : 3115)
Biological nitrogen fixation was discovered by
- Gericke
- Nehar and Sakmann
- Liebig
- Winograndsky
Q. 9 of Quiz- (Que-ID : 3277)
Isogamous condition with non-flagellated gametes is found in
- Chlamydomonas
- Spirogyra
- Volvox
- Fucus
Q. 6 of Quiz- (Que-ID : 3199)
Fusifrom initial cells of cambium from
- vascular rays
- tracheary elements
- ray parenchyma
- phloem parenchyma
Q. 11 of Quiz- (Que-ID : 2779)
In angiosperm, characters of flowers are used in classification because
- Flowers are attractive
- Flowers are large
- Characters of flowers are conservative
- None of the above
Q. 2 of Quiz- (Que-ID : 3270)
Which of the followings plant material is an efficient water imbibant?
- Agar
- Cellulose
- Lignin
- Pectin
Q. 15 of Quiz- (Que-ID : 2733)
Whittakers definition of classification does not include
- Algae
- Protista
- Plantae
- mychota
Q. 24 of Quiz- (Que-ID : 3242)
Flowers in which only one set of essential organs is present are said to be
- Polygamous
- Bisexual
- Dioecious
- Unisexual
Q. 19 of Quiz- (Que-ID : 3037)
Cavity formed between somatic and splanchnic mesoderm is called
- Gastrocoele
- Blastocoele
- Coelom
- Neurocoele
Q. 2 of Quiz- (Que-ID : 3220)
Artabotrys is a hook climber in which the hooks are modified
- inflorescence axis
- petiole
- roots
- stipules
Q. 19 of Quiz- (Que-ID : 3362)
The term ‘apiculture’ refers to
- tissue culture
- pisciculture
- bee-keeping
- animal-keeping
Q. 6 of Quiz- (Que-ID : 2749)
Anabolic steroids are ___ versions of testosterone
- Effective
- Synthetic
- Natural
- Ineffective
Q. 25 of Quiz- (Que-ID : 2693)
What condition occurs when not enough oxygen reaches heart muscle
- High bp
- Low bp
- Angina
- Heart failure
Q. 11 of Quiz- (Que-ID : 3304)
Which one of the following scientist’s name is correctly matched with the theory put forth by him ?
- de Vries – Theory of natural selection
- Darwin – Theory of pangenesis
- Weismann – Theory of continuity of germplasm
- Pasteur – Theory of inheritance of acquired charcters
Q. 23 of Quiz- (Que-ID : 3516)
The worst dangerous threat to wild life is by
- Habitat destruction
- Hunting
- Overgrazing
- Exotic species
Q. 17 of Quiz- (Que-ID : 3385)
BOD is………..in polluted water and in potable water.
- more, less
- less, more
- less in both
- medium in both
Q. 5 of Quiz- (Que-ID : 3223)
Which one of the following plants dose not have root – pockets
- Pistia
- Lemna
- Ficus
- Eichhornia
Q. 22 of Quiz- (Que-ID : 2940)
Which three scientists independently rediscovered Mendel’s work ?
- Avery, McLeod, McCarty
- Sutton, Morgan and Bridges
- Bateson, Punnet and Bridges
- de Vries, Correns and Tschemark
Q. 17 of Quiz- (Que-ID : 3235)
The term phyllotaxy is used to describe the
- type of ovary in a plant
- mode of arrangement of leaves
- type of roots
- arrangement of sepals and petals
Q. 23 of Quiz- (Que-ID : 2916)
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called
- spermiogenesis
- spermatogenesis
- spermatocytogenesis
- spermiation
Q. 30 of Quiz- (Que-ID : 601)
What is the dominant chemical present in detergent powder ?
- Hydrochloric acid
- Sodium carbonate
- Calcium carbonate
- Sodium alkyl sulphate
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