Recent questions tagged botany

Which of the following options gives the correct sequences of events during mitosis ?

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DNA fragments are

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The association of histone H1 with a nucleosome indicates :

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With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct ?

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The final proof for DNA as the genetic material came from the experiments of

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Fruit and leaf drop at early stages can be prevented by the application of

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The vascular cambium normally gives rise to :

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Asymptote in a logistic growth curve is obtained when :

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A complex of ribosomes attached to a single strand of RNA is known as :

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One of the major components of cell wall of most fungi is :

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Joint Forest Management Concept was introduced in India during :

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Which of the following is not required for any of the techniques of DNA fingerprinting available at present?

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Proximal end of the filament of stamen is attached to the :

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Which one of the following cell organelles is enclosed by a single membrane?

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Which of the following is not a stem modification?

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In bryophytes and pteridophytes, transport of male gametes requires :

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Which one of the following statements is not true?

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When does the growth rate of a population following the logistic model equal zero? The logistic model is given as $dN/dt = rN(1-N/K)$ :

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Which of the following is required as inducer(s) for the expression of Lac operon?

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The term ecosystem was coined by :

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Cotyledon of maize grain is called :

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Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options :

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Which of the following would appear as the pioneer organisms on bare rocks?

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Which of the following is a restriction endonuclease ?

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Which one of the following statements is wrong ?

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In which of the following, all three are macronutrients ?

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Tricarpellary, syncarpous gynoecium is found in flowers of

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Which one of the following is a characteristic feature of cropland ecosystem ?

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Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers

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A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the $F_1$ plants were selfed the resulting genotypes were in the ratio of -

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The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include the -

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Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom

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Mitochondria and chloroplast are- <br> (a) semi-autonomous organelles <br> (b) formed by division of pre existing organelles and they contain DNA but lack protein synthesising machinery <br> Which one of the following options is correct?

asked Aug 21, 2018 by pady_1

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Microtubules are the constituents of -

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Gause's principle of competitive exclusion states that

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A river with an inflow of domestic sewage rich in organic waste may result in -

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Which one of the following is the starter codon ?

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Specialised epidermal cells surrounding the guard cells are called -

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Which of the following statements is wrong for viroids ?

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The standard petal of a papilionaceous corolla is also called -

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Which of the following most appropriately describes haemophilia ?

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The taq polymerase enzyme is obtained from

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In meiosis crossing over is initiated at :

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Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature ?

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In a chloroplast the highest number of protons are found in

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Stems modified into flat green organs performing the functions of leaves are known as

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In context of Amniocentesis, which of the following statement is incorrect ?

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Spindle fibres attach on to

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Seed formation without fertilization in following plants involves the process of

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Which of the following is not a characteristic feature during mitosis in somatic cells ?

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