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Botany · PYQ NEET UG 2023
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Botany · PYQ NEET UG 2023
Axile placentation is observed in
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Movement and accumulation of ions across a membrane against their concentration gradient can be explained by
Read answer →Botany · PYQ NEET UG 2023
The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?
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Given below are two statements : Statement I : Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body. Statement II : Exarch condition is the most common feature of the root system. In the light of the above statements, choose the correct answer from the options given below :
Read answer →Botany · PYQ NEET UG 2023
Unequivocal proof that DNA is the genetic material was first proposed by
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Among 'The Evil Quartet', which one is considered the most important cause driving extinction of species?
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Which hormone promotes internode/petiole elongation in deep water rice?
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Which micronutrient is required for splitting of water molecule during photosynthesis?
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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : \n Assertion A : The first stage of gametophyte in the life cycle of moss is protonema stage.\n Reason R : Protonema develops directly from spores produced in capsule.\nIn the light of the above statements, choose the most appropriate answer from the options given below :
Read answer →Botany · PYQ NEET UG 2023
Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of
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The phenomenon of pleiotropism refers to
Read answer →Botany · PYQ NEET UG 2023
Upon exposure to UV radiation, DNA stained with ethidium bromide will show
Read answer →Botany · PYQ NEET UG 2023
The reaction centre in PS II has an absorption maxima at
Read answer →Botany · PYQ NEET UG 2023
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents. Reason R : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. In the light of the above statements, choose the correct answer from the options given below :
Read answer →Botany · PYQ NEET UG 2023
How many different proteins does the ribosome consist of?
Read answer →Botany · PYQ NEET UG 2023
In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
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Frequency of recombination between gene pairs on same chromosome as a measure of the distance between genes to map their position on chromosome, was used for the first time by
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Identify the correct statements : A. Lenticels are the lens-shaped openings permitting the exchange of gases. B. Bark formed early in the season is called hard bark. C. Bark is a technical term that refers to all tissues exterior to vascular cambium. D. Bark refers to periderm and secondary phloem. E. Phellogen is single-layered in thickness. Choose the correct answer from the options given below :
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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem. Reason R : Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves. In the light of the above statements, choose the correct answer from the options given below :
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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : ATP is used at two steps in glycolysis. Reason R : First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1-6-diphosphate. In the light of the above statements, choose the correct answer from the options given below
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Large, colourful, fragrant flowers with nectar are seen in :
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Match List-I with List-II: List-I List-II A Oxidative decarboxylation I Citrate synthase B Glycolysi II Pyruvate dehydrogenase C Oxidative phosphorylation III Electron transport system D Tricarboxylic acid cycle IV EMP pathway Choose the correct answer from the options given below :
Read answer →Botany · PYQ NEET UG 2023
