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Botany · PYQ NEET UG 2023
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39 questions
Botany · PYQ NEET UG 2023
Axile placentation is observed in
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Match List-I with List-II\nList-I
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Which of the following plants is monoecious?
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The production of gametes by the parents, formation of zygotes, the \( F_1 \) and \( F_2 \) plants, can be understood from a diagram called:
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Movement and accumulation of ions across a membrane against their concentration gradient can be explained by
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The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?
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Gemmae are present in
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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 :
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The plant hormone used to destroy weeds in a field is:
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Unequivocal proof that DNA is the genetic material was first proposed by
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Diadelphous stamens are found in
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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 :
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The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is:
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Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of
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The phenomenon of pleiotropism refers to
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Upon exposure to UV radiation, DNA stained with ethidium bromide will show
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The first stable product of \( \text{CO}_2 \) fixation in sorghum is:
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Which of the following algae contains mannitol as reserve food material?
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The reaction centre in PS II has an absorption maxima at
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