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Botany · PYQ NEET UG 2023
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Botany · PYQ NEET UG 2023
In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
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A typical angiosperm embryo sac at maturity is:
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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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When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:
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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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The site of perception of light in plants during photoperiodism is:
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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 :
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Which of the following combinations is required for chemiosmosis?
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Match List-I with List-II: List-I List-II A Cohesion I More attraction in liquid phase B Adhesion II Mutual attraction among water molecule C Surface tension III Water loss in liquid phase D Guttation IV Attraction towards polar surface Choose the correct answer from the options given below :
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Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:
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