plant growth and development Mock Test | NEET Botany Test Series Leave a Comment / Blog / By admin Plant Growth and Development - NEET BOTANY Best of luck! 1 / 40 Which of the following statements is incorrect regarding growth? Growth is an irreversible and permanent process Growth in length of the plant is measured by auxanometer Vacuolation of cell starts in maturation phase of growth Plasmatic modification in plant cells leads to differentiation 2 / 40 Which of the following plant hormones has following effects?(i) Xylem differentiation(ii) Root formation(iii) Prevent abscission of young plant parts.(iv) Act as a selective herbicide Gibberellic acid Auxin Ethylene ABA 3 / 40 Malting process in brewing industry is promoted by which PGR ? Ethylene Gibberellic acid Abscisic acid Cytokinin 4 / 40 Which of the following is/are example(s) of natural auxin ? IAA IBA NAA Both (1) and (2) 5 / 40 Most widely used PGR in agriculture is Gibberellic acid ABA Dormin Ethylene 6 / 40 With respect to seed dormancy ABA is the antagonistic to PGR Cytokinin Gibberellic acid Auxin Ethylene 7 / 40 The site of perception for photoperiodic response (light/dark) in plants is Shoot apex (apical meristem) Embryonic tissue Leaf Root 8 / 40 A synthetic product, N ^ 6 - furfurylamino purine, is a/an Auxin Gibberellin Cytokinin ABA 9 / 40 Which of the following characteristics are associated with auxin ? Root initiation Parthenocarpy Weedicide property All (1), (2) and (3) 10 / 40 Which of the following features is associated with the cells in meristematic phase or cell division phase? Dense protoplasm Very small size of nucleus Low rate of respiration Very large vacuole 11 / 40 The response of plants to changes in the relative lengths of day and night is called Vernalisation Phototropism Photoperiodism Thigmotropism 12 / 40 Cytokinin is related to all, except Delay in senescence Tissue culture Counteracting apical dominance Fruit ripening 13 / 40 By which action a seed coat can be softened o weakened ? Vernalisation Stratification Scarification Light exposure 14 / 40 Decapitation usually results in the growth of Lateral buds Apical buds Lateral as well as apical buds Shoot tips 15 / 40 Who performed the experiments using canary grass to demonstrate the curvature of tip? Darwin Went Skoog E. Kurosawa 16 / 40 Stimulus for vernalization is perceived by Mature stem apex Embryo of the seed Leaves Both (1) and (2) 17 / 40 Which of the following plant is not an example of long day plant? Wheat Radish Sugarbeet Tobacco 18 / 40 Cytokinin induced delay in senescence (aging) of leaves and other organs by controlling protein synthesis and mobilization of nutrients as resources is termed as Triple response Richmond Lang effect Respiratory climactic Epinasty 19 / 40 Precursor of auxin is Methionine Valine Tryptophan Glutamic acid 20 / 40 Which of the following characterstics is associated with the cells in elongation phase ? Increased vacuolation New cell wall meterial deposition Increase in cell size All (1), (2) & (3) 21 / 40 can cause seed dormancy ? ABA Stress hormone Both (1) and (2) Auxin 22 / 40 Ethylene is related to all, except Origin of root hairs Stem elongation in deep water rice plants Climacteric fruits Lateral shoot formation 23 / 40 Most widely used PGR in agriculturea. Is formed from methionineb. Can fit in both categories i.e. inhibitor and promoter of growthC. Promotes root growth and root hair formationd. Increasing male flowers in cucumber A and B are incorrect B and C are incorrect A and C are incorrect Only D is incorrect 24 / 40 In which of the following plants leaves of the juvenile phase are different in shape from those in mature phase ? Cotton, Buttercup Larkspur, Ranunculus Coriander, Cotton Buttercup and Ranunculus 25 / 40 Shelf life of cut shoot is increased by applying Auxin Ethylene ABA Zeatin 26 / 40 Choose odd one out with respect to vernalisation Prevents precocious reproductive development in plants Stimulus is perceived by shoot apices or dividing cells It is seen in many winter and biennial plants Anaerobic condition is essential for this process 27 / 40 Read the sentences carefully(A) Ethylene shows triple response(B) Abscisic acid promotes seed maturation and dormancy(C) Auxins show bolting(D) GA shows polar transportThe correct ones are A and B B and C C and D A and D 28 / 40 Find the incorrect statement with respect to auxins: Auxins are weak organic acids They have polar transport It is also involves in the metabolic activities in human being It wast the first phytohormone to be discovered 29 / 40 Measure of growth in an algal filament is Increase in diameter Increase in volume Increase in number of cell Increase in surface 30 / 40 What is not true for vivipary? Germination of seed while still attached to the parent plant Seed has zero dormancy period Seedling separates from mother plant due to increase in weight Lateral roots develop from radicle while attached to mother plant 31 / 40 Read the statement carefullyA. When the inhibition of seed germination is caused by external factors, it is called dormancyB. When seeds do not germinate due to intrinsic factor, it is called quiescenceC. Dormancy can be caused due to impermeable seed coatD. Presence of redumentary embryo also hinders seed germination Which of the above statements are incorrect? A and B A, B and C C and D Only A 32 / 40 Find the correct statement with respect to cytokinin Cytokinin was discovered from human urine Zeatin is the natural cytokinin It is mitotic poison Maximum concentration is found in senescent regions of plants 33 / 40 Which PGR is present in coconut milk and yeast extract DNA? C_{2}*H_{4} IBA Cytokinin NAA 34 / 40 Which of the following decreases sensitivity of roots to gravity? Auxin Ethylene ABA GA 35 / 40 Find the odd one out with respect to seed germination Gram Castor Onion Mustard 36 / 40 In which case auxin and cytokinins show antagonistic action ? Cell division Apical dominance Senescence Abscission 37 / 40 Which one is not a case of differentiation ? Secondary phloem Primary phloem Chlorenchyma Sclerenchyma 38 / 40 Both stem and petiole elongation in submerged and partially submerged aquatic plants are promoted by GA3 and cytokinin Ethylene Zeatin and GA3 Auxin and Zeatin 39 / 40 Find the incorrect match from the following Indole compound - IBA Carotenoid derivative - ABA Terpenes - Cytokinin Gibberella fujikuroi - Bakanae disease of rice 40 / 40 Read these statements carefullyA. Growth is associated with high degree of metabolic activitiesB. Growth rate is constant from the very beginning and progresses arithmatically throughout the life C. Stationary phase occurs due to shortage of space, food or accumulation of toxinsD. Water maintains turdigity of growing cells How many of the above statements is/are incorrect?How many of the above statement is/are incorrect? Only A Only B A and B C and D Your score isThe average score is 42% 0% Restart quiz