Description : Which of the following movement is not related to auxin level? (a) Bending of shoot towards light (b) Movement of root towards soil (c) Nyctinastic leaf movements (d) Movement of sunflower head tracking the sun
Last Answer : (c) Nyctinastic leaf movements
Description : In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues? (a) All parts (b) Stem and root (c) Flowers, fruits and leaves (d) Shoot tips and root tips
Last Answer : (d) Shoot tips and root tips
Description : Apical dominance is caused by (a) abscisic acid in lateral bud (b) cytokinin in leaf tip (c) gibberellin in lateral buds (d) auxin in shoot tip.
Last Answer : (d) auxin in shoot tip.
Description : The major auxin produced in plants is: a. Indole-3-butyric acid (IBA) b. Naphthalene acetic acid (NAA) c. Indole-3-acetic acid (IAA) d. Ethylene
Last Answer : Indole-3-acetic acid (IAA)
Description : In green plants light favour the formation of a. Auxin b. GA c. ABA d. IBA
Last Answer : Auxin
Description : A thread-like stem or leaf which clings to any support, is known as a. Climber b. Tendril c. Sucker d. Creeper
Last Answer : Tendril
Description : Annual bearing apples differentiate much greater proportion of their flowers on _______: a. Spurs b. Shoots c. Leaf axils d. Main stem
Last Answer : Shoots
Description : The parts of stem from which a leaf arises is called a. Node b. Internodes c. Apex d. Bud
Last Answer : Node
Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients
Last Answer : Ans. ((a))
Description : The first ever auxin discovered was: a. IBA b. IPA c. IAA d. None of above
Last Answer : IAA
Description : Auxin destruction activity is inhibited by : a. Blue light b. Red light c. Green light d. None of the above
Last Answer : Red light
Description : The compounds which inhibit the activity of auxins are known as: a. Auxin antagonists b. Antiauxins c. Epinostic agent d. All of above
Last Answer : Antiauxins
Description : Auxin antagonists compounds interact with auxins as: a. Counteract b. Increase c. Decrease d. None of the above
Last Answer : Counteract
Description : Upper leaves will show chlorosis on midrib, veins green and dead spots occur in all parts of leaf (veins, tips and margins) show
Last Answer : Ans. Zn deficiency
Description : Organisation of stem apex into corpus and tunica is determined mainly by (a) planes of cell division (b) regions of meristematic activity (c) rate of cell growth (d) rate of shoot tip growth.
Last Answer : (a) planes of cell division
Description : Banana plants are infected with: a. Banana bunchy top b. Anthracnose of stem c. Rhizome wilt d. None
Last Answer : Banana bunchy top
Description : Vine mean climbing/trailing plants with a. Herbaceous stem b. Woody stem c. Both of these d. None of these
Last Answer : Herbaceous stem
Description : In some plants the buds contain both leaves and flowers and known as a. Leaf buds b. Flower buds c. Scaly buds d. Mixed buds
Last Answer : Mixed buds
Description : Differentiation of shoot is controlled by (a) high auxin : cytokinin ratio (b) high cytokinin : auxin ratio (c) high gibberellin : auxin ration (d) high gibberellin : cytokinin ratio.
Last Answer : (b) high cytokinin : auxin ratio
Description : A plant that dies to the ground at the end of each growing season but comes back from the same root stubs year after year is most accurately described as: a. Perennial b. Annual c. Biennial d. Herbaceous perennial
Last Answer : Herbaceous perennial
Description : Two basic types of pruning are heading-back and thinning-out. Which of the following is true about these pruning methods? a. Thinning cuts leave behind a good portion of the stem and many axillary buds. ... leave no buds. d. Heading cuts remove a portion of the stem and only terminal buds are lef
Last Answer : Thinning cuts are made close to a main branch or ground and few axillary buds are left
Description : Pansy is very popular annual due to its: a. Stem and foliage beauty b. Hardiness toward ground cover c. Planting under shad. d. Mix colour flowers bedding plant.
Last Answer : Mix colour flowers bedding plant.
Description : A climbing plant with woody stem is called a. Vine b. Liana c. Hedge d. All of the above
Last Answer : Vine
Description : Which of following trees has stem beauty? a. Eucalyptus b. Sterculia c. Royal palm d. All of above
Last Answer : All of above
Description : A slender trailing stem taking roots at the node is a. Runner b. Rhizome c. Tuber d. Bulbs
Last Answer : Runner
Description : The example of above ground modified stem is a. stolons b. Corms c. Tuber d. Rhizome
Last Answer : stolons
Description : Bananas main portion which remains above the ground is called as: a. Stem b. Rhizome c. Pseudostem d. Crown
Last Answer : Pseudostem
Description : Canary date differs from cultivated date in a. Length of fronds b. Arrangement of pinnus c. Thickness of stem d. Area of origin
Last Answer : Thickness of stem
Description : A self supporting vine type stem is called. a. Vine b. Shrub c. Herb d. Liana
Last Answer : Liana
Description : Sweet potato is propagated by: a. Stem cuttings b. Tubers c. Roots d. a & b
Last Answer : a & b
Description : An example of an organic material is __________. a. Pea gravel b. Perlite c. Leaf mold d. Vermiculite
Last Answer : Leaf mold
Description : The main commercial method for propagating African violets is by: a. Seeds b. Crowns c. Tubers d. Leaf petioles
Last Answer : Leaf petioles
Description : A leaf with parallel venation: a. Has leaflets b. Is a monocot c. Has crossing veins d. Is a compound leaf
Last Answer : Is a monocot
Description : Small, hair like outgrowth at the base of leaf stalk is termed as: a. Bud b. Bract c. Stipule d. Ligule
Last Answer : Stipule
Description : Peduncle is a main axis of the a. leaf b. Flower c. Inflorescence d. Bud
Last Answer : Inflorescence
Description : Special leaf which bears a flower or cluster of flowers in its axils is called a. Bracts b. Compound leaf c. Simple leaf d. Non of these
Last Answer : Bracts
Description : The bud which develop into the axils of a leaf is a. Axillary buds b. Terminal buds c. Adventitious buds d. Naked buds
Last Answer : Axillary buds
Description : Antagonistic effect of Fe on Zn availability in sweet orange causes: a. Leaf drop b. Fruit drop c. Reduce fruit weigh d. Zn deficiency
Last Answer : Zn deficiency
Description : Edges of the leaf are called a. Margin b. Midrib c. Veins d. Petiole
Last Answer : Margin
Description : The variety originated from a cross of King X Willow leaf is: a. Clementine b. Fair child c. Feutrell’s early d. Kinnow
Last Answer : Kinnow
Description : Different mango varieties can be distinguished on the basis of: a. New leaf colour b. Panicle length c. Number of male flowers d. All of above
Last Answer : New leaf colour
Description : Petiole is a main part of a. Flower b. Leaf c. Inflorescence d. Twig
Last Answer : Leaf
Description : Excess of N in citrus plant may cause a. Leaf drop b. Lodging c. Flower drop d. Fruit drop
Last Answer : Flower drop
Description : Date palm leaf is called: a. Simple leaf b. Long leaf c. Frond d. Pinna
Last Answer : Frond
Description : Leaf senescence can be retarded by the application of : a. Auxins b. Gibberellins c. Kinins d. Abscicic acid
Last Answer : Kinins
Description : Dicots could be identified on the basis of: a. Reticulate leaf venations b. Parallel venations c. No leaf venations d. None of these
Last Answer : Reticulate leaf venations
Description : In temperate climates, pruning should not be done near the end of the summer because: a. New growth will not harden before winter b. It may increase foliage disease c. Plants will not recover in time to produce new growth before winter d. Sever “bleeding” from the cuts will kill the plant
Last Answer : New growth will not harden before winter
Description : Fruit splitting in pomegranate and litchi is due mainly to: a. Water pressure b. Dry ness of air c. Nutritional defects d. All of above
Description : Dormancy in plant and seed is mainly due to a. Environmental factor b. Physiological factor c. a & b d. None