Read the given statements to identify the phytohormone that performs these functions.
(i) Horizontal growth of seedlings, swelling of the axis and apical hook formation in dicot seedlings.
(ii) Promoting senescence and abscission of leaves and flowers.
(iii) Breaking seed and bud dormancy.
(iv) Initiating germination in peanut seeds.
(v) Sprouting of potato tubers.

Read the given statements and select the option that correctly identifies the incorrect ones. (i) Cytokinin is primarily concerned with cell division. (ii) C_(2)H_(4) breaks seed and bud dormancy (iii) ABA stimulates the opening of stomata. (iv) C_(2)H_(4) initiates germination in peanut seeds, sprouting of potato tubers. (v) ABA is synergistic to GA.

Read the given statements and select the option that correctly identifies the incorrect ones. (i) Cytokinin is primarily concerned with cell division. (ii) C_(2)H_(4) breaks seed and bud dormancy (iii) ABA stimulates the opening of stomata. (iv) C_(2)H_(4) initiates germination in peanut seeds, sprouting of potato tubers. (v) ABA is synergistic to GA.

Read the given statements and identify the plant hormones X,Y and Z. (i) Hormone Y induces flowering in mango and also promotes rapid internode/petiole elongation in deep water rice plants and hence helping leaves or upper part of shoot to remain above water. (ii) Hormone X promotes root growth and root hair formation. (iii) Hormone Z inhibits the seed germination, increases the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy.

Read the given statements and identify the plant hormones X,Y and Z. (i) Hormone Y induces flowering in mango and also promotes rapid internode/petiole elongation in deep water rice plants and hence helping leaves or upper part of shoot to remain above water. (ii) Hormone X promotes root growth and root hair formation. (iii) Hormone Z inhibits the seed germination, increases the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy.

Identify the correct statement/s of the following regarding the role of ethylene A) Promotes root growth and Root hair formation B) Initiates seed germination in peanut seeds C) To initiate flowering and for synchronising fruit set in pineapples D) Induces flowering in mango

Read the following statements carefully and select the appropriate option given below. (i) Bisexual animals that possess both male and female reproductive organs, are hermaphrodites. (ii) In seed plants, pollen grains are the carriers of male gametes and ovule have the egg. (iii) Events in sexual reproduction before the formation of zygote are called post-fertilisation events. (iv) Sexual reproduction involves the formation and fusion of gametes, (v) Animals are categorised into oviparous and viviparous based on whether the development of the zygote takes place outside the body of the female parent or inside.

Identify the wrong statement regarding the physiological effects of Auxin. (i) Auxin prevents abscission (ii) Auxin inhibits respiration (iii) Auxin promotes cell elongation (iv) Auxin breaks seed dormancy

Read the following statements carefully and select the appropriate option given below. (i) The distal end of the filament is attached to the thalamus or the petal of the flower. (ii) The pollen grains represent the male sporophyte. (iii) The microsporangia develop further and become embryo sac. (iv) In over 60 per cent of naked seeded plant, pollen grains are shed at this 2-celled stage. (v) As anthers mature and dehydrate the microspores, dissociate from each other and develop into pollen grains.