Read following statements and answer in suitable term given in option :-
(a) The promotion of flowering by a period of low temperature
(b) Hormonal substance migrates from leaves to shoot for inducing flowering
(c) The general metabolic activity of the embryo slow down or in inactive state
(d) Formation of separation layer between tissue

Read the following statements and find the suitable option :- (a) Generally petals are green, leaf like and protect the flower in the bud stage. (b) Generally sepals are brightly coloured to attract insects for pollination. (c) If stamens in a flower remain free (no cohesion) this is called polyandrous. (d) Each ovary bears one or more ovules attached to a flattened, cushion like placenta.

Read the following statements and find the suitable option a. Generally petals are green, leaf like and protect the flower in the bud stage b. Sepals are brightly coloured to attract insects for pollination c. If stamens in a flower remain free this is called polyandrous d. Each ovary bears one or more ovules attached to a flattened, cushion like placenta e. There may be a variation in the length of filaments of stamen with on flower, as in Salvinia and mustard.

Read the following statements and choose the correct ones. A. Light always inhibits seed germination. B. Optimum temperature for seed germination is 10-15degC. C. Photoperiodism and vernalisation both are main phenomenon involved in flowering. D. Vernalisation can shortens the period between germination and flowering.

Read the following statements and choose the correct ones-- (A) Diffusion is a slow process and is dependent on a living system. (B) Diffusion of substances with hydrophilic moiety is facilitated by membrane proteins. (C) Facilitated diffusion causes net transport of molecules from a low to a high concentration. (D) Saturations may be achieved in both facilitated diffusion as well as active transport .

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.