Advantages of cross-pollination over self-pollination.
(1) It always results in much healthier offspring which are better adapted to changed environment.
(2) Promotes genetic diversity in plants.
(3) Production of hybrid instead of pure lines.
(4) Helps to eliminate the undesirable characters.
Give one difference between:
(i) Intraspecific struggle and Interspecific struggle.
(ii) Somatogenic variation and Blastogenic variation.
(a) Give the anatomical differences between a dicot leaf and a monocot leaf.
(b) Enlist the functions of mineral elements in the life of a plant. What do you mean by essentiality of an element ?
(c) Write the differences between nastic and tropic responses.
Differentiate between :
(i) Reparative and Restorative regeneration.
(ii) Capacitation and fertilization.
