Q.
Secondary growth -
(a) Helps in increase in girth or diameter of plant organs.
(b) Occurs due to the activity of procambium.
Select the correct option.
Solution:
Primary growth produces growth in length and development of lateral appendages. Secondary growth is the formation of secondary tissues from lateral meristems. It increases the diameter of the stem. In woody plants, secondary tissues constitute the bulk of the plant. They take part in providing protection, support and conduction of water and nutrients.
Secondary growth occurs due to activity of secondary meristem (vascular cambium and cork cambium). Vascular cambium includes intra fascicular cambium (primary lateral meristem) and inter fascicular cambium (secondary lateral meristem). In secondary growth, girth or diameter of plant organ increases. However, Procambium concern with primary growth of plant.
Secondary growth occurs due to activity of secondary meristem (vascular cambium and cork cambium). Vascular cambium includes intra fascicular cambium (primary lateral meristem) and inter fascicular cambium (secondary lateral meristem). In secondary growth, girth or diameter of plant organ increases. However, Procambium concern with primary growth of plant.