Question:

Functions of plant growth promoters and plant growth inhibitors are given here in a jumbled up manner. Select the option that correctly segregates these functions. (i) Cell division (ii) Cell enlargement (iii) Pattern formation (iv) Tropic.growth (v) Flowering (vi) Fruiting (vii) Seed germination (viii) Response to wounding (ix) Response to stresses of biotic and abiotic origin (x) Dormancy

Updated On: Jul 6, 2022
  • a
  • b
  • c
  • d
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The Correct Option is C

Solution and Explanation

Plant Growth Hormones $(PGRs)$ or phytohormones are the organic substances which are synthesised in minute quantities in one part of the plant body and transported to another part where they influence specific physiological processes (Went and Thimann, $1937$). $PGRs$ are broadly divided into two groups?
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Notes on plant growth and development

Concepts Used:

Plant Growth and Development

Growth in Plants:

Plants have the distinctive ability to grow throughout their life. The meristem cells present there in the roots and shoot apical lead to the primary growth of the plant. The primary growth which happens or takes place at the tips of the stem and roots of the plant contributes to the elongation of the plant along its axis.

In the later stages of growth in plants, the growth in dicotyledonous, vascular cambium, gymnosperms, and cork-cambium are also caused by the existence of meristems in them. These intercalary meristems are put up to increase the girth of the organs of the plant in which they are active. Such type of growth is commonly known as secondary growth.

Many parameters such as area, volume, fresh weight, cell number, dry weight, length, etc are utilized to measure the growth in plants as increase in the amount of protoplasm is responsible for the growth in plants.

Read More: Plant Growth and Development