PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Secondary growth
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Primary growth
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Photosynthesis
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Xylem transport
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Detailed explanation-1: -For example, palm trees increase their trunk diameter due to division and enlargement of parenchyma cells, which is termed as ‘diffuse secondary growth’.
Detailed explanation-2: -secondary growth, allocation of photosynthate, shoot growth patterns and crown shape. Tree growth occurs in two ways. Growth from the root and shoot tips resulting in increases in height and length is called primary growth. Growth that increases the thickness of stems and branches is called secondary growth.
Detailed explanation-3: -Two secondary meristems (lateral meristems) are responsible for secondary growth: the vascular cambium and cork cambium (Figure 11.3. 1).
Detailed explanation-4: -Secondary growth also occurs in many nonwoody plants, e.g. tomato, potato tuber, carrot taproot and sweet potato tuberous root. A few long-lived leaves also have secondary growth.
Detailed explanation-5: -So, the correct answer is ‘vascular cambium’