Which tissue remains more active during autumn

a)
Vascular cambium

b)
Cork cambium

c)
Parenchyma

d)
Sclerenchyma

Correct answer is option 'B'. Can you explain this answer?

Question

Which tissue remains more active during autumna)Vascular cambiumb)Cork cambiumc)Parenchymad)SclerenchymaCorrect answer is option 'B'. Can you explain this answer?

Answer

The highest activity of cork cambium is in winter (Autumn) season. Ring of cork cambium remains living only for one year. Each year, a new cambium is formed below the previous cambium. This new cambium is derived from the secondary cortex or phelloderm.

Answer

In dicot stems, the cambium, which is present between primary xylem and primary phloem is called intrafascicular cambium. The cells of medullary rays near these intrafascicular cambium become meristematic and form interfascicular cambium. This leads to the formation of a continuous ring of cambium.

The cambial ring becomes active and starts cutting off new cells; both on the inner and the outer sides. The cells which are cut off towards the pith mature into secondary xylem. The cells which are cut off towards the periphery mature into secondary phloem. The cambium is usually more active on the inner side than on the outer side.

Various physiological and environmental factors control the activity of cambium. Climatic conditions are not uniform through the year; in temperate regions. Cambium is very active during the spring season, while it is less active during the winters. Hence, during spring; a large number of xylem elements are formed which have wider vessels. During winter, fewer xylem elements are formed which have narrow vessels. The wood formed during summer is called as spring wood or early wood, while the wood formed during winter is called as autumn wood or late wood.

Answer

In spite of any season vascular cambium produces xylem and pholem continuously and main thing to remember that it is a meristematic tissue.

Answer

Answer

Active Tissue during Autumn: Cork Cambium
The tissue that remains more active during autumn is the cork cambium. This is due to the specific functions and characteristics of the cork cambium during this season.

Key Points:
- Cork Cambium: Cork cambium, also known as phellogen, is a type of lateral meristem responsible for producing cork cells. These cork cells are deposited externally to protect the plant from various environmental stresses.
- Autumn Activity: During autumn, when temperatures drop and environmental conditions become harsher, the cork cambium becomes more active. It produces thicker layers of cork cells to provide additional insulation and protection to the plant.
- Protective Function: The increased activity of the cork cambium results in the formation of a thicker protective layer called bark. This bark helps prevent water loss, insulates the plant from temperature fluctuations, and protects it from pathogens and physical damage.
- Adaptation to Seasonal Changes: The enhanced activity of the cork cambium during autumn is an adaptation by plants to survive the upcoming winter months. By producing thicker cork layers, plants are better equipped to withstand the challenges posed by the changing environmental conditions.
- Long-Term Survival: The protective function of the cork cambium and the bark it produces during autumn contribute to the long-term survival of plants. These adaptations help plants endure the colder months and prepare them for the challenges of the upcoming winter season.
In conclusion, the cork cambium remains more active during autumn as it plays a crucial role in producing protective layers of bark to help plants survive the harsh environmental conditions of the season.

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