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Successive ring of vascular cambium is found in :-
(a) Cycas stem
(b) Gnetum ula stem
(c) Pinus stem
(d) Sunflower stem
  • a)
    a, b and c are correct
  • b)
    a and b are correct
  • c)
    b and d are correct
  • d)
    a and c are correct
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Successive ring of vascular cambium is found in :-(a) Cycas stem(b) Gn...
Pinus is uniformly covered with ice throughout the year and sunflower don't show distinct difference between late wood and early wood therefore this both don't show vascular cambium rings....so correct ans is opt b
Community Answer
Successive ring of vascular cambium is found in :-(a) Cycas stem(b) Gn...
Cycas and Gnetum are gymnosperms and show wide range of distribution from tropical rain forest to temperate and desert i.e. they are found in the places showing clear transition of season from winter-autumn-summer-spring.Temperate plants exhibit cambial activity in spring and autumn seasons i.e. twice a year. Cambium is more active in spring and forms more number of vessels with wider cavities. The increased number of leaves during spring puts a demand for additional vessels to supply sap to new leaves. Autumn season is marked by lesser number of leaves and hence, decreased sap transport which makes cambium less active. It produces narrow pitted vessels and tracheids. Thus, spring and autumn woods form distinct concentric rings in temperate regions. Due to absence of visible difference between early and late wood of tropical angiosperms (sunflower), caused by more or less uniform climate, pores are uniformly distributed throughout the ring Alpine and cold winter regions are covered with ice throughout the year and thus no differential activity of cambium which is prerequisite for annual growth ring formation. Pinus is present in alpine, snow covered regions where winters last for months in a year and there is no clear demarcation of different seasons.
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Successive ring of vascular cambium is found in :-(a) Cycas stem(b) Gnetum ula stem(c) Pinus stem(d) Sunflower stema)a, b and c are correctb)a and b are correctc)b and d are correctd)a and c are correctCorrect answer is option 'B'. Can you explain this answer?
Question Description
Successive ring of vascular cambium is found in :-(a) Cycas stem(b) Gnetum ula stem(c) Pinus stem(d) Sunflower stema)a, b and c are correctb)a and b are correctc)b and d are correctd)a and c are correctCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Successive ring of vascular cambium is found in :-(a) Cycas stem(b) Gnetum ula stem(c) Pinus stem(d) Sunflower stema)a, b and c are correctb)a and b are correctc)b and d are correctd)a and c are correctCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Successive ring of vascular cambium is found in :-(a) Cycas stem(b) Gnetum ula stem(c) Pinus stem(d) Sunflower stema)a, b and c are correctb)a and b are correctc)b and d are correctd)a and c are correctCorrect answer is option 'B'. Can you explain this answer?.
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