Q. No.In onion and garlic, the leaves are
(1)cylindrical
(2)bifacial
(3) unifacial
(4) Both A and C
Difficulty Level:
Dicot leaves are ____________and monocot leaves are _______________.
(1) hypostomatic and amphistomatic
(2) amphistomatic and hypostomatic
(3) Astomatic and amphistomatic
(4) epistomatic and hypostomatic
Difficulty Level:
Secondary growth is because of
(1)vascular cambium
(2)cork cambium
(3)lateral meristem
(4)All of the above
Difficulty Level:
Interfascicular cambium is formed from
(1)medullary rays
(2)intrafascicular cambium
(3)cork cambium
(4)pericycle
Difficulty Level:
Vascular cambium includes
(1)only intrafascicular cambium
(2)only interfascicular cambium
(3)Both intrafascicular and interfascicular cambium
(4)cork cambium
Difficulty Level:
The cells which are formed from vascular cambium towards the centre are____________and towards the periphery are _________________
(1)secondary xylem, secondary phloem
(2)bast, wood
(3)wood, bast
(4)Both A and C
Difficulty Level:
The secondary xylem is produced more because
(1)cambium is more active towards the inner side
(2)cambium is more active towards the outer side
(3)xylem is more important than phloem
(4)All of the above
Difficulty Level:
The primary and secondary phloems get gradually crushed because of
(1) continuous formation and accumulation of secondary xylem
(2)discontinuous formation and accumulation of secondary xylem
(3)by pressure of secondary xylem as they are continuously formed
(4)Both A and C
Difficulty Level:
Primary xylem remains less or more intact towards the __________
(1) around the centre
(2) around the periphery
(3)outer to the pith
(4)Both A and C
Difficulty Level:
Which one is correct for spring wood
(1)It is formed due more activity of cambium
(2)It produces more xylary elements having vessels with wider cavities
(3)It is also called as early wood
(4)All of the above
Difficulty Level:
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