The number of integuments of Pinus is
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The wing on the seed of Pinus develops from
Endosperm in gymnosperms is formed
Which of the following is not a characteristic feature of Cycas ?
The ovuliferous scales of pine cone are comparable to
Largest antherozoids are found in
In Cycas, archegonium has following number of neck canal cells:
Monoxylic wood consists of
Sago-grains are chiefly obtained from
Sulphur shower is related to
Which of the following is a living fossil ?
Which of the following orders resembles much more to angiosperms ?
Perisperm is remnants of
Transfusion tissue is seen in leaves of
Algal zone is characteristic of
Cycas is said to be a living fossil because
Dimorphic leaves are characteristic of
Which of the following statements is not true of Pinus ?
Dwarf shoots of Pinus species have
Coralloid roots of Cycas are
Which of the following plants bears seeds but not fruits ?
Female cone is absent in
Pittus is a gymnosperm as it has
The wood of Cycas consists of
The revoluta and circinalis are the species of
phloem of gymnosperms is devoid of
Each stamen in Cycas is a representation of
Coralloid roots are found in :
Non-porous wood occurs in
Which algae are commonly found in coralloid roots of Cycas ?
Fertilization in gymnosperms is
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