Dwarf shoots of Pinus species have
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Transfusion tissue is seen in leaves of
Neck canal cells are absent in
Winged seeds are found in
Female cone is absent in
Coralloid roots of Cycas are
The revoluta and circinalis are the species of
Coralloid roots are found in :
Which of the following statements is not true of Pinus ?
Each stamen in Cycas is a representation of
Sulphur shower is related to
Pittus is a gymnosperm as it has
Perisperm is remnants of
Non-porous wood occurs in
The wing on the seed of Pinus develops from
Cycas and Dryopteris resemble each other in the presence of
Monoxylic wood consists of
Algal zone is characteristic of
Which of the following is not a characteristic feature of Cycas ?
Mucilage canals of Cycas stem are
Fertilization in gymnosperms is
Which of the following is a living fossil ?
phloem of gymnosperms is devoid of
Dimorphic leaves are characteristic of
The wood of Cycas consists of
Which of the following orders resembles much more to angiosperms ?
In Pinus, pollination takes place with the help of
The ovuliferous scales of pine cone are comparable to
Largest antherozoids are found in
Sago-grains are chiefly obtained from
Which of the following plants bears seeds but not fruits ?
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