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