Sulphur shower is related to
Both (a) and (b)
None of these
Correct Answer :
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Female cone is absent in
The stem of Pinus plant has
Which of the following orders resembles much more to angiosperms ?
Non-porous wood occurs in
In Cycas, archegonium has following number of neck canal cells:
The wood of Cycas consists of
Neck canal cells are absent in
Fertilization in gymnosperms is
phloem of gymnosperms is devoid of
In Pinus, pollination takes place with the help of
Monoxylic wood consists of
Dwarf shoots of Pinus species have
The wing on the seed of Pinus develops from
Largest antherozoids are found in
Coralloid roots of Cycas are
Pittus is a gymnosperm as it has
Which algae are commonly found in coralloid roots of Cycas ?
Transfusion tissue is seen in leaves of
Perisperm is remnants of
The number of integuments of Pinus is
The ovuliferous scales of pine cone are comparable to
Which of the following statements is not true of Pinus ?
Sago-grains are chiefly obtained from
Which of the following plants bears seeds but not fruits ?
Dimorphic leaves are characteristic of
Algal zone is characteristic of
Cycas and Dryopteris resemble each other in the presence of
Which of the following is not a characteristic feature of Cycas ?
The revoluta and circinalis are the species of
Each stamen in Cycas is a representation of
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