Which of the following is a living fossil ?
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Dwarf shoots of Pinus species have
Which algae are commonly found in coralloid roots of Cycas ?
The stem of Pinus plant has
Perisperm is remnants of
The ovuliferous scales of pine cone are comparable to
Coralloid roots are found in :
Each stamen in Cycas is a representation of
Sulphur shower is related to
Fertilization in gymnosperms is
The number of integuments of Pinus is
Algal zone is characteristic of
Which of the following statements is not true of Pinus ?
In Cycas, archegonium has following number of neck canal cells:
The wood of Cycas consists of
Monoxylic wood consists of
Cycas is said to be a living fossil because
Coralloid roots of Cycas are
Pittus is a gymnosperm as it has
Endosperm in gymnosperms is formed
Which of the following is not a characteristic feature of Cycas ?
The revoluta and circinalis are the species of
In Pinus, pollination takes place with the help of
Sago-grains are chiefly obtained from
Female cone is absent in
Non-porous wood occurs in
The wing on the seed of Pinus develops from
Neck canal cells are absent in
Cycas and Dryopteris resemble each other in the presence of
Dimorphic leaves are characteristic of
Largest antherozoids are found in
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