Female cone is absent in
Cycas
Pinus
Taxus
None of these
Correct Answer :
A. Cycas
Related Questions
The wood of Cycas consists of
vessels only
tracheitis only
equal number of both
more of tracheids and less of vessels
Sulphur shower is related to
Cycas
Pinus
Both (a) and (b)
None of these
Largest antherozoids are found in
Selaginella
Pinus
Cycas
Funaria
Neck canal cells are absent in
Bryophyfces
Pteridophyfees
Gymnosperms
None of these
Perisperm is remnants of
outer integument
endosperm
funiculus
nucellus
Which of the following statements is not true of Pinus ?
Presence of ovuliferous scale
Embryo with two cotyledons
Resin canals in needles
Tracheids with bordered pits
The ovuliferous scales of pine cone are comparable to
scales
pistils
stamens
petals
Coralloid roots are found in :
Dryopteris
Grtetum
Pinus
Cycas
In Pinus, pollination takes place with the help of
water
wind
insects
animals
phloem of gymnosperms is devoid of
sieve tubes
companion cells
pohloem parenchyma
none of these
Monoxylic wood consists of
compact wood
soft-loose wood
compact wood with abundant parenchyma
soft-loose wood with abundant parenchyma
Sago-grains are chiefly obtained from
Ginkgo biloba
Pinus gerardiane
Cycas revoluta
None of these
Cycas is said to be a living fossil because
it is found only in China
it looks like a fern tree
it has ciliated sperms
it also occurs as a fossil
Which of the following is a living fossil ?
Pinus
Cycas
Sequoia
Selaginella
Which of the following is not a characteristic feature of Cycas ?
Circinate venation of foliage leaves
Presence of armed parenchyma
Presence of motile sperm
Absence of vessels in the xylem
Transfusion tissue is seen in leaves of
Dryopteris
Cycas
Pinus
Both (b) and (c)
Which algae are commonly found in coralloid roots of Cycas ?
Oscillatoria and Nostoc
Nostoc and Rivularia
Nostoc and A rmbaena
All of these
Mucilage canals of Cycas stem are
schizogenous
lysogenous
schizolysogenous
none of these
The revoluta and circinalis are the species of
Pirtus
Selaginella
Cycas
Funaria
Dimorphic leaves are characteristic of
Ephedra
Cycas
Pinus
Selaginella
Which of the following orders resembles much more to angiosperms ?
Coniferales
Gnetales
Cycadales
Both (a) and (b)
Which of the following plants bears seeds but not fruits ?
Funaria
Mango
Pinus
Wheat
Fertilization in gymnosperms is
isogamous
double
oogamous
siphonogamous
Non-porous wood occurs in
Pinus
Mango
Dalbergia
Ficus
Pittus is a gymnosperm as it has
naked ovules
vessels
vascular tissue
none of these
Algal zone is characteristic of
roots of Pinus
normal roots of Cycas
coralloid roots of Cycas
stems of Pinus
The number of integuments of Pinus is
one
two
three
four
Cycas and Dryopteris resemble each other in the presence of
cambium
cliliated sperms
seeds
flowers
Coralloid roots of Cycas are
positively geotropic
apogeotropic
phototropic
chemotropic
The stem of Pinus plant has
closed, conjoint parallel vascular bundles
open, conjoint parallel vascular bundles
open, separate parallel vascular bundles
open, conjoint collateral vascular bundles