positively geotropic
apogeotropic
phototropic
chemotropic
B. apogeotropic
one
two
three
four
Coniferales
Gnetales
Cycadales
Both (a) and (b)
Cycas
Pinus
Both (a) and (b)
None of these
cambium
cliliated sperms
seeds
flowers
1-4 leaves
2-5 leaves
2-4 leaves
1-5 leaves
roots of Pinus
normal roots of Cycas
coralloid roots of Cycas
stems of Pinus
Pirtus
Selaginella
Cycas
Funaria
Circinate venation of foliage leaves
Presence of armed parenchyma
Presence of motile sperm
Absence of vessels in the xylem
scales
pistils
stamens
petals
water
wind
insects
animals
at the time of fertilization
before fertilization
after fertilization
before or after fertilization
Cycas species
Pinus species
Papaver species
None of these
Pinus
Cycas
Sequoia
Selaginella
4
3
2
0
Presence of ovuliferous scale
Embryo with two cotyledons
Resin canals in needles
Tracheids with bordered pits
Bryophyfces
Pteridophyfees
Gymnosperms
None of these
outer integument
endosperm
funiculus
nucellus
schizogenous
lysogenous
schizolysogenous
none of these
vessels only
tracheitis only
equal number of both
more of tracheids and less of vessels
Dryopteris
Cycas
Pinus
Both (b) and (c)
microsporophyll
microsporangium
megasporophyll
megasporangium
it is found only in China
it looks like a fern tree
it has ciliated sperms
it also occurs as a fossil
naked ovules
vessels
vascular tissue
none of these
Ginkgo biloba
Pinus gerardiane
Cycas revoluta
None of these
Pinus
Mango
Dalbergia
Ficus
Ephedra
Cycas
Pinus
Selaginella
isogamous
double
oogamous
siphonogamous
integument and nucellus
ovuliferous scale and integument
carpellary and ovuliferous scale
bract scale and integumnet
closed, conjoint parallel vascular bundles
open, conjoint parallel vascular bundles
open, separate parallel vascular bundles
open, conjoint collateral vascular bundles
Oscillatoria and Nostoc
Nostoc and Rivularia
Nostoc and A rmbaena
All of these