The pyrenoids are made up of
Proteinaceous centre and starchy sheath
Core of nucleic acid surrounded by protein sheath
Core of protein surrounded by fatty sheath
Core of starch surrounded by sheath of protein.
The sexual reproduction is absent in
Spirogyra
Nostoc
Ulothrix
Volvox.
Pinus/cycas/gymnosperms, the endosperm is
triploid
haploid
diploid
tetraploid.
Heterospory and seed habit are often exhibited by a plant possessing
Petiole
ligule
bract
spathe
The smallest plant family ‘Gymnosperm’ has how many species?
640
1000
300
900
In Pinus, the wings of the seed develops from
ovuliferous scale
integument
nucellus
bract.
Pyrenoids are the centres for formation of
Porphyra
Enzymes
fat
starch
Pinus differs from mango in having
tree habit
green leaves
ovules not enclosed in ovary
wood.
Which of the following plants produces seeds but not flowers?
maize
mint
peepal
Pinus
Protonema occurs in the life cycle of
Riccia
Funaria
Anthoceros
Spirogyra.