The thalloid body of a slime mould (Myxomycetes) is known as
Autosomal
Cytoplasmic
Y-linked
Y-linked
B.
Cytoplasmic
The members of Myxomycetes are called slime molds because they contain and secrete slime. They are included in lower fungi. Their somatic phase is a multinucleate, diploid holocarpic Plasmodium (a product of syngamy).
In Plasmodium, propagation occurs through fission or thick walled cysts or sclerotium-like structures. Reproduction takes place by the formation of uninucleate, thick-walled resting spores which are produced within minute fruiting bodies like structures i.e., the sporangia, however, the true fruiting bodies are absent in slime molds.
Fruiting bodies and mycelium are absent in lower fungi Protonoma is not formed in fungi.
Flagellated male gametes are present in all the three of which one of the following sets?
Anthoceros, Funaria and Spirogyra
Zygnema, Saprolegnia and Hydrilla
Fucus, Marsilea and Calotropis
Fucus, Marsilea and Calotropis
In which of the following forms is iron absorbed by plants?
Ferric
Ferrous
Both ferric and ferrous
Free element
In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result
there is no change in success rate of fertilization
there is high degree of sterility
one can conclude that the plant is apomictic
one can conclude that the plant is apomictic
Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms
the absence of resin duct and leaf venation
the presence of vessel elements and absence of archegonia
perianth and two integuments
perianth and two integuments
In a moss the sporophyte
is partially parasitic on the gametophyte
produces gametes that give rise to the gametophyte
arises from a spore produced from the gametophyte
arises from a spore produced from the gametophyte
Moss peat is used as a packing material for sending flowers and live plants to distant places because
it is easily available
it is hygroscopic
it reduces transpiration
it reduces transpiration
Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
Hydrilla
Yucca
Viola
Banana
