Select the correct statement
Salvinia, Gingko and Pinus all are gymnosperm
Sequoia is oneis one ot the talles trees
The leaves of gymnosperm are not well adapted to extremes of climate
Gymnosperms are both homosporous and heterosporous
The scutellum observed in a grain of Wheat or maize is comparable to which part of the seed in other monocotyledons?
Which one of the following is a correct statements?
Pteridophyte gametophyte has a protonemal and leafy stage
In gymnosperms female gametophyte is free-living
Antheridiophores and archegoniophores are present in pteridophytes
Origin of seed habit can be traced in pteridophytes
The unequivocal proof of DNA as the genetic material came from the studies on a
I) The sporophyte in liverworts is more elaborate than that in mosses
II) Salvinia is heterosporous
III) The life -cycle in all seed - bearing plants is diplontic
IV) In pinus male and female cones are borne on different trees
Statements (I) and (III)
Statement (I) and (IV)
Statements (II) and (III)
Statements (I) and (II)
Which one of the following statements is wrong?
Algin and carrageenian are products of algae.
Agar-agar is obtained from Gelidium and Gracilaria
Chlorella and Spirulina are used as space food
Mannitol is stored food in Rhodophyceae