A: Thallophytes are non-vascular, non-archegoniate and non-cormophytic plants.
R: Thallophytes lack vascular bundles, archegonia and differentiated plant body.
A: Funaria archegonium has maximum concentration of sucrose at the tip of the neck.
R: Male gametes show chemotropic movement.
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A: Pyrenoids may or may not be surrounded by a sheath of starch plates in algae.
R: In higher plants, these are replaced by amyloplasts.
A: Seeds are formed by some species of spike moss.
R: These species of spike moss fulfil all conditions for seed habit.
A: Endosperm in Cycas is haploid in nature.
R: Cycas roots show association with oxyphoto -bacteria.
A: Sexual reproduction shows considerable variation in the type and formation of sex cells in members of chlorophyceae.
R: It may be isogamous, anisogamous and oogamous.
A: In mosses, the second stage of gametophyte consists of upright, slender axes bearing spirally arranged leaves.
R: This stage of gametophyte consists of sex organs.
A: Events precursor to the seed habit is seen in some members of pteridophytes.
R: Development of the zygotes into young embryos take place within the female gametophyte.
A: Different plant groups show different patterns of life cycles.
R: During life cycle, there is an alternation of generation between diploid gametophyte and haploid sporophyte.
A: Microspores and megaspores are produced in the same lax in gymnosperms.
R: Lax represents compact strobilus which bears microsporophyll and megasporophyll.