Fern spores are usually
Haploid
Diploid
Triploid
Tetraploid
A.
Haploid
In pteridophytes, spore is a haploid structure, which develops after meiosis in the spore mother cell. On germination, it gives rise to a green haploid prothallus (gametophyte) which is monoecious, i.e., has both antheridia (male sex organs) and archegonia (female sex organs).
After karyogamy followed by meiosis, spores are produced exogenously in
Neurospora
Alternaria
Saccharomyces
Agaricus
Which one is wrongly matched?
Uniflagellate gametes – Polysiphonia
Biflagellate zoospores – Brown algae
Unicellular organism – Chlorella
Gemma cups – Marchantia
Identify the wrong combination
Dryopteris → Rhizome
Cycas → Coralloid roots
Volvox → Colonial form
Marchantia →Pseudoelaters
Which of the following supports a dense population of plankton and littoral vegetation?
Oligotrophic
Eutrophic
Lithotrophic
Agroecotrophic
