What is the primary evolutionary significance of pteridophytes?
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9:
Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?
Gametophyte in the pteridophytes
(i) Small, inconspicuous.
(ii) unicellular.
(iii) Mostly photosynthetic thalloid
(iv) need water for fertilisation
How many statements are correct with respect to gametophyte?
The spread of living pteridophytes is limited and is restricted to narrow geographical region because of
Pick the correct group consisting of all genera exhibiting homospory.
Identify the incorrect statement regarding the reproduction in pteridophytes:
Assertion (A): The development of zygotes into young embryos takes place within the female gametophytes.
Reason (R): This event is a precursor to the seed habit, considered an important step in evolution
What is the term for the leaf-like appendages that subtend the sporangia in pteridophytes?
The leaves in pteridophyta are small (microphylls) as in ________or large (macrophylls) as in _________.
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