CBSE 2026 · Region 5 · Set 1 · Q24 · 3 marks
Study the given chart showing evolution of plants. Answer the following questions :
(a)Identify the plant which acts as an immediate ancestor of both ferns and conifers.(b)Name the nearest ancestors of flowering plants.(c)Name the most primitive group of plants.(d)Psilophyton provides common ancestry to which classes ?(e)Name the common ancestor of psilophyton and seed ferns.(f)Name the common ancestor of mosses and tracheophytes.
Study the given chart showing evolution of plants. Answer the following questions :
(a)
Identify the plant which acts as an immediate ancestor of both ferns and conifers.
(b)
Name the nearest ancestors of flowering plants.
(c)
Name the most primitive group of plants.
(d)
Psilophyton provides common ancestry to which classes ?
(e)
Name the common ancestor of psilophyton and seed ferns.
(f)
Name the common ancestor of mosses and tracheophytes.
Marking-scheme solution
(a)
Psilophyton
(b)
Seed ferns
(c)
Chlorophyte ancestors
(d)
Ferns, Conifers, Seed ferns
(e)
Tracheophyte ancestors
(f)
Chlorophyte ancestors
EvolutionA Brief Account of EvolutionUnderstandshort_answermedium
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CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.