Plant Kingdom — Important Questions
ICSE · Class 11 · Biology
104 important questions from Plant Kingdom for ICSE Class 11 Biology, with answers. Includes multiple choice and true false questions. Covers Gymnosperms.
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Important Questions from Plant Kingdom
Agar-agar is obtained from which group of algae?
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Red algae
Agar-agar is extracted from red algae, primarily from Gelidium (lace-like) and Gracilaria. It is used in culture media, food industry, pharmaceuticals and cosmetics.
Which of the following is a moss (bryophyte)?
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Funaria
Funaria is a moss (bryophyte) with a two-stage gametophyte: protonema and leafy gametophore. Marchantia is a liverwort, Selaginella is a pteridophyte, and Psilotum is also a pteridophyte.
Pteridophytes are distinguished from bryophytes by the presence of:
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Vascular tissue
Pteridophytes are the first vascular plants — they possess true xylem (tracheids) and phloem (sieve tubes). Bryophytes completely lack vascular tissue and rely on diffusion.
Gymnosperms have seeds enclosed in a fruit (ovary).
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False
Gymnosperms have NAKED seeds — ovules are borne openly on the surface of megasporophylls, NOT enclosed in an ovary. The name 'gymnosperm' means 'naked seed'. Only angiosperms have seeds enclosed in fruits.
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