Kingdom Plantae — Flashcards
Maharashtra Board · Class 11 · Biology
24 flashcards for Kingdom Plantae (Maharashtra Board Class 11 Biology) to test yourself on key terms and facts.
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What is the fundamental difference between Cryptogamae and Phanerogamae?
Answer
Cryptogamae are spore-producing plants that do not produce seeds and flowers. They reproduce sexually by gametes but sex organs are concealed (kryptos = hidden, gamos = marriage). Examples: Algae, Bry…
Define Thallophyta and list their main characteristics.
Answer
Thallophyta includes algae - mostly aquatic plants with undifferentiated plant body called thallus. Characteristics: • Plant body is thalloid (no true root, stem, leaves) • Mostly aquatic (marine/fre…
Compare the three major classes of algae based on pigments and examples.
Answer
1. Chlorophyceae (Green algae): • Pigments: Chlorophyll a and b • Mostly freshwater • Examples: Chlorella, Chlamydomonas, Spirogyra, Chara 2. Phaeophyceae (Brown algae): • Pigments: Chlorophyll a, c …
Why are Bryophytes called 'amphibious plants'?
Answer
Bryophytes are called 'amphibious plants' because: • They are mostly terrestrial and grow in moist, shady places • They need water for fertilization and completion of their life cycle • Like amphibian…
Differentiate between liverworts and mosses in Bryophyta.
Answer
Liverworts (Hepaticae): • Lower/primitive members • Flat, thalloid plant body • Dorsiventral, prostrate growth • Unicellular rhizoids • Examples: Riccia, Marchantia Mosses (Musci): • Advanced members…
What makes Pteridophytes the 'first successful terrestrial plants'?
Answer
Pteridophytes are called first successful terrestrial plants because: • They are the first vascular plants with true conducting tissues (xylem and phloem) • They have true roots, stem, and leaves (dif…
List the four classes of Pteridophyta with examples.
Answer
1. Psilopsida - Psilotum 2. Lycopsida - Selaginella, Lycopodium 3. Sphenopsida - Equisetum 4. Pteropsida - Dryopteris, Pteris, Adiantum (Ferns) Note: These represent different evolutionary lines with…
Define Gymnospermae and explain why they are called 'naked seed plants'.
Answer
Gymnospermae (Gymnos = naked, sperma = seed) are primitive flowering plants that produce naked seeds. Called 'naked seed plants' because: • Seeds are not enclosed within fruits/ovaries • Seeds develo…
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