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Prothallus in ferns is a ……..... structu...

Prothallus in ferns is a ……..... structure.

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To answer the question "Prothallus in ferns is a …..... structure," we need to analyze what prothallus is and its characteristics. ### Step-by-Step Solution: 1. **Definition of Prothallus**: Prothallus is also known as prothelium. It is a crucial structure in the life cycle of ferns. 2. **Structure Characteristics**: The prothallus is a flat, green, and heart-shaped (cordate) structure. It is dorsiventral, meaning it has distinct upper and lower surfaces. ...
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ICSE-PLANT KINGDOM -Test Your Progress (Fill in the blanks with appropriate words)
  1. The ovule bearing structure in the megasporophyll of Pinus is called ....

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  2. Pollen grains of Pinus are......

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  3. In gymnosperms, ......... lacks .... canal cells.

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  4. Pollination in gymnosperms is ........... and takes place by the agenc...

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  5. ....... are plants without vascular system and the body is not differ...

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  6. r-phycocyanin and r-phycoerythrin are biliproteins and are found in me...

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  7. Bryophytes are characterized by the presence of conspicuous ............

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  8. In gymnosperms xylem lacks …….. and phloem ...........

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  9. Cycas resembles with ferns in having ……….. vernation.

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  10. Presence of ……….... canals is characteristic feature of conifers.

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  11. The endosperm in gymnosperms is a ……… tissue, while in angiosperm, ……...

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  12. Plants that live for less than one year are called ....... and those l...

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  13. An epiphyte gets its nutrients from the …………. whereas a parasite from...

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  14. Bryophytes have a life cycle with alternation of a haploid, sexual ge...

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  15. Kelps are the rich source of ……

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  16. The male and female sex organs of bryophytes are called .......... and...

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  17. In bryophytes, the sporophyte is concerned with the production of …......

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  18. Prothallus in ferns is a ……..... structure.

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  19. The formation of more than one embryo from the zygote is called ........

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