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Bryophyta

Question 2 Ho...

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Question 2
How are Pteridophyta different from the phanerogams?

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Solution

$\begin{matrix} P t e r i d o p h y t a & P h a n e r o g r a m s T h e y h a v e i n c o n s p i c u o u s o r l e s s d i f f e r e n t i a t e d & T h e y h a v e w e l l d e v e l o p e d r e p r o d u c t i v e r e p r o d u c t i v e o r g a n s & o r g a n s T h e y p r o d u c e n a k e d e m b r y o s c a l l e d s p o r e s & T h e y p r o d u c e s e e d s F e r n s, M a r s i l e a, E q u i s e t u m, e t c . a r e e x a m p l e s o f & P i n u s, C y c a s, f i r, e t c . a r e e x a m p l e s o f p t e r i d o p h y t a & p h a n e r o g a m s \end{matrix}$

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Q. Question 51
Thallophyta, bryophyta and pteridophyta are called as ‘Cryptogams’. Gymnosperms and Angiosperms are called as ‘phanerogams’. Discuss why? Draw one example of Gymnosperm.

Q.  How are pteridophytes different from the phanerogams?

Write two important characteristics of:

(1) Mollusca

(2) Phanerogams

(3) Pteridophyta

(4) Bacteria

(5) Reptilia

(6) Protista

Q. Which of the following are the correct differences between pteridophytes and phanerogams.
1. Pteridophytes have vascular tissue and phanerogams do not have vascular tissue
2. Pteridophytes are non flowering plants whereas, phanerogams are flowering plants.
3. Pteridophytes are seedless plants whereas, phanerogams are seed bearing plants.
4. Pteridophytes can reproduce by formation of spores whereas, phanerogams cannot reproduce by formation of spores.

Q. Identify the correct difference between gymnosperms and angiosperms.
1. Gymnosperms do not form fruit, angiosperm form fruit.
2. Gymnosperms have naked seeds, angiosperms have enclosed seeds.
3. Gymnosperms are dicots, all angiosperms are monocots.
4. Gymnosperms are phanerogams, angiosperms are not phanerogams.

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