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The spread of living pteridophytes is li...

The spread of living pteridophytes is limited and is restricted to narrow geographical region because

A

gametophytic growth needs cool, damp and shady places

B

there is requirement of water for fertilisation

C

there is absence of stomata in leaf and absence of vascular tissue

D

both a and b

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The correct Answer is:
D
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  2. In pteridophytes, a spore germinates to produce

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  3. The spread of living pteridophytes is limited and is restricted to nar...

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  5. The heterosporous pteridophytes are

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  7. Match column I with column II and select the correct option from the c...

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  8. The given figure shows a/an

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  9. Which of the following is an aquatic fern?

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  10. Gymnosperms do not bear fruits because they do not have

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  11. Gymnosperms are referred to as "naked seeded plants" because

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  12. Plants which possess seeds but not fruits are

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  13. Gymnosperms do not include

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  14. Mycorrhizal roots of are associated with some fungal symbionts.

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  15. Coralloids roots of have symbiotic association with N(2)- fixing cyano...

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  16. Which of the following gymnosperms has branched stems?

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  17. The leaves of gymnosperms are well-adapted to withstand extremes of te...

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  18. Identify the gymnosperms shown in figure and select the correct option

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