5. Differentiate halpontic and diplontic life cycle.
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6. What is plectostele? give example.
1.It is a stele subgroup where Xylem is surrounded by phloem
2. In this condition xylem plates alternate with phloem plates.eg. Lycopodium clavatum
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7. What do you infer from the term pycnoxylic?
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8. Mention two characters shared by gymnosperms and angiosperms.
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9. Do you think shape of chloroplast is unique for algae. Justify your answer?
Chloroplasts in algae show a huge variety of shapes, unlike higher plants which usually have disc-shaped ones.
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10. Do you agree with the statement ‘Bryophytes need water for fertilization’? Justify your answer.
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| Bryophytes |
Yes.
Antheridia produce flagellated sperm cells that need water to swim to the female archegonium and fertilize the egg
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