On which criteria is chemotaxonomy based ?Can it be used for classification?

2

(a)

Natural system of classification is considered better than artifiicial system of classification. Explain.

2

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On the basis of which three features, Selaginella shows traits of seed habit?

2

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To which class of Bryophyta Anthoceros belong? Why is it called a hornwort?

2

(a)

Vasular tissues are not present in bryophytes. Then how the conduction of water and food takes place?

2

(a)

Why are bryophytes called as 'amphibians of plant kingdom'?

2

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Both gymnosperms and angiosperms bear seeds, then why are they classified separately?

2

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You are given microsporophyll of gymnosperms and angiosperms without any labeling. How will you differentiate both?

2

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How do angiosperms support pollinators to carry out pollination is contrast to gymnosperms?

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The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. Make an attempt to compare the reproductive parts in the table given below?

Pteridophytes & Gymnosperms	Angiosperms
Strobila/cones	a
Archegonia	b
Anthridia	c
Spores	d

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(a)