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Chapter 3 Plant Kingdom Solutions

Question - 11 : - Match the following (column I with column II)

Column I

Column II

(a) Chlamydomonas

(i) Moss

(b) Cycas

(ii) Pteridophyte

(c) Selaginella

(iii) Algae

(d) Sphagnum

(iv) Gymnosperm

Answer - 11 : -

Column I

Column II

(a) Chlamydomonas

(iii) Algae

(b) Cycas

(iv) Gymnosperm

(c) Selaginella

(ii) Pteridophyte

(d) Sphagnum

(i) Moss

Question - 12 : - Describe the important characteristics of gymnosperms.

Answer - 12 : -

The main characteristics of gymnosperms are as follows

(i) In Gymnosperm the ovules are not enclosed by ovary. They are exposed before and after fertilization.

(ii) The seeds are naked

(iii) Gymnosperms include medium sized trees or tall trees and shrubs.

(iv) The roots are taproots

(v) The stems are branched or unbranched.

(vi) Leaves simple and compound

(vii) The plant body is separated into roots, stems and leaves and is sporophyte

(viii) They produce two kinds of spores, so they are called heterosporous

(ix) Fertilization takes place in the absence of external water from syphonogamy.

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