Fill in the boxes given in Fig. 7.2 with appropriate characteristics/plant group (s)

Give examples for the following

(a) Bilateral, dorsiventral symmetry is found in __________.

(b) Worms causing disease elephantiasis is__________.

(c) Open circulatory system is found in__________ where coelomic cavity is filled with blood.

(d) __________ are known to have pseudocoelom.

Label a, b, c and d. given in Fig. 7.1 Give the function (b)

Write names of few thallophytes. Draw a labelled diagram of Spirogyra.

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