[13 Figure 3.2 shows the position of the plumule after exposure of a sing to one-
(c)
sided light for five days
Light from one side
(1)
Figure 3.2
Explain the effects of one sided light on the tip of the Plumule
(2)
What is the benefit of this effect to the seedling?
12]
[Total 81
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explanation:

yes you are doing it right great gob

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.