The nematodes are
A. Monoblastic
B. Duoblastic
C. Triploblastic
D. All of these
Answer: Option C
Solution(By Examveda Team)
The nematodes are Triploblastic.Triblobtastic organisms are those in which there are three primary germ layers: the ectoderm, mesoderm, and endoderm.
Nematodes are very small, slender worms: typically about 5 to 100 µm thick, and 0.1 to 2.5 mm long. The smallest nematodes are microscopic, while free-living species can reach as much as 5 cm, and some parasitic species are larger still, reaching over 1 m in length. The body is often ornamented with ridges, rings, bristles, or other distinctive structures.
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Which photosynthetic bacteria possess both PS I and PS II?
A. Purple sulphur bacteria
B. Cyanobacteria
C. Purple nonsulphur bacteria
D. Green sulphur bacteria
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