Which one of the following feature is common to leech, cockroach and scorpion? |
|||||||
a) |
Nephridia |
b) |
Ventral nerve cord |
c) |
Cephalization |
d) |
Antennae |
Which one of the following feature is common to leech, cockroach and scorpion? |
|||||||
a) |
Nephridia |
b) |
Ventral nerve cord |
c) |
Cephalization |
d) |
Antennae |
(b)
Ventral nerve cord is common to leech (Annelida), cockroach and scorpion (Arthropoda).
Which of the following cell types is capable of giving rise to other cell types in sponges? |
|||||||
a) |
Thesocytes |
b) |
Pinacocytes |
c) |
Cnidocytes |
d) |
Archaeocytes |
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