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(a) Identify the organism in the followi...

(a) Identify the organism in the following figure
(b) Label the parts number 1 to 4
(c) Name the phylum in which notochord is present
(d) Name the subphylum in which notochord is present throughout life

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(a) The figure illustrates Amphioxus (Branchiostoma).
(b) 1. Nerve Cord , 2. Notochord , 3. Atriopore , 4. Oral hood
(c) Notochord is present in phylum Chordata
(d) Notochord persists throughout the life in subphylum Cephalochordata (Group Acrania or Protochordata).
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LAKHMIR SINGH & MANJIT KAUR-DIVERSITY IN LIVING ORGANISMS-Diversity In Living Organisms
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