a) (i) The phylum to which specimens R (crab) and Q (scorpion) belong is Arthropoda.
This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
a) (i) The phylum to which specimens R (crab) and Q (scorpion) belong is Arthropoda.
a) (ii) Two reasons for this answer are:
• They both have an exoskeleton made of chitin.
• They both have segmented bodies and jointed appendages.
b) (i)
R (crab) belongs to the class Crustacea.
Q (scorpion) belongs to the class Arachnida.
b) (ii)
Reasons for R (Crustacea):
• Its body is divided into a cephalothorax and abdomen.
• It possesses two pairs of antennae.
Reasons for Q (Arachnida):
• Its body is divided into a cephalothorax and abdomen.
• It possesses four pairs of walking legs and lacks antennae.
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