Correct option is C
The correct answer is: 3. A-iv, B-iii, C-ii, D-i
Explanation:
The question involves matching classes of the phylum Arthropoda with their characteristic head structures. Let's break down the given options:
A. Arachnida:
Head structure: Cephalothorax with two chelicerae, two pedipalps. This is the characteristic head structure of Arachnids, which include spiders, scorpions, and ticks. Hence, A – iv is correct.
B. Crustacea:
Head structure: Five segmented head with two pairs of antennae, two pairs of maxillae, and one pair of mandibles. This is the characteristic structure of Crustaceans such as crabs, lobsters, and shrimps. Therefore, B – iii is correct.
C. Myriapoda:
Head structure: Head is distinct having a pair of simple eyes, paired antennae, and paired mandibles. This is typical of Myriapods, such as centipedes and millipedes. So, C – ii is correct.
D. Insecta:
Head structure: Head is distinct with a pair of compound eyes, a paired antennae, a paired mandibles, and a paired maxillae. This is characteristic of Insects, such as bees, butterflies, and ants. Therefore, D – i is correct.
Information Booster:
Arachnids have a cephalothorax (fusion of head and thorax) and possess chelicerae (mouthparts) and pedipalps (sensory appendages).
Crustaceans like crabs and lobsters have five segments on their head, with specialized appendages such as antennae and mandibles.
Myriapods have a distinct head with simple eyes and paired antennae, which helps them in sensing their environment.
Insects are known for their compound eyes, antennae, and mouthparts, making them highly adapted for various ecological niches.
