Mark the odd one in each series. (a) Areolar tissue; blood; neuron; tendon (b) RBC; WBC; platelets; cartilage (c) Exocrine; endocrine; salivary gland; ligament (d) Maxilla; mandible; labrum; antennae (e) Protonema; mesothorax; metathorax; coxa.

Haritha,Subject Matter Expert at Edumarz

Solution:

(a) Neuron

Reason:Neurons are included in the neural tissue and all others are examples for connective tissues.

(b)Cartilage

Reason:Cartilage is an example for skeletal connective tissue and all others are examples for fluid connective tissue.

(c)Ligament

Reason:Ligament is an example for connective tissue and all others are examples for simple glandular epithelium.

(d)Antennae

Reason:Antennae of the cockroach is not a mouthpart and all others are mouthparts present in the cockroach.

(e)Protonema

Reason:Protonema is a structure found in plants and all others are parts present in the thorax region of cockroaches.