31 Years NEET Previous Year Questions: Structural Organisation in Animals - 3

(c) Tendon is dense regular connective tissue. Adipose tissue is a type of loose connective tissue located mainly beneath the cells. Cartilage is a type of specialised connetive tissue. Thus a correct answer is 'C'.

(c) (i) Inner lining of salivary ducts Compound epithelum (ii) Moist surface of buccal cavity Compound epithelium (iii) Tubular parts of nephorns - Cuboidal epithelium.(iv) Inner surface of bronchioles – Ciliated epithelium.(iv) Inner surface of bronchioles – Ciliated epithelium.

(b) The exoskeleton of insects consists of chitinous cuticle. It gets hardened due to deposition of calcium. It prevents dessication and gives protection. 

(b) Methanogens (microorganisms producing methane) are found in the guts of ruminant animals e.g. cows and buffalloes. 

(b) The chitinous exoskeleton of arthropods is formed by the polymerisation of N-acetyl glucosamine. 

(a) Metagenesis is defined as alternation of generation found in phylum cnidaria (eg. Obelia). In this phenomenon one generation of an organism reproduces asexually, followed by a sexually reproducing generation. 

(a) The body cells in cockroach discharge their nitrogenous waste in the haemolymph as a solution of sodium or potassium urate (a weak alkaline fluid). 

(b) Whale is a mammal. It has four chambered heart having two atria and two ventricles. Oxygenated and deoxygenated blood flow in separate circulatory pathways. 

(b) Periplanata americana shows spiral and determinate types of cleavage during embryonic development which is a feature of Protostomes. 

(a) Wall of intestine is made of smooth muscle. Tendons consist of dense regular connective tissue fascicles encased in dense irregular connective tissue sheaths. Tip of nose consists of squamous epithelium. Lining of epithelium is made of columnar epithelium.