Read the following statements.  a) Exoskeleton of scales, eggs laying outside water …………….. features of Reptelia 

Correct Answer - `[{:(3,2,5),(5,3,6),(2,4,3):}]`

Correct Answer - (i) `1/5` (ii) `1/3` (iii) `1/2`

Correct Answer - `"Mean "=(6)/(4), "variance "=(30)/(49)`

Triple point of water is, T = 273.16 K Since the absolute scales measure the triple point as 200 A and 350 B. ∴ 200A = 350B = 273.16 K ∴ 1A = \(\frac{273.16}{200}\)K and...

B) Echidna and Platypus

Exoskeleton: Tough, waxy, non-living chitinous exoskeleton protects the body of the cockroach. It is made up of nitrogenous polysaccharide – chitin that provides strength, elasticity and surface area for attachment of...

The supportive structures present inside the body form the endoskeleton and when the supportive structures are present on the outer surface of the body they form exoskeleton.

C) Desert ecosystem

Correct Answer - D Use the concept of Venn diagrams.

Correct Answer - Amphibia