Complete the following paragraph by filling in the blanks (i) to (v) with appropriate words:
(i) __________ make up about 80% of the animal kingdom. Their bodies have a hard, outer covering or exoskeleton made up of a proteinaceous substance called (ii) ________ The body is divided into a (iii) __________ thorax, and (iv) _______ It also bears multiple pairs of jointed legs. Arthropods also have antennae and (v) ________ on their heads.

Cockroach and other insects have exoskeleton made up of :

Complete the following reaction : i. ii. iii. iv.

In maize seed, the outer covering of andosperm separates the embryo by a proteinaceous layer called

About 50 per cent of our body is made up of water.

An arthropod having unjointed legs is

Fill up the blanks appropriately :

Complete the following paragraph by filling in the blanks (i) to (x) with appropriate words : (i)__ is the process of transfer of (ii)___ from the anther to the stigma. The anthers of the (iii)___ produce powdery particles called (iv)____. Each pollen grain contains (v)____ that participates in reproduction. To initiate the process of formation of (vi)____ and (vi)____ the pollen grain must first reach the (viii)____ . When pollen of the same flower falls on its own stigma, it is called (ix)____, whereas when pollen of another flower of the same plant falls on the stigma, it is called (x)____.

Complete the following paragraph by filling in the blanks (1) to (V) with appropriate words: The amount of urine output is under the regulation of a hormone called (i)___________ secreted by the (ii)__________lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii)__________ . Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) __________ leading to the cause of a disease called (v)__________

The exoskeleton of arthropods is made up of _____