Complete the following paragraph by filling in the blanks (i) to (v)with appropriate words:
To test a leaf for starch, the leaf is boiled in water to
(i) _______________,
It is then boiled in Methylated spirit to (ii)___________.
The leaf is dipped in warm water to soften it.
It is placed in a petri dish, and (iii) ________________ solution is added.
The region of the leaf which contains starch, turns (iv) _______________ and
the region which does not contain starch, turns (v) ____________________.

Match the items given in Column A with the most appropriate ones in Column B and
rewrite the correct matching pairs. :

Column A	Column B
(i) Cretinism	(a) Hypersecretion of adrenal cortex
(ii) Diabetes insipidus	(b) Hyposecretion of thyroxine
(iii) Exophthalmic goitre	(c) Hyposecretion of growth hormone
(iv) Adrenal virilism	(d) Hyposecretion of vasopressin
(v) Dwarfism	(e) Hyposecretion of adrenal cortex
--	(f) Hypersecretion of growth hormone
--	(g) Hypersecretion of thyroxine

Correct the following statements by changing the underlined words: :

Normal pale yellow colour of the urine is due to the presence of the pigment Melanin.

The outermost layer of meninges is Pia mater.

The cell sap of root hair is Hypotonic.

Xylem transports starch from the leaves to all parts of the plant body.

Nitrogen bonds are present between the complementary nitrogenous bases of DNA.

Choose between the two options to answer the questions specified in the brackets.
Example: Corolla or Calyx (Which is the outer whorl?) Answer: Calyx

Blood in the renal artery or renal vein (Which one has more urea?)

Perilymph or endolymph (Which one surrounds the organ of Corti?)

Lenticels or stomata (Which one remains open always?)

Sclerotic layer or choroid layer (Which one forms the Iris?)

Blood in the pulmonary artery or pulmonary vein (Which one contains less
oxyhaemoglobin?)

Given below is a representation of a type of pollution.

Study the picture and answer the questions: