Question

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Answer 1

Required Answer:-

The most appropriate alternatives of column B that matches the items asked in column A are:

• Area of finest vision: Yellow spot

Explanation: It is the region where maximum number of cones and rods are found, image is produced with highest clearness and focus. Also known as fovea centralis.

• Clotting of blood: Calcium

Explanation: Calcium is the most important mineral the several process that takes place in the formation of clots around wound$.$

• Cretinism: Hyposecretion of thyroxine

Explanation: Hypo means less or deficient. It is a common disorder among infants or children caused due to the deficiency of iodine.

• Stroma: Site of light independent reaction

Explanation: Stroma is the matrix and semi fluid region of chloroplasts where light independent reaction or dark reaction takes in order to recuce carbon to carbohydrates with the help of assimilatory powers.

• Perilymph: Fluid present around the median canal of cochlea.

Explanation: There are three regions in the cochlea where two kinds of fluids are found. The perilymph is found inside scala vestibuli and scala tympani which surrounds the median canal containing endolymph.

Answer 2

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Match the items given in column A with the most appropriate ones in column B and rewrite the correct matching pairs –

1) Area of finest vision - Yellow spot

• The yellow spot is the region of greatest visual acuity around the eye fovea !

2) Clotting of blood - Calcium

• Calcium help to stop flowing blood. It help in clotting it.

3) Cretinism - Hyposecretion of thyroxin

• In the term hyposecretion, hypo means less. It's a disorder of thyroxin causes by Iodine's deficiency.

4) Stroma - Site lf light independent reaction.

• Actually it take place in cell named mesophyll and the carbon dioxide diffuse into stomata. It happens in the reaction of photosynthesis.

5) Perilymph - Fluid present around medium canal of cochles

• Fluid present around medium canal of cochles are of two types one named as Perilymph and the second one as Endolymph fluid.