__________ is tough and thick white sheath that protect the inner parts of the eye.

(a)

sclera

(b)

conjunctiva

(c)

cornea

(d)

iris

Maintenance of constant internal environment of the body is known as _________

(a)

Homeostasis

(b)

Homeophytes

(c)

Homeokinesis

(d)

Homeophilics

In the absence of oxygen, glucose is broken down in to ________.

(a)

Lactic acid

(b)

Citric acid

(c)

Acetic acid

(d)

Nitric acid

_____is a thin transparent membrane that is spread across the sclera

(a)

Cornea

(b)

Conjunctiva

(c)

Retina

(d)

Ciliary body

_________million alveoli located at the end of branchial tubes

(a)

480

(b)

300

(c)

100

(d)

200

_______ is the structural and functional unit of living organisms.

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Cell

The largest cell is egg of an _________.

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Ostrich

______ is a good example for anaerobic respiration.

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Yeast

_________is the protective covering of the lungs

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Pleura

In human eye, lens is made up of_________

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Protein

Carbohydrates

(1)

glucose

Glucose

(2)

CO₂ water and heat

Protein

(3)

glcogen and other sugars

Glucose

(4)

enzymes, hormone, protein

Amino acids

(5)

amino acid