Biology MCQs

1. What do we call the roots of some orchid plants, which hang in the air and absorb moisture from it?
[A] Assimilatory Roots
[B] Epiphytic Roots
[C] Sucking Roots
[D] Stilt Roots

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2. What is the primary role of lipids in the body?
[A] provide energy for muscles and body processes
[B] maintain normal blood volume and normal water content in interstitial fluid
[C] extract waste from blood, balance body fluids, form urine
[D] produce certain proteins for blood plasma

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3. The cells of all living biological matter are made of four major elements. The elements are: 
[A] Carbon, Hydrogen, Oxygen and Phosphorous
[B] Carbon, Hydrogen, Oxygen and Nitrogen
[C] Carbon, Hydrogen, Oxygen and Sulphur
[D] Sodium, Chlorine, Potassium and Magnesium

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4. Which hormones does pancreas secret?
[A] Testosterone
[B] Progesterone
[C] Prolactin
[D] Glucagon and insulin

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5. Which plants grow well only in light?
[A] Heliophytes
[B] Xerophytes
[C] Sciophilous
[D] Epiphytes

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6. Which of the following is a fibrous protein?
[A] Enzymes
[B] Keratin
[C] Haemoglobin
[D] Albumin

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7. Which of the following at the opposite of micropylar end represents the basal part of the ovule?
[A] Hilum
[B] Nucellus
[C] Chalaza
[D] Funicle

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8. What is the full form of DNA?
[A] Deoxyribonucleic acid
[B] Di nucleic acid
[C] Diribo nucleic acid
[D] Dual nitrogen acid

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9. Epiphytes are plants which depend on other plants for?
[A] food
[B] mechanical support
[C] shade
[D] water

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10. Which among the following is responsible for the red colour of blood?
[A] Haemoglobin
[B] Platelets
[C] Plasma
[D] None of the above

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