Q. Which among the following cell organelles is semi-permeable?
1) Cell membrane
2) Plasma membrane
3) Cell wall
4) Nucleus
Q. The common edible mushroom is a
1) mass of fungal spores
2) tightly packed mycelium
3) type of hypha
4) structure used for producing asexual spores
Q. Breeding and management of bees is called
1) Sericulture
2) Apiculture
3) Silviculture
4) Pisciculture
Q. Excessive consumption of alcoholic drinks causes damage to
1) Liver
2) Lungs
3) Kidney
4) Heart
Q. The fossil of Archaeopteryx represents the evidence of origin of-
1) birds from reptiles
2) mammals from reptiles
3) reptiles from amphibians
4) mammals from birds
Q. The pH of human blood is normally around-
1) 7.5-8.0
2) 4.5-5.5
3) 5.5-6.5
4) 8.5-9.0
Q. Which one among the following vitamins is necessary for blood clotting?
1) Vitamin D
2) Vitamin A
3) Vitamin K
4) Vitamin C
Q. The macro-nutrients provided by inorganic fertilizers are -
1) carbon, iron and boron
2) nitrogen, phosphorus and potassium
3) magnesium, zinc and iron
4) magnesium, manganese and sulphur
Q. Vermicompost is a/an -
1) Inorganic Fertilizer
2) Toxic Substance
3) Organic Biofertilizer
4) Synthetic Fertilizer
Q. Which one among the following statements is correct?
1) All enzymes are proteins
2) All proteins are enzymes
3) None of the enzymes is protein
4) None of the proteins is enzyme
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