01. The magnetic field lines inside a long current-carrying solenoid are nearly :
(1) Circular
(2) Parabolic
(3) Straight
(4) Elliptical
02. Ice is floating on water in a beaker when ice completely melts then level of water in beaker :
(1) Increases
(2) Decreases
(3) Remains the same
(4) First increases then decreases
03. A cell will plasmolyse, if it is placed in:
(1) Hypertonic solution
(2) Hypotonic solution
(3) Isotonic solution
(4) Concentration of water molecules does not matter
04. In Xerophytes, the rate of water loss get reduced due to covering of epidermis by:
(1) Cutin
(2) Suberin
(3) Lignin
(4) Gum
05. During lack of oxygen in tissues of our body, the pyruvate is converted into lactic acid in:
(1) Mitochondria
(2) Nucleus
(3) Cytoplasm
(4) Ribosome
06. Kidneys do not perform the function of:
(1) Regulation of blood pressure
(2) Filtration of blood
(3) Regulation of ions concentration
(4) Secretion of anti bodies
07. Double fertilization is a unique feature of:
(1) Bryophytes
(2) Angiosperm
(3) Algae
(4) Gymnosperm
08. Phototropic and geotropic response of a plant is under control of following hormone:
(1) Auxin
(2) Gibberlin
(3) Cytokinin
(4) Ethylene
09. The following blood vessel does not contain deoxygenated blood:
(1) Pulmonary artery
(2) Vena Cava
(3) Hepatic vein
(4) Pulmonary Vein
10. Photosynthesis is an important mode of autotrophic nutrition. The event which does not occur in photosynthesis is:
(1) Conversion of light energy to chemical energy
(2) Reduction of carbon dioxide to carbohydrate
(3) Oxidation of carbon to carbondioxide
(4) Absorption of light energy by chlorophyll
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