Ordinary table salt is sodium chloride. What is baking soda?
Potassium chloride
Potassium carbonate
Potassium hydroxide
Sodium bicarbonate
Ozone hole refers to
hole in ozone layer
decrease in the ozone layer in troposphere
decrease in thickness of ozone layer in stratosphere
increase in the thickness of ozone layer in troposphere
Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to
angiosperms
gymnosperms
monocotyledons
dicotyledons
Pollination is best defined as
transfer of pollen from anther to stigma
germination of pollen grains
growth of pollen tube in ovule
visiting flowers by insects
Plants receive their nutrients mainly from
chlorophyll
atmosphere
light
soil
Movement of cell against concentration gradient is called
osmosis
active transport
diffusion
passive transport
Photosynthesis generally takes place in which parts of the plant?
Leaf and other chloroplast bearing plants
steam and leaf
Roots and chloroplast bearing plants
Bark and leaf
Plants synthesis protein from
starch
sugar
amino acids
fatty acids
Plants absorb dissolved nitrates from soil and convert them into
free nitrogen
urea
ammonia
proteins
One of the following is not a function of bones.
Place for muscle attachment
Protection of vital organs
Secretion of hormones for calcium regulation in blood and bones
Production of blood corpuscles