Dorsal surface of Leech is Orange Yellow or Red in colour. (False)
Correct Statement: Dorsal surface of Leech is Olive green in colour.

True or false .If False , give the correct statement: Whales come up to the water surface to breathe in oxygen.

True or False - if false give the correct statement : Agar Agar is extracted from red algae.

True or False.If False, give the correct statement: Seas are formed when the water table meets the land surface.

Several statement are giv here in reference to cone cells which of the following option indicates all correct statement for cone cells ? Statement (i) Cone cells are less sensitive in bright light than Rod Cells (ii) They are responsible for colour vision (iii) Erythropsin is a photo pigment which is sensitive to red colour light (iv) They are present in fovea of retina

True or False - if false give the correct statement : The head of a matchstick contains red phosphorous.

Which one of the following statement is a correct statement When two surfaces are coated with a lubricant then they

Assertion: In intergenic gene interactions, interlocus interactions take place between the alleles at different loci. Reason: In the first locus, the white is dominant to yellow and green colour wheras in the second locus, yellow is dominant to green colour.

True or False - if false give the correct statement : Blue green algae increases the fertility of the soil.

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. Write the colours of the Spectrum ?

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. How do emergent rays appear ?