Hilsa, Bee, Penguin, Rauwolfia - Assesse which are the causes of endangered of the above-mentioned organisms.

Hilsa, Bee, Penguin, Rauwolfia-Assess which are the causes of endangeredness of the above-mentioned organisms.

wavelength, frequency, velocity and intensity of light when travelling in air is lambda, nu, v and I respectively, When the light ray enters water the value of the above mentioned properties become lambda_(1),nu_(1),v and I_(1) respectively. Which relation is correct?

Which organism causes Pertussis?

When phenol is reacted with CHCI_3 and NaOH followed by acidification, salicylaldehyde is obtained. Which of the following species is/are involved in the above mentioned reaction as intermediate(s)?

The equation of the vibration of a wire is y = 5 "cos"(pi x)/(3) sin 40 pi t , where x and y are given in cm and t is given in s. calculate the amplitudes and velocities of the two waves which on superposition, from the above-mentioned vibration,

"Poaching is one of the fundamental causes of endangeredness of animal diversity in India"-Assess four causes for which animals are poached in India.

The smallest organisms which cause diseases among plants are

Name two pathogenic organism which causes water pollution.

The following is the illustration of the sequence of ovarian events (a - 1) in a human female. (a) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents. (b) Name the pituitary hormone that has caused the above mentioned event. (c) Explain the changes that occur in the uterus simultaneously in anticipation (d) Write the differences between 'c and 'h'. (e ) Draw a labelled sketch of the structure of a human ovum prior to fertilization.