Pick out the acoelomate organism from the following:
i) Round worm
ii) Hook worm
iii) Filarial worm
iV) Tapeworm
b) Name the phylum to which it belongs.
c) Mention its mode of nutrition.
d) What is the coelomic condition of other organisms? Substantiatw your answer.

Which of the following statement regarding species interdependence are ture? I . An association of two species where one is benefitted and other remain unaffected is called mutualism. II. An interspecific association where both patnrs derive benefit from each other is called commensalism. III. A dircet food realition between two species of animals in which one animals kills and feed on another,is referred as predation. Iv.A realtionship between two of organisms where both the patners are benifitted from each other is called symbiosis.

A body is projected into air at an angle theta with the horizontal. a)What is the trajectory followed by this projectile? (i) Ellipse,(ii)Parabola,(iii)Straight line,(iv)Circle. b)Give a mathematical proof for your answer. c)Trajectory of a body in a projectile motion is given by y=x-(x^2/80) . x and y are in meters.Find maximum height of this projectile.