The nerve cord of earthworm bifurcates anteriorly in "A__ segments, encircles pharynx "B___, and joins cerebral ganglia "C___" to form a nerve ring .Identify "A,B&C

Examine the ventral view of earthworm and identify A, B and C

Fill in the blanks: a. A pair of short and conical ...K.. caecae project from the intestine on the...L...segment. b. Typhlosole is the internal median fold of ...M..wall of intestine. c. Earthworm..N..specialised breathing devices. d. The nerve cord in the anterior region (3^(rd) and 4^(th) segment) bifurcates, laterally encircling the...Q...and joins the cerebral ganglia.

Can a triangle be formed by line segment of lengths a,b and c, such that a=b-c ?

Can a triangle be formed by line segment of lengths a,b and c, such that a gt b-c ?

How many line segments will we get after joining the points A, B, C and D?

What are the coordinates of the point c, such that B(1/2,6) divides the line segment joining the points A(3, 5) and C in the ratio of 1 : 3 ?

Angle formed in minor segment of a circle is acute (b) obtuse (c) right angle (d) none of these

Read the following statements about phylum Annelida. Identify the true and false statements and select the correct option after referring to the given table . A. Annelids are diploblastic , metamerically segmented , coelomate animals. B. Their neural system consists of paired ganglia connected by lateral nerves to a single ventral nerve cord . C. They process longitudinal and circular muscle fibres which help in locomotion . D Nephridia help them in osmoregulation and excretion.

If the line segment joining the points A(a,b) and B(c,d) subtends an angle theta at the origin, then costheta is equal to