The organic reaction which proceed through heterolytic bond cleavage are called
(A) ionic
(B) polar
(C) nonpolar
(D) Both (A) and (B)

The lateral petals of vexillary corolla are called (a) Vexilla (b) Alae (c) Carina (d) Both b and c

Body is segmented in (a) Arthropoda (b) Cnidaria (c) Annelida (d) Both (a) and (c)

In which phase of cell division are oogonia arrested (A) Anaphase II (B) Anaphase I (C) Interphase (D) Both A and B

In Earthworm, neurons are (a) Sensory (b) Motor (c) Both a and b (d) Mixed

Which of the following organisms is radially symmetrical? (A) Pila (B) Echinus (C) Cucumaria (D) Both (B) and (C )

Acquired immunity is also called (A) Adaptive immunity (B) Specific immunity (C) Nonspecific immunity (D) Both A and B

The primary treatment basically involves the physical removal of particles from the sewage through (A) filtration (B) sedimentation (C) microbial treatment (D) Both (A) and (B)

Which of these organisms are protected by people of 'Bishnoi' community of Rajasthan? (a) Prosopis cineraria (b) Black buck (c) Bhojpatra (d) both (a) and (b)

Amphibian larvae possess (A) gills (B) gills and unpaired fins (C) both paired and unpaired fins (D) both A and B