Obelia is characterised by
A. Ciliated free swimming planula larva
B. Metagenesis ltBrgt C. Acraspedote medusa
D. statocysts present in medusoid stage

Choose the correct statement. a. Hydra and Adamsia both belongs to same class and exhibit only polyp from b. Planula larva of Obelia is formed from polyp from c. planula larva is ciliated and formed from zygote through cleavage d. In most coelenterates fertilisation is external

Type of inflorescence present in pea family is characterised by (a) Acropetal arrangement of gamopetalous flowers (b) Indefinite growth of peduncle (c) Centrifugal opening of flowers (d) Basipetal arrangement of flowers

Read the following and select the only true statement about cockroach. A . Each Malpighian tubule is lined by glandular and ciliated cells. B. A characteristic mushroom gland is present in the female cockroach in the 6th - 7th abdominal statements . C. Both compound eye consists of about 2000 hexagonal ommatidia. D. The development of P. americana is paurometabolous through the nymphal stage.

Echinoderms are characterised by (a) Exclusively marine habitat and calcareous endoskeleton (b) Presence of water vascular system and tube feet for locomotion (c) Bilateral symmetry in larvae and radial symmetry in adults (d) All of these

Find out the CORRECT Statement. (a) Ciliated epithelium present in convoluted parts of nephric tubule absorb only has striated involuntary muscles. (b) Haversian canals are interconnected by canaliculi and lacunae. (c) Abdominal wall in our body has striated involuntary muscles. (d) Elastic cartilage is present in the tip of our nose

Which of the following statement are not true about shark? a. The skin is tough and covered with placoid scales. b. They possess a swim bladder which regulates buoyancy. c. the tail of shark is heterocercal. d. Ampulla of lorenzini present in the snout of shark is thermoreceptor. e. it has five pairs of gill slits covered by operculum.

Which of the following statement are not true about shark? a. The skin is tough and covered with placoid scales. b. They possess a swim bladder which regulates buoyancy. c. the tail of shark is heterocercal. d. Ampulla of lorenzini present in the snout of shark is thermoreceptor. e. it has five pairs of gill slits covered by operculum.