What are corals?

(a)  

Name two marine solitary coelenterates.

(a)  

Name the group of animals, which developed nervous system for the first time.

(a)  

In which sub-division does xylem possess vessels?

(a)  

Name the organism which has nervous system but no brain.

(a)  

Which plants are perennial, evergreen and woody?

(a)  

Name the reproductive organs of gymnosperms.

(a)  

Name free living and parasitic flatworms.

(a)  

What are hermaphrodites?

(a)  

Name the group of animals, which has primitive nervous system but with brain which is developed for the first time.

(a)  

Name the first group of animals with true coelom.

(a)  

Define metameric segmentation.

(a)  

Name the cavity present in the coelenterates.

(a)  

What is haemocoel?

(a)