Biology Mcqs

Nervous system of nematods consists of?

A. Ventral nerve cord
B. Dorsal nerve cord
C. Lateral nerve cord
D. All of these

All of the following are true for Platyhelminthes except____________?

A. Flatwarms
B. Triploblastic
C. Coelomate
D. Bilateral symmetry

Exoskeoeton of coelenterates terates is made up to__________?

A. Calcium
B. Silica
C. Chitin
D. Both A & B

Pseudocoelem develops from____________?

A. Blastopore
B. Plastoquinone
C. Blastocoel
D. Splitting of mesoderm

Excretory system of platyhlminthes consists of___________?

A. Nephridia
B. Flame cells
C. Malpighian tubules
D. Nephrons

All of the following coelenterates show alternation of generation except:

A. Hydra
B. Obelia
C. Aurelia
D. None of these

Enteron in coelenterates acts as___________?

A. Digestive cavity
B. Body cavity
C. Transporting cavity
D. all of these

Porifera range in size from__________?

A. Few millimeter wide to more than one meter tall
B. Few centimeter wide to more than one meter tall
C. Few decimeter wide to more than one meter tall
D. One meter wide to more than millimeter tall.

Coelom is lined by__________?

A. Parietal mesoderm
B. Visceral mesoderm
C. Mesoderm
D. Both A & B

Of the following which one is not the characteristic of Kingdom Animalia.

A. All animals are ingestive heterotrophs
B. All animals are eukaryotes
C. All animals develop from the dissimilar gametes i.e. large sperm and small egg.
D. It is largest kingdom.