Phylum Hemichordata MCQs with Answers

Phylum Hemichordata MCQs

Hello students, our next topic for the MCQ is ‘PHYLUM HEMICHORDATA’. The phylum Hemichordata was under phylum chordata. But in the present study it is placed as separate phylum under non-chordate. Hemichordata includes worm like soft bodied animals and live in shallow burrows in the sandy sea bottom. These are triploblastic and coelomate animals.

The following MCQ will help you more to understand ‘PHYLUM HEMICHORDATA’.

 

MCQ.1):The Acorn worms have ……………………….……… for the burrowing and feeding.

a)Beak

b) Podia

c) Proboscis

d) Mandible

 

MCQ.2):The circulation in the Hemichordata organisms is of ………………………… type.

a)Open type

b)Closed type

c) In body

d)None of these

 

MCQ. 3):The ………………………… is also called as the tongue worm due to the resemblance of the proboscis and genital wings.

a)Balanoglossus

b)Ascaris

c)Filarial worm

d)Cestoda

 

MCQ.4):The body of the Balanoglossus is divided into three parts and are Anterior proboscis, ……………. And Posterior trunk.

a)Post abdomen

b)Primary head

c)Middle thorax

d)Middle collar

MCQ.5)……………………………… is an internal organ of Balanoglossus and it consists of pharynx, gonads and hepatic region.

a)Central sinus

b)Proboscis

c)Trunk

d)Collar

 

MCQ.6: In the reproduction of Balanoglossus, fertilization occurs externally and the development includes ……………………………………………………………… larva.

a)Tornoria

b)Collarette

c)Genital wings

d)Gill pores

 

MCQ.7):Which of the following class is colonial zooid and it constructs rigid tube in the hemichordate phylum?

a)Centripode

b)Chilopoda

c)Pterobranchia

d)Uniramous

 

MCQ.8):Which is a longitudinal, flexible rod of cartilage that is located between the gut and dorsal nerve cord?

a)Medulla oblongata

b)Notochord

c)Cerebellum

d)Cerebrum

 

MCQ.9):If the muscles segment of cephalochordate develops from blocks of mesoderm then it is called as ……………………………………………………………………………..

a)Somites

b)Neural plate

c)Cranium

d)Spinal cord

 

MCQ.10):…………………………………………………………………….. Are called as gill arches of the most anterior pharyngeal gill slits became the jaw in placoderms.

a)Atriopore

b)Paired fins

c)Skeletal rods

d)Pharyngeal slits

 

Answer

1)c) Proboscis

2)b) Closed type

3)a) Balanoglossus

4)d) Middle collar

5)c) Trunk

6)a) Tornoria

7)c) Pterobranchia

8)b) Notochord

9)a) Somites

10)c) Skeletal rods


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