Question

Read the paragraph and fill the blanks with the correct option sequence:

The blood vascular system of a cockroach is of (i)___ type, as blood flows in the body cavities. The generalised body cavity is called ii)____. Blood is colourless due to the absence of (iii)____. The heart is (iv)____ and works in coordination with alary muscles for contractions and dilations.

• A. (i) Open (ii) Haemocoel (iii) Hemoglobin (iv) 12 chambered
• B. (i) Open (ii) Haemocoel (iii) Porphyrin (iv) 13 chambered
• C. (i) Open (ii) Blastocoel (iii)Hemoglobin (iv) 12 chambered
• D. (i) Open (ii) Haemocoel (iii) Hemoglobin (iv) 13 chambered

Answer 1

The correct option is D

(i) Open (ii) Haemocoel (iii) Hemoglobin (iv) 13 chambered

Blood vascular system of cockroach is of Open type, as blood flows in the body cavities.The generalised body cavity is called Haemocoel. Blood is colourless due to the absence of haemoglobin. The Heart is 13 chambered and works in coordination with alary muscles for contractions and dilations.