Fill in the blanks: a. Simple organisms like sponges and coelenterates circulate 1 from their surroundings through their body cavities to facilitate the cells to exchange of O2,CO2, nutrients and waste products. b. More complex organisms use special fluids within their bodies to transport such materials. The 2 is most commonly used body fluid by most of the higher organisms including humans for this purpose. c. Another body fluid 3 also helps in the transport of certain substances.

Question

Fill in the blanks: a. Simple organisms like sponges and coelenterates circulate 1 from their surroundings through their body cavities to facilitate the cells to exchange of O2,CO2, nutrients and waste products. b. More complex organisms use special fluids within their bodies to transport such materials. The 2 is most commonly used body fluid by most of the higher organisms including humans for this purpose. c. Another body fluid 3 also helps in the transport of certain substances. (A) 1—lymph, 2—water, 3—blood (B) 3—lymph, 1—water, 2—blood (C) 2—lymph, 3—water, 1—blood (D) 2—lymph, 1—water, 3—blood

Tardigrade Admin · Accepted Answer

a. Simple organisms like sponges and coelenterates circulate water from their surroundings through their body cavities to facilitate the cells to exchange of

O_{2}, C O_{2}

, nutrients and waste products.
b. More complex organisms use special fluids within their bodies to transport such materials. The blood is most commonly used body fluid by most o f the higher organisms including humans for this purpose.
c. Another body fluid, lymph also helps in the transport of certain substances

$1$ —lymph, $2$ —water, $3$ —blood

$3$ —lymph, $1$ —water, $2$ —blood

$2$ —lymph, $3$ —water, $1$ —blood

$2$ —lymph, $1$ —water, $3$ —blood