Annelida: Which of the following statements about annelids...

Annelida: Which of the following statements about annelids are true? Tick all answers that you believe to be correct. Annelids have several hearts pumping blood in a closed circulatory system The European earthworm Lumbricus terrestris is a hermaphrodite All annelids feed on decaying plant material All annelids are radially symmetrical Annelids have a segmented body and a cuticle

Transcript

00:01 So, in the question, a few options regarding annalids have been given and we have to find which is the correct one.

00:08 Okay.

00:08 So first, what are analyze? analydes are segmented worms and they are one of the oldest phyla.

00:21 Okay.

00:23 What is the first option that is given regarding it? see, it has given that analydes have several hearts pumping blood in a close circulatory system and this is correct okay one of the characteristics of analides is closed circulatory system what does closed circulatory system means it means that the blood passes through blood vessels okay so it is enclosed rather in a blood vessels hence it is a closed circulatory system okay now it is also mentioned that they have several hearts okay the closed circulatory system of anilids are not same for every aneurate okay for example in earthworm we find that it has five erotic arch which behave like a heart okay in leech it has two tubular heart again in some worms such as polyket worms either they will have no heart or they will have one heart which is very small okay but the statement says that analides have multiple hearts okay pumping blood in a closed circular system which is correct because in earth form we see multiple hearts in leach also we see multiple heart it made it didn't say that analysts only have multiple hearts so only would have been wrong okay so the first statement okay is correct then it is given that the european earthworm lumbricus terestries is a hermaphrodite okay this option is also correct option second option is also correct because a large portion of anilates are homophrodite all right the third option it has said that all anilates feed on decaying plant material okay this is is also correct okay analides feed on soil decaying matter organic matter okay and also sometime small invertebrates okay so the third option is also correct in the fourth option is said that all anoreles are radially symmetrical now the fourth option is is incorrect because analides are bilaterally symmetrical not radially symmetrical okay now what is radially symmetrical radially symmetrical means that all the organs or similar parts you can say similar parts okay they are organized regularly around central axis but in bilateral symmetry we see that they there are only symmetrical along the sagittal plane...

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