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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
1
Medium
1 of 1
Analyzing
+4 | -1
Assertion: In ctenophores, digestion is chiefly
extracellular.
Reason: Digestive tract is incomplete in
ctenophores.
extracellular.
Reason: Digestive tract is incomplete in
ctenophores.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is correct because digestion in ctenophores is primarily intracellular, and they have a complete digestive tract.
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b) A post anal tail is present in all adult urochordates.
c) In Cephalochordata, notochord is present only in larval tail.
d) Vertebrates have a ventral muscular heart with two, three or four chambers. Read the following organisms given in the below
Tapeworm, Roundworm, Hookworm, Threadworm
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a) In Vertebrata the notochord is replaced by a cartilaginous or bony vertebral column in the adult.
b) A post anal tail is present in all adult urochordates.
c) In Cephalochordata, notochord is present only in larval tail.
d) Vertebrates have a ventral muscular heart with two, three or four chambers. Read the following organisms given in the below
Tapeworm, Roundworm, Hookworm, Threadworm
How many of the above mentioned parasites causes inflammation of the intestinal tract? What is left when bath-sponges dries up?