Biology

Animal Kingdom

Subphylum I. Urochordata

Assertion: Respiration in Amphioxus is done by both water and

Question

Hard

Solving time: 4 mins

Assertion: Respiration in Amphioxus is done by both water and blood.
Reason: Amphioxus is aquatic and possesses blood.

If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

If Assertion is true but Reason is false.

If both Assertion and Reason are false.

Views: 5,594 students

Book:

NEET Question Bank i Biology for AIIMS (Disha)

Found 6 tutors discussing this question

Alexander Discussed

Assertion: Respiration in Amphioxus is done by both water and blood.
Reason: Amphioxus is aquatic and possesses blood.

13 mins ago

Discuss this question LIVE

13 mins ago

Text solutionVerified

In Amphioxus, some exchange of O

_{2}

and CO

_{2}

occurs between the water current and blood through the gill-clefts, but this appears doubtful since the blood contains no respiratory pigment. The pharyngeal wall of Branchiostoma is richly vascular and the water current entering the pharyngeal cavity brings O

_{2}

. The blood flows so close to the surface that some exchange between blood and water can easily occur. It appears more probable that an exchange of gases occurs over the whole surface of the body and particularly in the walls of atrium.

Was this solution helpful?

119

Report

One destination for complete JEE/NEET preparation

One destination to cover all your homework and assignment needs

Learn Practice Revision Succeed

Instant 1:1 help, 24x7

60, 000+ Expert tutors

Textbook solutions

Big idea maths, McGraw-Hill Education etc

Essay review

Get expert feedback on your essay

Schedule classes

High dosage tutoring from Dedicated 3 experts

Trusted by 4 million+ students

Stuck on the question or explanation?

Connect with our Biology tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Question Text	Assertion: Respiration in Amphioxus is done by both water and blood. Reason: Amphioxus is aquatic and possesses blood.
Topic	Animal Kingdom
Subject	Biology
Class	Class 11
Answer Type	Text solution:1
Upvotes	119

Assertion: Respiration in Amphioxus is done by both water and blood.
Reason: Amphioxus is aquatic and possesses blood.

Text solutionVerified

Practice questions from NEET Question Bank i Biology for AIIMS (Disha)

Practice more questions from Animal Kingdom

Practice questions on similar concepts asked by Filo students

Assertion: Respiration in Amphioxus is done by both water and blood. Reason: Amphioxus is aquatic and possesses blood.

Text solutionVerified

Practice questions from NEET Question Bank i Biology for AIIMS (Disha)

Practice more questions from Animal Kingdom

Practice questions on similar concepts asked by Filo students

Related books for questions on Animal Kingdom

Assertion: Respiration in Amphioxus is done by both water and blood.
Reason: Amphioxus is aquatic and possesses blood.