11th Standard Syllabus & Materials

11th Standard

TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A

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11th Standard

TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A

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11th Standard

TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A

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11th Standard

TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A

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11th Standard

TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A

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11th Standard

TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A

11th Standard English Medium Biology (Zoology) Subject Neural Control and Coordination Book Back 2 Mark Questions with Solution

Published on: 08/06/2021

QB365 provides detailed and simple solution for every book back questions in class 11 Biology subject.It will helps to get more idea about question pattern in every book back questions with solution.

Download Tamil Nadu 11th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 11th Standard - Biology

chapter: - Book back Questions

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Questions:

Generic 2

5 x 2 = 10

Name the meninges.

Cornea transplant in humans is almost never rejected. State the reason.

The action potential occurs in response to a threshold stimulus; but not at subthreshold stimuli. What is the name of the principle involved?

Why are we getting running nose while crying?

Why is the blind spot called so?

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Answers Key:

Generic 2

5 x 2 = 10

1. Dura mater
2. Arachnoid
3. Pia mater

(i) The cornea is the only tissue in the body that can be transplanted from one person to another with little or no possibility of rejection.
(ii) This is because cornea does not have blood vessels.

The action potential occurs in response to a threshold stimulus but does not occur at sub threshold stimuli. This is called all or none principle.

1. When we cry, tears are secreted by lacrymal gland under the eyelids and drain through the tear ducts which empty into the nose.
2. Tears mix with ntucus and we have a running nose.

The optic nerves and the retinal blood vessels enter the eye slightly below the posterior pole, which is devoid of photo receptors, hence this region is called blind spot.