11th Standard Syllabus & Materials

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

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

11th Standard English Medium Biology (Zoology) Subject Excretion Book Back 5 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 5

2 x 5 = 10

Identify the following structures and explain their significance in renal physiology?
(a) Juxtaglomerular apparatus
(b) Podocytes
(c) Sphincters in the bladder

Arrange the following structures in the order that a drop of water entering the nephron would encounter them
e. Afferent arteriole
f. Bowman’s capsule
g. Collecting duct
h. Distal tubule
i. Glomerulus
j. Loop of Henle
k. Proximal tubule
l. Renal pelvis

Generic 2

3 x 2 = 6

What is tubular secretion? Name the substances secreted through the renal tubules.

With regards to toxicity and the need for dilution in water, how different are ureotelic and uricotelic excretions? Give examples of animals that use these types of excretion.

How are the kidneys involved in controlling blood volume? How is the volume of blood in the body related to arterial pressure?

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Answers Key:

Generic 5

2 x 5 = 10

(a) Some nephrons, have very long loop of Henle that run deep into the medulla are called juxtamedullary nephrons which aid in filtration from glomerulus.
(b) Podocytes are the filtration slits.
(c) Sphincters of urinary bladder are internal paired (involuntary) and external paired (Voluntary) control micturition.

(e) Afferent arteriole
(i) Glomerulus
(f) Bowman's capsule
(k) Proximal tubule
(j) Loop of Henle
(h) Distal tubule
(g) Collecting duct
(l) Renal pelvis

Generic 2

3 x 2 = 6

Occurs in distal convoluted tubule of nephron potassium is excreted and sodium is absorbed.

(i) Urea is excreted by ureotelic animals
Eg: Earthworm, Frogs and mammals.
(ii) Uric acid is excreted by uricotelic animals
Eg: Insects, reptiles and Aves (birds).

(i) Nephrons of kidneys absorb and reabsorb blood plasma (55%) and handover it to venules of renal vein so that an average blood volume is maintained.
(ii) Oxygenated blood flows in the arterial system expresses the systolic pressure (120mm Hg) to balance the normal blood pressure towards the body organs.