Excretion : Biology MCQ Practice Questions & Answers (Sanskrit) - Page 2

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21.

Part of nephron involved in active reabsorption of sodium is

A

Ascending limb of Henles loop

B

Bowmans capsule

C

DCT

D

PCT

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22.

Nitrogenous waste in the Malpighian tubule flows into

A

Intestine

B

Haemocoel

C

DCT

D

PCT

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23.

Which hormone induced the process of reabsorption from glomerouous?

A

Vasopression

B

Relkgin

C

Calsitonin

D

Oxytosin

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24.

Animals which cannot maintain thier osmotic environment at a constant level are called

A

Oamoconfirmers

B

Pokilotherms

C

Homeotherms

D

Osmoregulators

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25.

The Organism which maintain an independent concentration of their extracellular fluids

A

Osmoregulators

B

a & b both

C

None of above

D

Osmoconfirmers

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26.

The kidney of adult mammals are

A

pronephros

B

Mesonephros

C

rletanaphros

D

Opisthonephron

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27.

Which of the following is a metabolic waste of nitrogenous substances?

A

$NH_3$ , aranine, urea

B

Urea, $NH_3$ , creatinine

C

Urea, oxugen, $SO_2$

D

$NH_3$ , urea, $CO_2$

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28.

Which of the following is both osmoregulator as well as nitrogenours product

A

Urea

B

Uric acid

C

All of these

D

$NH_3$

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29.

RAAS secretes which of the following hormones?

A

glucoticoids

B

Both A and B

C

None of these

D

Mineralocorticoids

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30.

What will happen if the stretch receptor of the urinary bladder wall are totally removed ?

A

Urine will continue to collect normally in the bladder

B

These will be no nicturition

C

Urine will not collect in the bladder

D

Micturition will continue

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31.

For maintanance of osmoregulation by animals where urea is sored?

A

Cortex of Kidney

B

Renal of pelvis

C

Renal artery

D

Medulla of Kidney

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32.

It is activated us he change of blood volume and volume of body fluid

A

Medulla oblongata

B

Osmoreceptor

C

Aorta

D

Renal vein

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33.

Columns of Bertini" is the kidney of manimals are found as the extersion of

A

Medulla into cortex

B

Cortex into medulla

C

Medulla into pelvis

D

Pelvis into ureter

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34.

The glomenuli are continued to the

A

Medulla

B

Calyces

C

Cortex

D

REnal Pelvis

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35.

Ureotelism is found in

A

Mammals

B

Aquatic insects

C

Tadpoles

D

Birds

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36.

Excretory structure of earthworms is

A

Malpighian tubules

B

Nephridia

C

Kidney

D

Anternal glands

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37.

Excertory organs of cockroach are

A

Malpighian corpucles

B

Malpighian tubules

C

Hepetic caecae

D

Green glands

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38.

Sodium water and phosphate reabsorption is maximum in

A

Loop of henle

B

PCT

C

DCT

D

Collecting tuble

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39.

In cortical nephrones LOH = Loop of henle

A

LOH is long

B

coloecting tubule is short

C

LOH is sort

D

Absesnce of LOH

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40.

which one is an accessory excretory organ?

A

Liver

B

Stomach

C

intertine

D

Heart

Excretion in Biology : Practice MCQ Questions & Answers with Explanations