NEET Biology Mock Test: Excretion and Movement

Assess Your Excretion and Movement Knowledge with this NEET Biology Mock Test

This free NEET Biology mock test delves into the essential concepts of excretory processes and types of movement in organisms. Test your understanding of kidney function, muscle contraction, skeletal systems, and more. This practice exam mirrors the format and difficulty of the official NEET, providing valuable preparation for aspiring medical professionals.

This mock test features questions directly inspired by those found in previous years’ NEET and other national-level exams. It comprehensively covers all essential topics from both chapters. Simply access this free resource, put your knowledge to the test, and evaluate your current understanding.

Take this test to:

Identify areas where you need further study
Practice with NEET-style questions on these foundational topics
Boost your confidence and preparation for the NEET Biology exam

Begin the test now and take a step closer to NEET success!

Free NEET Biology Practice Test: Master Excretion & Movement

General Instructions

Your test contains multiple-choice questions with only one answer type questions. There are a total of 40 questions
This is a 40 min test. Please make sure you complete it in stipulated time
You can finish this test any time using the 'Submit' button.

Page 1 of 8

1. Following are the statements given about the counter current system of human nephrons. Select the incorrect one.

Flow of filtrate in two tubes of Henle's loop occurring in opposite directions have counter-current pattern.

The flow of blood in two limbs of vasa recta also occurs in a counter-current pattern.

Flow of filtrate and blood in Henle's loop and vasa recta respectively occur in counter-current pattern.

The counter-current mechanism maintains decreasing osmolarity from outer medullary interstitium.

2. ANF mechanism checks on

oxytocin – renin mechanism

counter – current mechanism

renin – angiotensin mechanism

oxytocin – angiotensin mechanism

3. Read the following statements and select the correct option

Statement I: The amount of the filtrate formed by the kidneys per minute is called glomerular filtration rate (GFR).

Statement ll: GFR in a healthy individual is approximately 125 ml/minute.

Both statements I and Il are correct.

Statement l is correct but statement ll is incorrect.

Statement I is incorrect but statement Il is correct

Both statements I and Il are incorrect.

4. Match the following columns.

(a)

(b)

(c)

(d)

5. Identify the correct statements and choose the correct option.
(i) Blood vessel leading to the glomerulus is called efferent arteriole.
(ii) Vasa recta, peritubular capillaries, and glomerulus, all have blood.
(iii) Vasa recta runs parallel to the Henle's loop in the juxta-medullary nephron.
(iv) Cortical nephrons have highly reduced vasa recta.

(i), (ii) and (iii)

(i), (ii) and (iv)

(i), (iii) and (iv)

(ii), (iii) and (iv)

Page 2 of 8

6. Which one of the following is showing the correct sequential order of vertebrae in the vertebral column of human beings?

Cervical – lumbar – thoracic – sacral – coccygeal

Cervical – thoracic – sacral – lumbar – coccygeal

Cervical – sacral – thoracic – lumbar – coccygeal

Cervical – thoracic – lumbar – sacral – coccygeal

7. A person is suffering from an age-related disorder "X". "X" is characterized by decreased bone mass and increased chances of fractures. identify "X" and its common cause.

Tetany, increased levels of estrogen.

Osteoporosis, decreased levels of estrogen.

Myasthenia gravis, decreased levels of estrogen.

Muscular dystrophy. increased levels of estrogen.

8. During muscle contraction, ATP provides energy for

activation of sarcomere

building up action potential

releasing $Ca^{2+}$ from sarcoplasmic reticulum

cross-bridge attachment of myosin to actin.

9. Match the column I with column Il and select the correct option.

(a)

(b)

(c)

(d)

10. Scapula is a triangular bone situated in

dorsal part of thorax between 2nd and 7th ribs

ventral part of thorax between 2nd and 7th ribs

medial part of thorax between 2nd and 7th ribs

ventral part of thorax between 11th and 12th ribs.

Page 3 of 8

11. Acetabulum is a cavity formed at the fusion of

ilium and incus

ilium, ischium and clavicle

pubis and ischium

pubis, ischium and ilium

12. How many pairs of ribs are attached directly to sternum?

First seven pairs

All twelve ribs

First ten pairs

First five pairs

13. What is a sarcomere?

Portion between two H-line

Portion between two A-line

Portion between two I-band

Portion between two Z-lines

14. Which of the given ions are conditionally reabsorbed and secreted respectively in PCT?
I. $Na^+$
II. $H_2O$
III. $HCO^{3-}$
IV. $H^+$
V. $K^+$
VI. $NH_3$

I, II and III; IV, V and VI

IV, V and VI; I, II and III

I, II and V; III, IV and VI

III, IV, and VI; I, II and V

15. Calcium is important in skeletal muscle contraction because it

binds to troponin to remove the masking of active sites on actin for myosin

activates the myosin ATPase by binding to it

detaches the myosin head from the actin filament

prevents the formation of bonds between the myosin cross bridges and the actin filament.

Page 4 of 8

16. Dialysis unit (artificial kidney) contains a fluid which is almost same as plasma except that it has

high glucose

high urea

no urea

high protein.

17. Match column I with column II and select the correct option.

A-(i), B-(ii), C-(iii), D-(iv), E-(v)

A-(iv), B-(v), C-(i), D-(iii), E-(ii)

A-(iv), B-(v), C-(ii), D-(iii), E-(i)

A-(ii), B-(iii), C-(i), D-(v), E-(iv)

18. Knee joint is an example of

pivot joint

hinge joint

gliding joint

ball and socket joint

19. Refer to the given figure of nephron and select the correct option.

A-Glomerulus -a tuft of capillaries formed by afferent arteriole.

B-PCT-reabsorption of $HCO^{-}_{3}$ and selective secretion of $H^+$ and $K^+$ occurs here.

C-DCT-almost all glucose, amino acids, water, $Na^+$, $K^+$ and uric acid are absorbed here.

D-Colecting duct-extends from the cortex of the kidney to the inner parts of medulla. Larqe amount of water is secreted in this region.

20. Relaxation of the muscle takes place due to
I. pumping of Ca2+ ions back in sarcoplasmic reticulum
II. shortage of ATP
III. conformational changes in troponin and masking the actin filament.

I and III

I and II

II and III

I, II and III

Page 5 of 8

21. Antennal glands are also known as A glands. These are excretory structures found in crustaceans like B.

(a)

(b)

(c)

(d)

22. The counter-current mechanism operates in a nephron

in ascending and descending limb of vasa recta only

in ascending limb of Henle's loop only

in descending limb of Henle's loop only

between the loop of Henle and vasa recta

23. Read the following statements and fill the gaps correctly of any two statements.
I. Most of nephrons in human kidneys are _1_.
II. Efferent arterioles divide and form network of capillaries called _2_.
III. A 'U' shaped capillary form loop around loop of Henle called _3_ which is absent in _4_.

1-juxtamedullary, 3- vasa recta

1-cortical nephrons, 3-peritubular capillaries

1-cortical nephrons, 2-vasa recta

2-peritubular capillaries, 4-cortical nephrons

24. Muscle contraction is triggered

when high levels of oxygen and sugar are released by the sarcolemma

when a surplus of ATP is released by a nerve-motor unit

by release of a neurotransmitter at a nerve-muscle synapse that directly causes actin and myosin to slide

by the nerve releasing a neurotransmitter, which triggers a flow of calcium that attaches to actin filaments and exposes the myosin binding sites.

25. Which of the following statements regarding movement and locomotion is incorrect?

All movements are locomotion, but all locomotion are not movements.

Methods of locomotion vary with the habitat of an animal.

In Paramecium, cilia help in the movement of food through cytopharynx.

Streaming of protoplasm in Amoeba is a type of an amoeboid movement.

Page 6 of 8

26. Choose the correct order of urine formation in human.
Hint: PCT (Proximal convoluted tubule), ALH (Ascending loop of Henle), DLH (Descending loop of Henle), DCT (Distal convoluted tubule) and CD (Collecting duct).

PCT → ALH → DLH → DCT → CD

ALH → DLH → PCT → DCT → CD

PCT → DLH → ALH → DCT → CD

CD → DCT → ALH → DLH → PCT

27. Read the given statements and select the correct option.

Statement I: Bone has very hard matrix whereas cartilage has pliable matrix.

Statement Il: Bone has calcium salts whereas cartilage has chondroitin salts in its matrix.

Both statements I and Il are correct

Statement I is incorrect but statement Il is correct.

Statement l is correct but statement ll is incorrect.

Both statements I and Il are incorrect

28. Which of the following are components of the dialysing unit used to carry out haemodialysis in uremic patients?
I. Urea
II. Heparin
III. Anti-heparin
IV. Coiled cellophane tube
V. Dialysing fluid

I, II, III and IV

II, III, IV and V

I, III, IV and V

I, IV, and V

29. Identify A, B and C in the given diagram. Choose the correct option.

A-Actin filament, B-Myosin filament, C-ATP

A-Myosin filament, B-Actin filament, C-ADP

A-Myosin filament, B-Actin filament, C-GTP

A-Actin filament, B-G-actin filament, C-Pi

30. Identify the name of the enzyme which is released from JG cells in response to low GFR and produces a powerful vasoconstrictor.

Renin

Vasopressin

Lipase

Salivary amylase

Page 7 of 8

31. Find the correct statement about 'A' band of skeletal muscle. 'A' band contains

only thick filaments but no thin filaments

thick filaments with thin filaments in the centre

thick filament with overlapping thin filaments on both sides

the filaments between two Z lines

32. Due to insufficient filtration in the Bowman's capsule, all are likely to happen, except

accumulation of fluid in the body

increase in blood pressure

increase in blood urea level

loss of glucose through urine

33. Read the given statements regarding human excretory system and select the correct option.
(i) Presence of glucose in urine is known as uremia.
(ii) Angiotensin II activates adrenal cortex to release aldosterone.
(iii) JGA is formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at the location of their contact.
(iv) Atrial natriuretic factor (ANF) cause vasoconstriction when blood flow is low to the atria of the heart.

(i) and (ii)

(i) and (iii)

(ii) and (iii)

(iii) and (iv)

34. Pelvic girdle consists of two coxal bones. Each coxal bone is formed by

ilium, ischium, and pubis

ilium, ischium, and tibia

tibia, scapula, and clavicle

ilium, tibia, and scapula

35. Read the given statements and select the correct option.

Statement I: Mechanism of muscle contraction is explained by sliding-filament theory.

Statement II: Contraction of muscle fibre takes place by the sliding of thick filaments over the thin filaments.

Both statements I and II are correct.

Statement I is incorrect but statement II is correct.

Both statements I and II are incorrect.

Statement I is correct but statement II is incorrect.

Page 8 of 8

36. Which statements are correct regarding the skeletal muscles?
A. Their activities are under the voluntary control of the nervous system.
B. They are located in the inner walls of visceral organs.
C. They are primarily involved in locomotory actions and changes of body postures.
D. They have unstriped appearance.

B and D

B and C

A and D

A and C

37. Read the given statements and select the correct option.
Statement I: The final reabsorption of water from the urine into the blood occurs through the collecting duct of a mammalian nephron resulting in the production of concentrated urine.
Statement II: The loop of Henle plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid.

Both statements I and II are correct.

Both statements I and II are incorrect.

Statement I is correct but statement II is incorrect.

Statement I is incorrect but statement II is correct.

38. Renal calculi are

insoluble mass of crystallised salts in kidney

soluble mass of protein in kidney

insoluble mass of proteins in kidney

insoluble mass of crystallised salts in kidney

39. Micturition is

removal of urea from blood

removal of uric acid

act of passing out urine

removal of fats.

40. Number of tarsals, metatarsals and phalanges in each hindlimb of human skeleton are respectively

7, 5 and 14

8, 5 and 14

6, 5 and 14

5, 6 and 7

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