Structural Organisation in Animals

Class 11

22 previous-year questions from this chapter every option and the correct answer, free · where the marks are

1. Animal tissues

Exam focus: The classic trap is cardiac muscle: it is striated exactly like skeletal muscle, but involuntary, which breaks the shortcut that striated automatically means voluntary. NEET separately swaps tendon (connects muscle to bone) with ligament (connects bone to bone) as the other easily-confused pair in this tissue list.

Animal Tissues (Structural Organisation in Animals)

Vedantu Biotonic for NEET

Epithelial, connective, muscular and neural tissue types with where each shows up in the body — the classification NEET's assertion-reason questions probe.

ZoologyNEET 2024show ▾

Three types of muscles are given as (a), (b) and (c). Identify the correct matching set along with their location in the human body:

A.(a) Skeletal – Triceps; (b) Smooth – Stomach; (c) Cardiac – Heart✓
B.(a) Skeletal – Biceps; (b) Involuntary – Intestine; (c) Smooth – Heart
C.(a) Involuntary – Nose tip; (b) Skeletal – Bone; (c) Cardiac – Heart
D.(a) Smooth – Toes; (b) Skeletal – Legs; (c) Cardiac – Heart

Solution

Skeletal muscle (voluntary) forms the triceps; smooth muscle lines the stomach; cardiac muscle is confined to the heart. The other sets misplace smooth muscle in the heart or skeletal muscle in bone.

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ZoologyNEET 2024show ▾

Match List I with List II.

List I	List II
A. Unicellular glandular epithelium	I. Salivary glands
B. Compound epithelium	II. Pancreas
C. Multicellular glandular epithelium	III. Goblet cells of the alimentary canal
D. Endocrine glandular epithelium	IV. Moist surface of the buccal cavity

Choose the correct answer from the options given below:

A.A-IV, B-III, C-I, D-II
B.A-III, B-IV, C-I, D-II✓
C.A-II, B-I, C-IV, D-III
D.A-II, B-I, C-III, D-IV

Solution

Goblet cells are unicellular glands (III); the moist buccal lining is compound epithelium (IV); salivary glands are multicellular exocrine glands (I); the pancreas contains endocrine glandular epithelium, the islets (II).

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ZoologyNEET 2023show ▾

Given below are two statements: Statement I: Ligaments are dense irregular tissue. Statement II: Cartilage is dense regular tissue. In the light of the above statements, choose the correct answer from the options given below:

A.Both Statement I and Statement II are true
B.Both Statement I and Statement II are false✓
C.Statement I is true but Statement II is false
D.Statement I is false but Statement II is true

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ZoologyNEET 2023show ▾

Match List I with List II.

List I	List II
A. Mast cells	I. Ciliated epithelium
B. Inner surface of bronchiole	II. Areolar connective tissue
C. Blood	III. Cuboidal epithelium
D. Tubular parts of nephron	IV. Specialised connective tissue

Choose the correct answer from the options given below:

A.A-I, B-II, C-IV, D-III
B.A-II, B-III, C-I, D-IV
C.A-II, B-I, C-IV, D-III✓
D.A-III, B-IV, C-II, D-I

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ZoologyNEET 2022show ▾

Which of the following is present between the adjacent bones of the vertebral column?

A.Smooth muscle
B.Intercalated discs
C.Cartilage✓
D.Areolar tissue

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ZoologyNEET 2022show ▾

Match List-I with List-II.

List-I	List-II
(a) Bronchioles	(i) Dense regular connective tissue
(b) Goblet cell	(ii) Loose connective tissue
(c) Tendons	(iii) Glandular tissue
(d) Adipose tissue	(iv) Ciliated epithelium

Choose the correct answer from the options given below:

A.(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
B.(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)✓
C.(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
D.(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

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ZoologyNEET 2022show ▾

Which of the following is not a connective tissue?

A.Neuroglia✓
B.Blood
C.Adipose tissue
D.Cartilage

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ZoologyNEET 2021show ▾

Which of the following statements wrongly represents the nature of smooth muscle?

A.These muscles have no striations
B.They are involuntary muscles
C.Communication among the cells is performed by intercalated discs✓
D.These muscles are present in the wall of blood vessels

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ZoologyNEET 2021show ▾

Identify the types of cell junctions that help to stop the leakage of substances across a tissue and facilitate communication with neighbouring cells via rapid transfer of ions and molecules.

A.Gap junctions and adhering junctions, respectively
B.Tight junctions and gap junctions, respectively✓
C.Adhering junctions and tight junctions, respectively
D.Adhering junctions and gap junctions, respectively

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ZoologyNEET 2020show ▾

Cuboidal epithelium with a brush border of microvilli is found in:

A.The lining of the intestine
B.The ducts of the salivary gland
C.The proximal convoluted tubule of the nephron✓
D.The eustachian tube

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ZoologyNEET 2020show ▾

Goblet cells of the alimentary canal are modified from:

A.Squamous epithelial cells
B.Columnar epithelial cells✓
C.Chondrocytes
D.Compound epithelial cells

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ZoologyNEET 2019show ▾

Identify the cells whose secretion protects the lining of the gastro-intestinal tract from various enzymes.

A.Chief cells
B.Goblet cells✓
C.Oxyntic cells
D.Duodenal cells

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ZoologyNEET 2019show ▾

Ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in:

A.Bile duct and bronchioles
B.Fallopian tubes and pancreatic duct
C.Eustachian tube and salivary duct
D.Bronchioles and Fallopian tubes✓

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2. Frog: morphology and anatomy

Exam focus: A frog breathes through three different surfaces depending on where it is — lungs in air, moist skin (cutaneous respiration) while submerged or hibernating, and the buccal lining — but fertilisation stays external, in water, which is what NEET checks against the male's nuptial pad and vocal sac (mate-attracting features, not internal-fertilisation ones).

Frog: Morphology and Anatomy — Complete Chapter

Arjuna NEET

Dedicated frog chapter video covering habits/habitat, morphology, anatomy, respiration and circulation.

BotanyNEET 2025show ▾

Which of the following statements is correct about the location of the male frog's copulatory pad?

A.First and second digit of the fore limb
B.First digit of the hind limb
C.Second digit of the fore limb
D.First digit of the fore limb✓

Solution

The male frog has a copulatory (nuptial) pad on the first digit of each forelimb, used to grip the female during amplexus.

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ZoologyNEET 2025show ▾

Frogs respire in water by the skin and buccal cavity, and on land by the skin, buccal cavity and lungs. Choose the correct answer from the following:

A.The statement is true for water but false for land
B.The statement is true for both environments
C.The statement is false for water but true for land✓
D.The statement is false for both environments

Solution

In water the frog breathes only through its skin (cutaneous respiration); on land it uses the skin, the buccal cavity and the lungs. So the statement is false for water but true for land.

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ZoologyNEET 2025show ▾

In the frog, the renal portal system is a special venous connection that acts to link:

A.Liver and intestine
B.Liver and kidney
C.Kidney and intestine
D.Kidney and lower part of the body✓

Solution

The frog's renal portal system carries venous blood from the hind limbs and lower body to the kidneys before it returns to the heart.

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BotanyNEET 2025show ▾

What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog?

A.Aorta
B.Pulmonary artery
C.Pulmonary vein
D.Vena cava✓

Solution

The vena cavae (pre-caval and post-caval) bring deoxygenated blood from the body to the sinus venosus and right atrium. Pulmonary veins return oxygenated blood from the lungs; the aorta carries blood away from the heart.

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ZoologyNEET 2024show ▾

Match List I with List II, related to the digestive system of the cockroach.

List I	List II
A. The structure used for storing food	I. Gizzard
B. Ring of 6–8 blind tubules at the junction of foregut and midgut	II. Gastric caeca
C. Ring of 100–150 yellow-coloured thin filaments at the junction of midgut and hindgut	III. Malpighian tubules
D. The structure used for grinding food	IV. Crop

Choose the correct answer from the options given below:

A.A-I, B-II, C-III, D-IV
B.A-IV, B-III, C-II, D-I
C.A-III, B-II, C-IV, D-I
D.A-IV, B-II, C-III, D-I✓

Solution

The crop stores food (IV); the gastric caeca are the 6–8 blind tubules at the foregut–midgut junction (II); the Malpighian tubules are the 100–150 yellow filaments at the midgut–hindgut junction (III); the gizzard grinds food (I).

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ZoologyNEET 2024show ▾

In both sexes of the cockroach, a pair of jointed filamentous structures called anal cerci are present on the:

A.10th segment✓
B.8th and 9th segments
C.11th segment
D.5th segment

Solution

In both sexes of the cockroach a pair of jointed anal cerci arises from the 10th abdominal segment; anal styles (males only) are on the 9th.

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ZoologyNEET 2023show ▾

Which of the following is a characteristic feature of the cockroach regarding sexual dimorphism?

A.Dark brown body colour and anal cerci
B.Presence of anal styles✓
C.Presence of sclerites
D.Presence of anal cerci

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ZoologyNEET 2023show ▾

In the cockroach, excretion is brought about by: A. Phallic gland · B. Urecose gland · C. Nephrocytes · D. Fat body · E. Collaterial glands Choose the correct answer from the options given below:

A.A and E only
B.A, B and E only
C.B, C and D only✓
D.B and D only

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ZoologyNEET 2019show ▾

Select the correct sequence of organs in the alimentary canal of a cockroach, starting from the mouth:

A.Pharynx $\to$ oesophagus $\to$ crop $\to$ gizzard $\to$ ileum $\to$ colon $\to$ rectum✓
B.Pharynx $\to$ oesophagus $\to$ gizzard $\to$ crop $\to$ ileum $\to$ colon $\to$ rectum
C.Pharynx $\to$ oesophagus $\to$ gizzard $\to$ ileum $\to$ crop $\to$ colon $\to$ rectum
D.Pharynx $\to$ oesophagus $\to$ ileum $\to$ crop $\to$ gizzard $\to$ colon $\to$ rectum

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