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NEET • BIOLOGY • STRUCTURAL ORGANISATION IN ANIMALS
Structural organisation in animals practice · Mixed difficulty
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Showing 1-30 of 307 questions
1
Medium
1 of 307
Remembering
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Simple epithelium is a tissue in which the cells are
View answer and explanation
Correct option: B
Cemented directly to one another to form a single layer
Option B (Cemented directly to one another to form a single layer) is correct because simple epithelium is characterized by a single layer of cells tightly connected.
2
Medium
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Remembering
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In addition to the Malpighian tubules, excretion of the waste products in cockroach occurs by
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because, in addition to Malpighian tubules, fat bodies, nephrocytes, and uricose glands also contribute to excretion in cockroaches.
3
Easy
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Understanding
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epithelium is involved in secretion and absorption and is found in :-
View answer and explanation
Correct option: C
A-Columnar, B-lining of intestine
Option C (A-Columnar, B-lining of intestine) is correct because columnar epithelium is specialized for secretion and absorption and is found lining the intestine.
4
Easy
4 of 307
Understanding
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Read the following 4-statements (i – iv) and accordingly mark the option that has both correct statements.
i) Cardiac fibres are branched with one or more nuclei.
ii) Smooth muscles are unbranched and cylindrical.
iii) Striated muscles can be branched or unbranched.
iv) Involuntary muscles are non-striated.
i) Cardiac fibres are branched with one or more nuclei.
ii) Smooth muscles are unbranched and cylindrical.
iii) Striated muscles can be branched or unbranched.
iv) Involuntary muscles are non-striated.
View answer and explanation
Correct option: D
(i) and (iii)
Option D ((i) and (iii)) is correct because cardiac fibers are branched with one or more nuclei, and striated muscles can be branched or unbranched.
5
Medium
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Remembering
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The ciliated columnar epithelial cells in humans are known to occur in
View answer and explanation
Correct option: A
Bronchioles and fallopian tubes
Option A (Bronchioles and fallopian tubes) is correct because ciliated columnar epithelium is found in these locations to move mucus and ova, respectively.
6
Hard
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Remembering
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The outermost wall of spermatophore of cockroach is composed of the secretions of
View answer and explanation
Correct option: B
Conglobate gland
Option B (Conglobate gland) is correct because the outermost wall of the cockroach spermatophore is formed by secretions from the conglobate gland.
7
Easy
7 of 307
Understanding
+4 | -1
In water, the skin of the frog performs the function of
View answer and explanation
Correct option: C
Diffusion
Option C (Diffusion) is correct because the frog's skin allows for the exchange of gases (oxygen and carbon dioxide) through diffusion in water.
8
Easy
8 of 307
Understanding
+4 | -1
Choose the incorrect pair from the matches given below
View answer and explanation
Correct option: D
Crop – Grinding food
Option D (Crop – Grinding food) is correct because the crop is for storing food, while the gizzard (proventriculus) is responsible for grinding food.
9
Easy
9 of 307
Analyzing
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Read the following statements and find out the incorrect statement
View answer and explanation
Correct option: D
None of the above
Option D (None of the above) is correct because all the statements are correct regarding cockroaches.
10
Hard
10 of 307
Understanding
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The white adipose tissue appears opaque due to
View answer and explanation
Correct option: C
large number of adipocytes
Option C (large number of adipocytes) is correct because the opacity of white adipose tissue is due to the high concentration of fat-filled adipocytes.
11
Medium
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Understanding
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Find out the wrongly matched pair.
View answer and explanation
Correct option: B
Columnar epithelium - Peritoneum of body cavity
Columnar epithelium is typically found lining the stomach and intestines, not the peritoneum of the body cavity, which is lined by simple squamous epithelium.
12
Medium
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Analyzing
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Assertion: Materials cannot be exchanged
between epithelial cells.
Reason: Blood vessels are present in epithelial
tissue.
between epithelial cells.
Reason: Blood vessels are present in epithelial
tissue.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is correct because materials can be exchanged between epithelial cells, and blood vessels are not present in epithelial tissue.
13
Hard
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Analyzing
+4 | -1
Consider the following statements about respiratory system of frog
I. Skin acts as a respiratory organ in water as well as on land
II. Dissolved oxygen is exchanged through the skin by the process of diffusion in water
III. Lungs are paired and present in thorax
IV. Gaseous exchange takes place through the skin during hibernation and aestivation
Which of the statements given above is are incorrect?
I. Skin acts as a respiratory organ in water as well as on land
II. Dissolved oxygen is exchanged through the skin by the process of diffusion in water
III. Lungs are paired and present in thorax
IV. Gaseous exchange takes place through the skin during hibernation and aestivation
Which of the statements given above is are incorrect?
View answer and explanation
Correct option: A
Only I
Option A (Only I) is correct because the skin of a frog acts as a respiratory organ in water, but not primarily on land.
14
Hard
14 of 307
Remembering
+4 | -1
Achondroplasia is a disease related with the defect in the formation of
View answer and explanation
Correct option: B
cartilage
Option B (cartilage) is correct because achondroplasia is a genetic disorder that primarily affects cartilage formation, leading to impaired bone growth and dwarfism.
15
Medium
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Understanding
+4 | -1
Select the correct statements from the following.
A. Microvilli are present in the cells of simple cuboidal and columnar epithelia
B. Ciliated epithelium is present lining the inner surface of hollow organs like bronchioles.
C. Compound epithelia are found only as covering of organs like skin and protective in function.
D. Glandular epithelium consists of specialized squamous cells for secretion
A. Microvilli are present in the cells of simple cuboidal and columnar epithelia
B. Ciliated epithelium is present lining the inner surface of hollow organs like bronchioles.
C. Compound epithelia are found only as covering of organs like skin and protective in function.
D. Glandular epithelium consists of specialized squamous cells for secretion
View answer and explanation
Correct option: A
A & B
Option A is correct because microvilli are found in simple cuboidal and columnar epithelia, and ciliated epithelium lines bronchioles.
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16
Medium
16 of 307
Understanding
+4 | -1
Heart is formed by specific proportion and pattern of these tissues.
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because the heart is composed of epithelium, connective tissue, and muscular and neural tissue working together.
17
Medium
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Understanding
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A: Muscle fibers are said to be contractile in nature.
R: Cells of muscle tissues can shorten forcefully and again return to the relaxed state.
R: Cells of muscle tissues can shorten forcefully and again return to the relaxed state.
View answer and explanation
Correct option: A
Both assertion and reason are true and reason is the correct explanation of assertion
Option A (Both assertion and reason are true and reason is the correct explanation of assertion) is correct because the ability of muscle fibers to contract and relax is the fundamental basis of their contractile nature.
18
Hard
18 of 307
Remembering
+4 | -1
Which structure is not related to respiration in frog?
View answer and explanation
Correct option: A
Diaphragm
Option A (Diaphragm) is correct because frogs lack a diaphragm; they use buccal cavity, skin, and lungs for respiration.
19
Easy
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Understanding
+4 | -1
Adipose tissue is similar to areolar tissue in all of the following, except
View answer and explanation
Correct option: D
Storage of fat as main function
Option D (Storage of fat as main function) is correct because while both are connective tissues, adipose tissue's primary function is fat storage, unlike areolar tissue.
20
Easy
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Remembering
+4 | -1
Mast cells are associated with
View answer and explanation
Correct option: C
Areolar connective tissue
Option C (Areolar connective tissue) is correct because mast cells are found within areolar connective tissue and play a role in inflammation and allergic reactions.
21
Hard
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Understanding
+4 | -1
Read the following statements
(a) Heart consist of all the four types of tissues i.e epithelial, connective, muscular and neural
(b) Each organ in our body is made of one or more types of tissues
(c) Bones have a hard and non-pliable ground substance
(d) Gap junctions allow rapid transfer of ions, small molecules and sometimes big molecules
How many statement(s) are incorrect?
(a) Heart consist of all the four types of tissues i.e epithelial, connective, muscular and neural
(b) Each organ in our body is made of one or more types of tissues
(c) Bones have a hard and non-pliable ground substance
(d) Gap junctions allow rapid transfer of ions, small molecules and sometimes big molecules
How many statement(s) are incorrect?
View answer and explanation
Correct option: A
Zero
Option A (Zero) is correct because all the statements are factually correct regarding tissue types and their characteristics in multicellular animals.
22
Medium
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Analyzing
+4 | -1
Select the odd one w.r.t. location of non-striated muscles.
View answer and explanation
Correct option: B
Wall of heart
Option B (Wall of heart) is the odd one out because the heart wall contains cardiac muscle, which is striated, while the others contain non-striated (smooth) muscle.
23
Medium
23 of 307
Understanding
+4 | -1
One very special feature in the earthworm Pheretima is that
View answer and explanation
Correct option: A
The typhlosole greatly increases the effective absorption area of the digested food in the intestine
Option A (The typhlosole greatly increases the effective absorption area of the digested food in the intestine) is correct because the typhlosole's primary function is to increase the surface area for absorption in the intestine.
24
Easy
24 of 307
Remembering
+4 | -1
Which of the following epithelium is composed of single layer of tall and slender cells?
View answer and explanation
Correct option: B
Columnar epithelium
Option B (Columnar epithelium) is correct because columnar epithelium consists of tall and slender cells.
25
Medium
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Understanding
+4 | -1
A: Adipose tissues are specialised to store fats.
R: Adipocytes are specialised cells for storage of fats present in adipose tissue.
R: Adipocytes are specialised cells for storage of fats present in adipose tissue.
View answer and explanation
Correct option: A
Both assertion and reason are true and reason is the correct explanation of assertion
Option A (Both assertion and reason are true and reason is the correct explanation of assertion) is correct because the presence of adipocytes specialized for fat storage is the reason why adipose tissue is specialized for fat storage.
26
Medium
26 of 307
Remembering
+4 | -1
Germinal epithelium is composed of
View answer and explanation
Correct option: A
Cuboidal epithelium
Option A (Cuboidal epithelium) is correct because germinal epithelium, which produces gametes in the gonads, is composed of cuboidal epithelial cells.
27
Hard
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Understanding
+4 | -1
Statement I: During copulation, two earth worms mutually exchange spermatophores:
Statement II: Sperms are temporarily stored in the spermathecae
Statement II: Sperms are temporarily stored in the spermathecae
View answer and explanation
Correct option: A
Both statement I and II are correct
Option A (Both statement I and II are correct) is correct because earthworms mutually exchange spermatophores during copulation, and sperms are temporarily stored in the spermathecae.
28
Medium
28 of 307
Remembering
+4 | -1
In earthworm, pharyngeal nephridia are present as three paired tufts in the segments
View answer and explanation
Correct option: B
4th, 5th and 6th
Option B (4th, 5th and 6th) is correct because pharyngeal nephridia in earthworms are present as three paired tufts in the 4th, 5th, and 6th segments.
29
Medium
29 of 307
Remembering
+4 | -1
Which of the following part of the cockroach helps in the removal of excretory products from the haemolymph?
View answer and explanation
Correct option: B
Malpighian tubule
Option B (Malpighian tubule) is correct because Malpighian tubules are the primary organs responsible for removing excretory products from the hemolymph in cockroaches.
30
Hard
30 of 307
Understanding
+4 | -1
Which of the following statements is false about
the glands?
the glands?
View answer and explanation
Correct option: D
Endocrine glands secrete a variety of
enzymes only.
enzymes only.
Option D (Endocrine glands secrete a variety of enzymes only) is correct because endocrine glands secrete hormones, not just enzymes.
Revision notes and key takeaways
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Key Takeaways
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