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NEET • BIOLOGY • STRUCTURAL ORGANISATION IN ANIMALS
Structural organisation in animals practice · Easy
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Showing 31-60 of 107 questions
31
Easy
31 of 107
Understanding
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Choose the correct statement about a muscular
tissue:
tissue:
View answer and explanation
Correct option: C
Intercalated discs allow the cardiac muscle
cells to contract as a unit
cells to contract as a unit
Option C (Intercalated discs allow the cardiac muscle cells to contract as a unit) is correct because intercalated discs are specialized structures in cardiac muscle that facilitate coordinated contraction.
32
Easy
32 of 107
Understanding
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Which statement is correct about simple cuboidal epithelium?
View answer and explanation
Correct option: D
All of the above
All the statements about simple cuboidal epithelium are correct: it's a single layer of cube-like cells, found in gland ducts, and its main function is secretion and absorption.
33
Easy
33 of 107
Understanding
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Cockroaches are placed in the phylum-Arthropooda because
View answer and explanation
Correct option: D
Jointed appendages
Option D (Jointed appendages) is correct because the defining characteristic of Arthropoda is the presence of jointed appendages.
34
Easy
34 of 107
Remembering
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In human body neuroglia cells occurs in the
View answer and explanation
Correct option: D
Brain and spinal cord
Option D (Brain and spinal cord) is correct because neuroglia cells are the supporting cells of the nervous system and are found in both the brain and spinal cord.
35
Easy
35 of 107
Understanding
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The alimentary canal of frog is short because frogs are
View answer and explanation
Correct option: B
Carnivores
Option B (Carnivores) is correct because frogs are carnivores, and carnivores generally have shorter alimentary canals compared to herbivores because meat is easier to digest than plant matter.
36
Easy
36 of 107
Remembering
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On the basis of structures and functions animal tissues are classified into
View answer and explanation
Correct option: D
4 types
Option D (4 types) is correct because animal tissues are classified into four main types: epithelial, connective, muscular, and nervous.
37
Easy
37 of 107
Understanding
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Type of epithelium that has limited role in secretion and absorption
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Correct option: B
Compound Epithelium
Compound epithelium has a limited role in secretion and absorption because it is primarily for protection.
38
Easy
38 of 107
Understanding
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Sensory neurons and motor neurons are inter connected in CNS by
View answer and explanation
Correct option: C
Interneurons
Option C (Interneurons) is correct because interneurons are located within the CNS and connect sensory and motor neurons, facilitating communication and integration.
39
Easy
39 of 107
Remembering
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In earthworm, the characteristic internal median fold of dorsal wall of the intestine called typhlosole is present in
View answer and explanation
Correct option: C
26 to 35 segments
Option D (15 to last segment) is incorrect. The typhlosole, an internal median fold of the dorsal wall of the intestine in earthworms, is typically found in the 26th to 35th segments, increasing the surface area for absorption.
40
Easy
40 of 107
Remembering
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Muscle tissue with intercalated disc is
View answer and explanation
Correct option: C
Cardiac
Option C (Cardiac) is correct because cardiac muscle tissue is characterized by the presence of intercalated discs, which are specialized junctions between cells.
41
Easy
41 of 107
Remembering
+4 | -1
Blood is a kind of
View answer and explanation
Correct option: C
Fluid connective tissue
Option C (Fluid connective tissue) is correct because blood is a specialized connective tissue with a fluid matrix called plasma.
42
Easy
42 of 107
Remembering
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Which of the following branch of science deals with the study of externally visible features?
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Correct option: B
Morphology
Option B (Morphology) is correct because morphology deals with the study of externally visible features of organisms.
43
Easy
43 of 107
Remembering
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In male frog, ureters act as
View answer and explanation
Correct option: A
Urinogenital ducts
Option A (Urinogenital ducts) is correct because in male frogs, the ureters carry both urine and sperm, thus functioning as urinogenital ducts.
44
Easy
44 of 107
Understanding
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Place these structures
A. Fascicle B. Myofilament C. Muscle fiber (Cell) D. Myofibril E. Sarcomere
A. Fascicle B. Myofilament C. Muscle fiber (Cell) D. Myofibril E. Sarcomere
View answer and explanation
Correct option: A
A, C, D, E, B
Option A (A, C, D, E, B) is correct because it represents the correct order of muscle structure from largest to smallest: Fascicle, Muscle fiber (Cell), Myofibril, Sarcomere, Myofilament.
45
Easy
45 of 107
Remembering
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Connective tissue is
View answer and explanation
Correct option: A
Mesodermal in origin with intercellular spaces
Option A (Mesodermal in origin with intercellular spaces) is correct because connective tissue originates from the mesoderm and is characterized by having abundant extracellular matrix, creating intercellular spaces.
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46
Easy
46 of 107
Remembering
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Which of the following type of connective tissue is present at the tip of human nose?
View answer and explanation
Correct option: A
Cartilage
Option A (Cartilage) is correct because the tip of the human nose is made of cartilage.
47
Easy
47 of 107
Understanding
+4 | -1
The type of muscles present in our body
View answer and explanation
Correct option: A
Thigh are striated and voluntary
Option A (Thigh are striated and voluntary) is correct because the thigh muscles are skeletal muscles, which are striated and under voluntary control.
48
Easy
48 of 107
Remembering
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Which of the following gland is present in man but not in frog?
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Correct option: B
Salivary gland
Option B (Salivary gland) is correct because humans have salivary glands, while frogs do not.
49
Easy
49 of 107
Remembering
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Mast cells secrete
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because mast cells secrete serotonin, heparin, and histamine, all of which are involved in inflammatory and allergic responses.
50
Easy
50 of 107
Remembering
+4 | -1
Intercalated disc and cross connections are the characteristic features of
View answer and explanation
Correct option: A
Cardiac muscles
Option A (Cardiac muscles) is correct because intercalated discs and cross connections are characteristic features of cardiac muscle tissue, facilitating coordinated contractions.
51
Easy
51 of 107
Understanding
+4 | -1
In a copulating pair of Pheretima posthuma which of the two processes take place?
View answer and explanation
Correct option: B
Cross fertilization and reciprocal fertilization
Option B (Cross fertilization and reciprocal fertilization) is correct because earthworms exchange sperm during copulation (reciprocal) and fertilization occurs between different individuals (cross fertilization).
52
Easy
52 of 107
Remembering
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In Pheretima, the lateral hearts that connect the supra oesophageal blood vessel with ventral blood vessel are located in which segments?
View answer and explanation
Correct option: A
7 and 9
Option A (7 and 9) is correct because the lateral hearts in Pheretima (earthworm) are located in the 7th and 9th segments.
53
Easy
53 of 107
Remembering
+4 | -1
In which of the following animals, respiration occurs without any respiratory organ?
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Correct option: D
Earthworm
Option D (Earthworm) is correct because earthworms respire through their moist skin, allowing for gas exchange directly with the environment without specialized respiratory organs.
54
Easy
54 of 107
Understanding
+4 | -1
The main function of cells in an epithelium
is to provide protection against chemical
and mechanical stresses. Identify the
epithelium.
is to provide protection against chemical
and mechanical stresses. Identify the
epithelium.
View answer and explanation
Correct option: B
Compound epithelium
Option B (Compound epithelium) is correct because compound epithelium provides protection against chemical and mechanical stresses due to its multiple layers.
55
Easy
55 of 107
Remembering
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Cells of areolar tissues that produces or secrete fibres are called
View answer and explanation
Correct option: A
Fibroblast
Option A (Fibroblast) is correct because fibroblasts produce fibers in areolar tissue.
56
Easy
56 of 107
Understanding
+4 | -1
Which of the following statement is incorrect regarding connective tissues?
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Correct option: C
They are classified into four types
Option C (They are classified into four types) is correct because connective tissues are classified into three main types: connective tissue proper, specialized connective tissue, and fluid connective tissue, not four.
57
Easy
57 of 107
Understanding
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Which of the following statement is incorrect about the female reproductive system of frog? I. Reproductive organs includes a pair of ovaries II. Ovary has functional connections with kidneys III. A mature female can lay 15000-20000 ova at a time IV. Oviduct and ureters open separately into the cloaca
View answer and explanation
Correct option: B
II and III
Option B (II and III) is correct because ovaries do not have functional connections with kidneys, and a mature female frog lays 2500-3000 ova at a time, not 15000-20000.
58
Easy
58 of 107
Remembering
+4 | -1
Adjacent cell communicate with each other by which junction :
View answer and explanation
Correct option: B
Gap junction
Option B (Gap junction) is correct because gap junctions allow direct communication between adjacent cells through channels that permit the passage of ions and small molecules.
59
Easy
59 of 107
Understanding
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Assertion: Blood is connective tissue
Reason: In blood, cells use to secrete fibres of structural
proteins called collagen or elastin.
Reason: In blood, cells use to secrete fibres of structural
proteins called collagen or elastin.
View answer and explanation
Correct option: C
If the assertion is true but the reason is false.
Option C (If the assertion is true but the reason is false) is correct because blood is indeed a connective tissue, but its cells do not secrete collagen or elastin fibers.
60
Easy
60 of 107
Understanding
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Choose the correct option w.r.t. cockroach.
View answer and explanation
Correct option: A
Respiration : Tracheal system
Option A (Respiration : Tracheal system) is correct because cockroaches respire through a tracheal system.
Revision notes and key takeaways
Review STRUCTURAL ORGANISATION IN ANIMALS in your textbook or class notes, then use this set to check your understanding.
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