Structural Organisation in Animals Test

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Structural Organisation in Animals Test - 41

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Weekly Quiz Competition

Question 1
1 / -0

Tissue that contains fat globules is known as:

A
Ciliated epithelium

B
Adipose tissue

C
Glandular epithelium

D
Areolar tissue

Solution

Adipose tissue is a type of connective tissue. It is found below the skin and between internal organs. The cells of this tissue are filled with fat globules. Storage of fats also let it act as an insulator.
So, the correct answer is option B.
Question 2
1 / -0

Why defects in the myelin sheath is dangerous?

A
Action potentials would be conducted too slowly along the neurons

B
Muscles would not contract when stimulated

C
The thyroid gland would not be able to produce thyroxine

D
The bone tissue would not be properly maintained

Solution

The myelin sheath of neurons provides them with an insulating covering. It allows rapid transmission of signals from the nervous system to the body and vice-versa. Any damage to the myelin sheath will cause hindrance and slowing down of the transmission of signals to the axons.
So, the correct answer is 'Action potentials would be conducted too slowly along the neurons'.
Question 3
1 / -0

Which of the following germ layers form smooth muscle?

A
Endoderm

B
Mesoderm

C
Epiderm

D
Ectoderm

E
None of the above

Solution

Three germ layers namely, ectoderm, endoderm and mesoderm, develop during gastrulation and gives rise to different parts of the organism. The mesoderm gives rise to connective tissue (cartilage and bone), striated and smooth muscles, the heart walls, blood, lymph vessels, kidneys, gonads, spleen and notochord.
Thus, the correct answer is option 'Mesoderm'.
Question 4
1 / -0

Which of the following tissues is made up of long contractile cells packed with actin and myosin microfilaments?

A
Epithelial tissue

B
Adipose tissue

C
Fibrous connective tissue

D
Nervous tissue

E
Muscle tissue

Solution

Muscles contract via the action of proteins actin and myosin. Both these proteins are present as microfilaments. Actin forms the thin filaments of muscle cells and myosin forms the thick filaments.
So, the correct answer is 'Muscle tissue'.
Question 5
1 / -0

The following are the parts of alimentary canal of cockroach and arrange them in correct sequence (anterior and posterior end).
(A) Stomodael valve
(B) Crop
(C) Ileum
(D) Proventriculus
(E) Mesenteron
(F) Colon

A
D- B- E- A- C- F

B
D- B- A- C- F- E

C
B- D- A- E- C- F

D
B- D- A- C- E- F

Solution

The alimentary canal is divided into three main portions:
Foregut: it consists of mouth surrounded by mouthparts. The mouth cavity is pharynx. It continues as the oesophagus and then the canal enlarges into the crop which is thin-walled. The crop opens into a short, muscular organs, the gizzard or proventriculus.
Midgut: At the junction of the gizzard and the stomach are valves called the stomodael valves. The midgut forms the mesenteron and consists entirely of stomach and ventriculus.
Hindgut: The hindgut is a coiled structure consisting of anterior ileum, middle colon and posterior rectum.
Thus, the correct answer is option (C).
Question 6
1 / -0

In the transverse section of Pheretima, identify the correct sequence of body wall layers from outer to inner side.
(A) Circular muscles
(B) Parietal peritoneum
(C) Epidermis
(D) Cuticle
(E) Longitudinal muscles

A
D$$\rightarrow$$ C $$\rightarrow$$ E $$\rightarrow$$ A $$\rightarrow$$B

B
D$$\rightarrow$$ C $$\rightarrow$$ A $$\rightarrow$$ E $$\rightarrow$$ B

C
D $$\rightarrow$$ B $$\rightarrow$$ A $$\rightarrow$$ E $$\rightarrow$$C

D
C $$\rightarrow$$ B $$\rightarrow$$ E $$\rightarrow$$ A $$\rightarrow$$ D

Solution

In the transverse section of body wall of Pheretima, the wall layers from outer side (periphery) to innerside are cuticle, epidermis (supporting epidermal cells, which include albumen and mucous cell), circular muscular layer (circular muscle), longitudinal muscle layer (longitudinal muscle), then circular muscles strand and the last is parietal layer of coelomic epithelium (parietal peritoneum).
Thus, the correct answer is option B.
Question 7
1 / -0

Which of the following is an example of circadian rhythm?

A
Simple reflex

B
Complex reflex

C
Fixed action patterns

D
Behavioral cycles

E
Environmental rhythms

Solution

A biological process displaying an entrainable endogenous oscillation of approximately 24 hours is termed as a circadian rhythm. It is basically an internal clock oscillating at 24 hours. Behavioral cycles tend to repeat themselves after almost 24 hours, hence, they are an example of circadian rhythms.
So, the correct answer is 'Behavioral cycles'.
Question 8
1 / -0

Stratified squamous epithelium is found in:

A
Pharynx

B
Trachea

C
Ileum

D
Bowmans capsule

Solution

A stratified squamous epithelium consists of squamous epithelial cells arranged in layers upon a basal membrane. Only one layer is in contact with the basement membrane; the other layers adhere to one another to maintain structural integrity.
The pharynx is part of the digestive system and also of the conducting zone of the respiratory system. The pharynx is lined by non-keratinised squamous stratified epithelium.
Hence the correct option is A.
Question 9
1 / -0

In chordates, which of the following helps in locomotion?

A
Jointed chitinous appendages attached to muscles

B
Muscles attached to an exoskeleton

C
Paired muscles attached to an endoskeleton

D
All of the above

E
None of the above

Solution

Paired muscles attached to an endoskeleton helps in locomotion in chordates. They are capable of locomotion by means of muscular movements. Eg. the biceps and triceps bring about the movement of the upper arm.
Thus, the correct answer is option C.
Question 10
1 / -0

The bundle of axons in the central nervous system is known as

A
Nerve

B
Ganglion

C
Tract

D
Neuron

Solution

In the central nervous system, a bundle of axons is called a tract. Ascending tracts carry impulses along the spinal cord toward the brain, and descending tracts carry them from the brain or higher regions in the spinal cord to lower regions. The main nerve tracts in the central nervous system are of three types – association fibers, commissural fibers, and projection fibers. So, the correct answer is option C.

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Re-Attempt Weekly Quiz Competition

Structural Organisation in Animals Test - 41

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Structural Organisation in Animals Test - 41

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SHARING IS CARING

Question 1

Ciliated epithelium

Adipose tissue

Glandular epithelium

Areolar tissue

Solution

Question 2

Action potentials would be conducted too slowly along the neurons

Muscles would not contract when stimulated

The thyroid gland would not be able to produce thyroxine

The bone tissue would not be properly maintained

Solution

Question 3

Endoderm

Mesoderm

Epiderm

Ectoderm

None of the above

Solution

Question 4

Epithelial tissue

Adipose tissue

Fibrous connective tissue

Nervous tissue

Muscle tissue

Solution

Question 5

D- B- E- A- C- F

D- B- A- C- F- E

B- D- A- E- C- F

B- D- A- C- E- F

Solution

Question 6

D$$\rightarrow$$ C $$\rightarrow$$ E $$\rightarrow$$ A $$\rightarrow$$B

D$$\rightarrow$$ C $$\rightarrow$$ A $$\rightarrow$$ E $$\rightarrow$$ B

D $$\rightarrow$$ B $$\rightarrow$$ A $$\rightarrow$$ E $$\rightarrow$$C

C $$\rightarrow$$ B $$\rightarrow$$ E $$\rightarrow$$ A $$\rightarrow$$ D

Solution

Question 7

Simple reflex

Complex reflex

Fixed action patterns

Behavioral cycles

Environmental rhythms

Solution

Question 8

Pharynx

Trachea

Ileum

Bowmans capsule

Solution

Question 9

Jointed chitinous appendages attached to muscles

Muscles attached to an exoskeleton

Paired muscles attached to an endoskeleton

All of the above

None of the above

Solution

Question 10

Nerve

Ganglion

Tract

Neuron

Solution

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