Structural Organisation in Animals Test

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Structural Organisation in Animals Test - 65

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Weekly Quiz Competition

Question 1
1 / -0

Tessellated epithelium lines the

A
Trachea

B
Gonads

C
Stomach

D
Coelom

Solution

Tessellated epithelium is another term used for simple squamous epithelium also called as pavement epithelium due to it's flat appearance. It is mainly present in the alveoli and trachea and blood capillaries and performs the function of diffusion.
So, the correct option is 'Trachea'.
Question 2
1 / -0

Select the correct option:
Identify the following simple epithelial tissues and select the correct option

A
A-Cuboidal ; B- Squamous; C- Columnar; D- Ciliated columnar

B
A- Squamous; B- Cuboidal ; C- Columnar; D-Ciliated cuboidal

C
A-Pseudostra tified squamous; B- columnar; C- Cuboidal; D- Ciliated cuboidal

D
A- Squamous; B- Columnar; C- Cuboidal; D- Pseudostratified columnar (ciliated)

Solution

A - Squamous Epithelium
B - Cuboidal Epithelium
C - Columnar Epithelium
D - Ciliated cuboidal Epithelium
Question 3
1 / -0

Assertion:
A myelinated nerve fibre is enveloped by Schwann cells, which form a myelin sheath around the axon.

Reason:
An unmyelinated nerve fibre is not enclosed by a Schwann cell and hence does not form a myelin sheath around the axon.

A
Both assertion and reason are true and the reason is the correct explanation of the assertion

B
Both assertion and reason are true but the reason is not the correct explanation of the assertion

C
Assertion is true but reason is false

D
Both assertion and reason are false

Solution

The myelinated nerve fibres contain a myelin sheath surrounding the axons of nerve cells. Unmyelinated nerve fibre is not enclosed by a Schwann cell and hence does not form a myelin sheath around the axon.
So the correct option is B.
Question 4
1 / -0

Which of the following is incorrect for Pheretima?

A
Genital papillae are present in 17th and 19th segment

B
Male genital pores are present on 18th segment

C
Clitellum is present on segments 24,25,26.

D
Segments of earthworm are called somites

Solution

Clitellum or cingulum is a prominent circular band of glandular skin found from the 14th to 16th segments. It secretes mucus and albumen which helps in the formation of cocoon, and is used from fertilization of the eggs.
Question 5
1 / -0

Blood vessels in Pheretima, which have valves are

A
dorsal

B
ventral

C
supra-oesophageal

D
lateral oesophageal

Solution

Blood vessels of Pheretima, which have valves are dorsal. Blood passes from backward to forward direction. To prevent the backward flow of the blood, valves are present infront of each septum.
Question 6
1 / -0

Which of the following structures is correctly matched with its description?

A
Septal nephridia and pharyngeal nephridia- Both are exonephric

B
Typhlosole- Helps in grinding the soil particles and decaying leaves

C
Sensory system- Possesses light and touch receptors in earthworm

D
Gizzard- Internal median fold present in the dorsal wall of the intestine of earthworm
Solution
- Earthworms have a simple brain that connects with nerves from their skin and muscles. The nerves detect light, vibrations and even some tastes. They do not possess eyes like humans and other complex animals; instead, they have light receptors that detect when it is light or dark. The muscles make movements in response to touch and taste.
- Septal nephridia and pharyngeal nephridia in earthworms are both enteronephric (discharging excreta into the intestine).
- Typhlosole in earthworms, a dorsal flap of the intestine that runs along most of its length, increases intestine surface area for more efficient absorption of digested nutrients.
- Gizzard, in many birds, is the hind part of the stomach, specially modified for grinding food.
Question 7
1 / -0

The lateral hearts in earthworm

A
are situated in segments 7 and 9

B
are situated in segments 6 and 8

C
are situated in segments 8 and 10

D
are situated in segments 6 and 11

Solution

A pair of large, thick and muscular vertical vessels, called hearts are present in each of the segments 7, 9, 12 and 13 in earthworm. Heats of 7th and 9th segments are called lateral hearts that connect dorsal and ventral vessels only.
Question 8
1 / -0

The given figure represents head region of cockroach. In which one of the options all the four parts A, B, C and D are labelled correctly?

A
A- Labrum; B- Mandible; C- Maxilla; D- Labium

B
A- Mandible; B- Maxilla; C- Labium; D- Labrum

C
A- Maxilla; B- Labium; C- Mandible; D- Labrum

D
A- Labium; B- Maxilla; C- Labrum; D- Mandible

Solution

A - Labium
B - Maxilla
C - Labrum
D - Mandible
So, the correct answer is 'A- Labium; B- Maxilla; C- Labrum; D- Mandible'.
Question 9
1 / -0

Choose the incorrect pair from the matches given below:

A
Antennae - Sensory receptors

B
Metathoracic wings - Flying

C
Malpighian tubule - Excretion

D
Crop - Food grinding

Solution

The crop is a small pear shaped structure that stores organic food material. while food grinding takes place in the gizzard.
Therefore, food grinding does not occur in crop.
So, the correct answer is 'Crop - Food grinding'
Question 10
1 / -0

Which of the following is absent in the coelomic fluid of earthworm?

A
Salts

B
Haemoglobin

C
Corpuscles

D
Proteins

Solution

Coelomic fluid of earthworm is alkaline, colourless fluid containing water, slats some proteins and corpuscles. Haemoglobin is not present in coelomic fluid. It is found dissolved in blood plasma giving red colour to blood. Blood is confined to heart and vessels in closed circulatory system.

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Re-Attempt Weekly Quiz Competition

Structural Organisation in Animals Test - 65

Result

Structural Organisation in Animals Test - 65

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Rank

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SHARING IS CARING

Question 1

Trachea

Gonads

Stomach

Coelom

Solution

Question 2

A-Cuboidal ; B- Squamous; C- Columnar; D- Ciliated columnar

A- Squamous; B- Cuboidal ; C- Columnar; D-Ciliated cuboidal

A-Pseudostra tified squamous; B- columnar; C- Cuboidal; D- Ciliated cuboidal

A- Squamous; B- Columnar; C- Cuboidal; D- Pseudostratified columnar (ciliated)

Solution

Question 3

Both assertion and reason are true and the reason is the correct explanation of the assertion

Both assertion and reason are true but the reason is not the correct explanation of the assertion

Assertion is true but reason is false

Both assertion and reason are false

Solution

Question 4

Genital papillae are present in 17th and 19th segment

Male genital pores are present on 18th segment

Clitellum is present on segments 24,25,26.

Segments of earthworm are called somites

Solution

Question 5

dorsal

ventral

supra-oesophageal

lateral oesophageal

Solution

Question 6

Septal nephridia and pharyngeal nephridia- Both are exonephric

Typhlosole- Helps in grinding the soil particles and decaying leaves

Sensory system- Possesses light and touch receptors in earthworm

Gizzard- Internal median fold present in the dorsal wall of the intestine of earthworm

Solution

Question 7

are situated in segments 7 and 9

are situated in segments 6 and 8

are situated in segments 8 and 10

are situated in segments 6 and 11

Solution

Question 8

A- Labrum; B- Mandible; C- Maxilla; D- Labium

A- Mandible; B- Maxilla; C- Labium; D- Labrum

A- Maxilla; B- Labium; C- Mandible; D- Labrum

A- Labium; B- Maxilla; C- Labrum; D- Mandible

Solution

Question 9

Antennae - Sensory receptors

Metathoracic wings - Flying

Malpighian tubule - Excretion

Crop - Food grinding

Solution

Question 10

Salts

Haemoglobin

Corpuscles

Proteins

Solution

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