Structural Organisation in Animals Test

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Structural Organisation in Animals Test - 46

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Weekly Quiz Competition

Question 1
1 / -0

Integumentary nephridia of earthworm occurs in

A
All segments except the first two

B
First two segments of the body

C
First fifteen segments

D
All the segments

Solution

Integumentary nephridia occur at all segments except first two segments and vary from 200 to 250 per segment. Clittellar segments have 2000 to 2500 each. They are attached to the body wall and are closed internally without nephrostome. They remove metabolic wastes from the blood only and are the smallest in size. So, the correct answer is 'All segments except the first two'.
Question 2
1 / -0

Which of the following is not a connecting tissue?

A
Blood

B
Bone

C
Lymph

D
Nerve

Solution

Bone, Blood and Lymph are all types of specialized connective tissue. But, nerve cells belong to a different set of tissues named nervous tissue. Nervous Tissues are the primary tissue of the nervous system that allows communication between various organs and tissues. It is composed of glial cells and neurons.
So, the correct answer is 'Nerve'.
Question 3
1 / -0

Female genital aperture of Cockroach occurs over

A
Eighth sternum

B
Seventh sternum

C
Ninth sternum

D
Between 9th sternum and 10th tergum

Solution

In females, the 8th and 9th sterna form a brood or genital pouch whose anterior part contains female gonophore, spermathecal pores, and collateral glands. The eighth sternum bears one pair of gonapophyses as the genital aperture. Hence the female genital aperture of cockroach occurs over the eighth sternum.
So, the correct answer is 'Eighth sternum'.
Question 4
1 / -0

Nephridiopores of earthworm occur in segments

A
All segments

B
All segments except first two

C
All segments except first two and last

D
All except clitellum, first two and last segment

Solution

In Earthworm, large number of very minute nephridiopores aree found in all segments except the fist two segments. Metabolic wastes are released out through these pores. Clitellar region contain 2000-2500 nephridiopores while other possess only 200-250. These pores are apertures of integumentary nephridia.
So, the correct answer is 'All segments except first two'.
Question 5
1 / -0

Stomach of earthworm has the following glands

A
Digestive

B
Calcareous

C
Endocrine

D
Both A and B

Solution

The stomach of Earthworm has digestive and calcareous glands. The food of the Earthworm is decaying leaves and organic matter mixed with soil. Calciferous glands present in the stomach neutralize the humic present in the humus. The ingested organic-rich soil passes through the digestive tract where digestive enzymes break down complex food into smaller absorbable units.
So the correct answer is "Both A and B".
Question 6
1 / -0

Circulatory system of Pheretima is of

A
Open type

B
Closed type

C
Both A and B

D
None of the above

Solution

Pheretima is a genus of earthworm. It belongs to the phylum Annelida. It has a closed type of blood vascular system or circulatory system comprises of heart and blood vessels that help in blood circulation.
So, the correct answer is 'Closed type'.
Question 7
1 / -0

Blood of Pheretima is

A
Red

B
Blue

C
Colourless

D
None of the above

Solution

Blood in Pheritima is red due to haemoglobin as it is present in higher animals but it is dissolved in plasma and not confined to special corpuscles like erythrocytes. So, the correct answer is 'Red'.
Question 8
1 / -0

Body cavity of earthworm is

A
Schizocoel

B
Enterocoel

C
Pseudocoel

D
None of the above

Solution

Coelom is the cavity inside mesoderm. Schizocoelom is the body cavity formed by the splitting of mesoderm. Annelids like earthworms have this type coelom. So, the correct answer is 'Schizocoel'.
Question 9
1 / -0

Brood pouch is formed in female Cockroach by

A
Seventh sternum

B
Eighth sternum

C
Ninth sternum

D
All the above

Solution

The abdomen in both male and female cockroach consists of 10 segments. In females, the 7th sternum is boat-shaped and together with the 8th and 9th sterna form a brood or genital pouch whose anterior part consists of female gonopore, spermathecal pores and collateral glands.
So, the correct answer is ' All the above'.
Question 10
1 / -0

Dorsal pores of Earthworm do not occur in the region of

A
First eleven and last annulus

B
14-16 annuli

C
100-110 annusli

D
26-40 segments

Solution

In earthworm, minute dorsal pores are present one in each inter segmental groove in the mid dorsal surface after the 12 segment to the last 2 nd segment. Coelomic fluid released out through these pores kills harmful microbes such as bacteria.
So, the correct answer is 'First eleven and last annulus'.

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Re-Attempt Weekly Quiz Competition

Structural Organisation in Animals Test - 46

Result

Structural Organisation in Animals Test - 46

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SHARING IS CARING

Question 1

All segments except the first two

First two segments of the body

First fifteen segments

All the segments

Solution

Question 2

Blood

Bone

Lymph

Nerve

Solution

Question 3

Eighth sternum

Seventh sternum

Ninth sternum

Between 9th sternum and 10th tergum

Solution

Question 4

All segments

All segments except first two

All segments except first two and last

All except clitellum, first two and last segment

Solution

Question 5

Digestive

Calcareous

Endocrine

Both A and B

Solution

Question 6

Open type

Closed type

Both A and B

None of the above

Solution

Question 7

Red

Blue

Colourless

None of the above

Solution

Question 8

Schizocoel

Enterocoel

Pseudocoel

None of the above

Solution

Question 9

Seventh sternum

Eighth sternum

Ninth sternum

All the above

Solution

Question 10

First eleven and last annulus

14-16 annuli

100-110 annusli

26-40 segments

Solution

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