Structural Organisation in Animals Test

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Structural Organisation in Animals Test - 16

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Weekly Quiz Competition

Question 1
1 / -0

Respiratory pigment present in Cockroach is

A
Malpadin

B
Vanadium

C
Haemocyanin

D
None of the above

Solution

The blood in cockroaches is called hemolymph. Hemolymph is colourless because there is no respiratory pigment. The cockroaches lack respiratory pigment.
So, the correct answer is 'None of the above'.
Question 2
1 / -0

Characteristics of female cockroach

A
Presence of anal style

B
Each ovary is made up of '6' ovarioles

C
One pair spermatheca present and opens in genital chamber

D
Genital pouch is made up of $$9^{th}, 10^{th}$$ tergum and $$9^{th}$$ sternum
Solution
The female reproductive system consists of two large ovaries, lying laterally in the $$2^{nd}$$– $$6^{th}$$ abdominal segments. Each ovary is formed of a group of eight ovarian tubules or ovarioles, containing a chain of developing ova. Oviducts of each ovary unite into a single median oviduct (also called
vagina) which opens into the genital chamber. A pair of spermatheca is present in the $$6^{th}$$ segment which opens into the genital chamber.
Hence One pair spermatheca present and opens in the genital chamber is Characteristics of a female cockroach.
So, the correct answer is ' One pair spermatheca present and opens in the genital chamber'.
Question 3
1 / -0

Myology is the study of

A
Muscles

B
Bones

C
Cartilages

D
None of the above

Solution

"Myo" refers to "Muscles". Myology is the study of the muscular system, including the study of the structure, function, and diseases of muscle.
So, the correct answer is 'Muscles'
Question 4
1 / -0

Clitellum of Pheretima is thick girdle that is

A
Nonglandular around 14$$^{th}$$-16$$^{th}$$ segments

B
Glandular around 14$$^{th}$$-16$$^{th}$$ segments

C
Glandular around 16$$^{th}$$-18$$^{th}$$ segments

D
Nonglandular around 16$$^{th}$$-18$$^{th}$$ segnments

Solution

Earthworm belongs to phylum Annelida which has segmented body. Clitellum of Pheretima is a thick Glandular region located in segments 14, 15 and 16. The glands help in cocoon formation during the breeding season. So, the correct answer is option B.
Question 5
1 / -0

Which of the following is the excretory organs of earthworm?

A
Coelom

B
Flame cells

C
Nephridia

D
Gizzard
Solution
- The earthworm is an invertebrate animal which belongs to the phylum Annelida.
- They are made up of many segments. Each segment of earthworm contains two nephridia. Each nephridia open into the body cavity of an earthworm.
- The nephridia is composed of two parts, namely, nephridiostome and nephridiopore.
- In earthworm, the urea, salts and water are excreted out through the nephridiopore of nephridia.
Thus, the correct option is option C.
Question 6
1 / -0

In earthworm, the characteristic internal median fold of dorsal wall of the intestine, called as 'typhlosole' is present in

A
5$$^{th}$$ to 9$$^{th}$$segments

B
9$$^{th}$$ to 14$$^{th}$$ segments

C
26$$^{th}$$ to 25$$^{th}$$ segments

D
15$$^{th}$$ to last segment

E
35$$^{th}$$ to last segment

Solution

The lining of the intestine in earthworm is folded to form villi, one of these villi becomes larger than the others and is known as typhlosole. The typhlosole runs mid-dorsally from the $$26^{th}$$ segment to $$25^{th}$$ segments.
So, the correct answer is '$$26^{th}$$ segment to $$25^{th}$$ segments'
Question 7
1 / -0

In earthworm, arrangement of blood vessels are

A
Different in last fifteen segments

B
Different in first thirteen segments

C
Same throughout

D
Different in middle thirteen segments

Solution

The blood vessels of earthworm are grouped into three types, as the longitudinal, the lateral and the intestinal plexuses. The nature and arrangement of the blood vessels in the first 13 segments are different from the segments behind 13. So, the correct answer is option B.
Question 8
1 / -0

In earthworm, ovary is situated in ............ segment.

A
13$$^{th}$$

B
9$$^{th}$$

C
10$$^{th}$$

D
26$$^{th}$$
Solution
- A pair of small white ovaries lie in the 13th segment on either side of the ventral nerve cord of the earthworm.
- Each ovary is whitish made of finger-like lobules in which ova are arranged in various stages of development.
- An oviductal funnel lies immediately behind each ovary in the 13th segment and it leads into a short oviduct.
- Both the oviducts converge and form a single female genital aperture at the 14th segment.
So, the correct answer is option A.
Question 9
1 / -0

In earthworm, the effective organ for food digestion is

A
Pharynx

B
Intestine

C
Stomach

D
Both B and C
Solution
- Earthworm belongs to phylum Annelida which has a tubular body plan.
- It has a pear-shaped muscular pharynx that extends up to the fourth segment.
- The pharyngeal mass or bulb produces mucus and proteolytic enzymes, that are lodged into the salivary chamber before use and the ventral conducting chamber of the pharynx serves as the passage for the ingested food.
- The pharynx acts as a pump in feeding.
- When the mouth is pressed against the bits or humus or mud, then the pharynx undergoes a series of contractions resulting in the food sucking into the buccal chamber and then pumping the same backward into the esophagus.
So, the correct answer is option A.
Question 10
1 / -0

Earthworm has

A
Simple eyes

B
Compound eyes

C
Apposition eyes

D
No eyes
Solution
- An earthworm is a burrowing animal, as it lives in underground burrows not exposed to light, it does not have eyes.
- They have touch-sensitive organs which are composed of photoreceptor cells.
- They have moist skin which helps in the exchange of gases.
So, the correct answer is option C.

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Structural Organisation in Animals Test - 16

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Structural Organisation in Animals Test - 16

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SHARING IS CARING

Question 1

Malpadin

Vanadium

Haemocyanin

None of the above

Solution

Question 2

Presence of anal style

Each ovary is made up of '6' ovarioles

One pair spermatheca present and opens in genital chamber

Genital pouch is made up of $$9^{th}, 10^{th}$$ tergum and $$9^{th}$$ sternum

Solution

Question 3

Muscles

Bones

Cartilages

None of the above

Solution

Question 4

Nonglandular around 14$$^{th}$$-16$$^{th}$$ segments

Glandular around 14$$^{th}$$-16$$^{th}$$ segments

Glandular around 16$$^{th}$$-18$$^{th}$$ segments

Nonglandular around 16$$^{th}$$-18$$^{th}$$ segnments

Solution

Question 5

Coelom

Flame cells

Nephridia

Gizzard

Solution

Question 6

5$$^{th}$$ to 9$$^{th}$$segments

9$$^{th}$$ to 14$$^{th}$$ segments

26$$^{th}$$ to 25$$^{th}$$ segments

15$$^{th}$$ to last segment

35$$^{th}$$ to last segment

Solution

Question 7

Different in last fifteen segments

Different in first thirteen segments

Same throughout

Different in middle thirteen segments

Solution

Question 8

13$$^{th}$$

9$$^{th}$$

10$$^{th}$$

26$$^{th}$$

Solution

Question 9

Pharynx

Intestine

Stomach

Both B and C

Solution

Question 10

Simple eyes

Compound eyes

Apposition eyes

No eyes

Solution

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