Structural Organisation in Animals Test

Result

Structural Organisation in Animals Test - 95

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Weekly Quiz Competition

Question 1
1 / -0

Smooth muscles are found in all the sites mentioned below except:

A
Alimentary tract

B
Uterus

C
Oviduct

D
External muscle of the eye ball

Solution

Smooth muscles are involuntary muscles present in the alimentary canal, uterus, oviduct etc.
So, the correct option is D.

Question 2

1 / -0

Select the correct option:

Match column I with column II and select the correct option from the codes given below:

Column I (Parts of alimentary canal of earthworm)	Column II (Respective segments)
(A) Buccal cavity	(i) 1-3
(B) Pharynx	(ii) 3-4
(C) Oesophagus	(iii) 5-7
(D) Gizzard	(iv) 8-9
(E) Stomach	(v) 9-14
(F) Intestine	(vi) 15 to last
(G) Typhlosole	(vii) 26-35

A- (i); B- (ii); C- (iii); D- (iv); E- (v); F- (vi); G- (vii)

A- (i); B- (ii); C- (iii); D- (v); E- (iv); F- (vi); G- (vii)

A- (i); B- (iii); C- (ii); D- (iv); E- (v); F- (vii); G- (vi)

A- (i); B- (iii); C- (ii); D- (v); E- (iv); F- (vii); G- (vi)

Solution

(A) Buccal cavity: 1-3

(B) Pharynx: 3-4

(D) Gizzard: 8-9

(E) Stomach: 9-14

(F) Intestine: 15 to last

(G) Typhlosole: 26-35

So, the correct answer is 'A- (i); B- (ii); C- (iii); D- (iv); E- (v); F- (vi); G- (vii)'.

Question 3
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In the given diagram of a leg of cockroach, parts have been indicated by alphabets. Select the answer in which these alphabets have been correctly matched with the parts which they indicate.

A
A- Coxa; B- Tibia; C- Tarsus; D- Femur; E- Trochanter

B
A- Coxa; B- Femur; C- Trochanter; D- Tarsus; E- Tibia

C
A- Coxa; B- Tarsus; C- Femur; D- Tibia; E- Trochanter

D
A- Coxa; B- Trochanter; C- Femur; D- Tibia; E- Tarsus

Solution

Leg of cockroach is articulated with its thoracic segment by a stout flattened, basal coxa, followed by a smaller triangular trochanter. The latter is fused to a stout spiny femur, followed by a slender spiny tibia, which is the longest segment of leg. Finally, the tarsus is made of 5 very small movable podomeres or tarsomeres bearing fine hairs.
Question 4
1 / -0

Select the correct option:
Which of the following figures shows the mandibles of cockroach?

A

B

C

D

Solution

Figure (C) shows the mandibles of a cockroach.
Question 5
1 / -0

In Pheretima, there are red coloured round bodies in 4th, 5th and 6th segments above the alimentary canal. They are believed to be involved in

A
respiration

B
digestion

C
reproduction

D
leucocyte production.

Solution

In Pheretima, the red coloured bodies found in 4th, 5th, 6th segments above the alimentary canal are called blood glands. These glands serve for the manufacture of blood corpuscles (leucocytes) and haemoglobin.
Question 6
1 / -0

Select the correct option:
In the mouth parts of a cockroach, the labium forms _______ (i) while _____ (ii) acts as a tongue.

A
(i)- upper lip; (ii)- maxilla

B
(i)- upper lip; (ii)- hypopharynx

C
(i)- lower lip; (ii)- maxilla

D
(i)- lower lip; (ii)- hypopharynx

Solution

The mouth parts of cockroach are of biting and chewing type consisting of labrum (upper lip), a pair of mandibles, a pair of maxillae and a labium (lower lip). Within the oral cavity enclosed by the mouthparts, lies a median flexible lobe called hypopharynx (tongue).
Question 7
1 / -0

Which of the following blood vessels in earthworm is both collecting as well as distributing?

A
Dorsal vessel

B
Ventral vessel

C
Sub neural vessel

D
Lateral oesophageal vessel

Solution

Dorsal vessel is a longitudinal blood vessel lying above the alimentary canal that extends through the length of the body. It is the largest blood vessel and it extends through the length of the body. It is the largest blood vessel and is contractile. The anterior part of the dorsal vessel, up to the 13th segment, functions as the distributing vessel. It also supplies blood to the esophagus, gizzard and pharyngeal nephridia by paired vessel. Behind the 13th segment the dorsal vessel functions as the collecting vessel. It acts as both distributing as well as collecting.
So, the correct option is 'Dorsal vessel'.
Question 8
1 / -0

Which of the following statements is incorrect about the frog?
(i) Eyes are bulged out and covered by a nicitating membrane that protects them while in water.
(ii) On either side of the eyes a membranous tympanum (ear) receives sound signals.
(iii) The hind limbs end in four digits and they are larger and muscular than fore limbs that end in five digits.
(iv) Feet have webbed digits that help in swimming.
(v) Frogs exhibit sexual dimorphism

A
(i) and (v)

B
(iii) only

C
(ii) and (iii)

D
(iv) only

Solution

In frog, the hind limbs end in five digits and they are larger and muscular than fore limbs that end in four digits.
Question 9
1 / -0

The hind brain in frog consists of

A
Cerebellum

B
Medulla oblongata

C
Diencephalon

D
Both (a) and (b)
Solution
- In frogs, the brain is divided into forebrain, midbrain, and hindbrain.
- The forebrain includes olfactory lobes, paired cerebral hemispheres, and diencephalon.
- Midbrain includes a pair of optic lobes.
- The hindbrain in frog consists of the cerebellum and medulla oblongata.
So, the correct answer is 'Both (a) and (b)'
Question 10
1 / -0

In cocroach elytra are articulated to the tergites of

A
Prothorax

B
Mesothorax

C
Metathorax

D
Abdomen

Solution

A.Prothorax – It is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs and wings(elytra).

B.Mesothorax - is the middle of the three segments in the thorax of an insect, and bears the second pair of legs. Its principal sclerites (exoskeletal plates) are the mesonotum (dorsal), the mesosternum (ventral), and the mesopleuron (lateral) on each side. All adult insects possess legs on the mesothorax.

C.Metathorax – is the posterior of the three segments in the thorax of an insect, and bears the third pair of legs. Its principal sclerites (exoskeletal plates) are the metanotum (dorsal), the metasternum (ventral), and the metapleuron (lateral) on each side.

D.Abdomen – lower part of the body.
So, the correct option is ‘Prothorax’.