Structural Organisation in Animals Test

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Structural Organisation in Animals Test - 10

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Weekly Quiz Competition

Question 1
1 / -0

The winter sleep in frog is called

A
Hibernation

B
Aestivation

C
Camouflage

D
Mimicry

Solution

During extreme heat and cold period, frog takes shelter in deep burrows to protect them from extreme environmental conditions. This is called as summer sleep (aestivation) and winter sleep (hibernation).
Question 2
1 / -0

The correct order of digestive system of frog is

A
Mouth, oesophagus, buccal cavity, stomach, rectum, intestine,cloca, cloacal aperture, cloaca

B
Mouth, buccal cavity, oesophagus, stomach, intestine, rectum, cloaca, cloacal aperture

C
Mouth, oesophagus, buccal cavity, stomach, intestine, rectum, cloacal aperture, cloaca

D
Mouth, buccal cavity, oesophagus, intestine, stomach, rectum, cloacal aperture, cloaca

Solution

The digestive system of frog begins from the mouth which opens into the buccal cavity that leads to the oesophagus through pharynx. Oesophagus is a short tube that opens into the stomach which in turn continues as the intestine and then rectum. The rectum finally opens outside by the cloaca through cloacal aperture.
Question 3
1 / -0

The special venous connection between liver and intestine as well as the kidney and lower parts of the body present in frogs is called

A
Arterial system

B
Hepatic portal system

C
Renal portal system.

D
Vena cava

Solution

Renal portal system forms special blood circulation system between liver and intestine. It also forms special connection between the kidney and lower parts of the body present in frogs.
Question 4
1 / -0

The number of nymphs produced from single ootheca of frog is

A
16

B
12

C
15

D
10

Solution

Young ones of frogs are called nymphs. When the ootheca ruptures, 16 nymphs come out.
Question 5
1 / -0

Match the following with reference to frog

Column I
a) Medulla oblongata
b) Smell
c) Touch
d) Cranial nerves

Column II
i) Sensory papillae
ii) PNS
iii) Foramen magnum
iv) Nasal epithelium

A
a) – iv), b) – ii), c) – i), d) – iii)

B
a) – ii), b) – i), c) – iii), d) – iv)

C
a) – iii), b) – iv), c) – i), d) – ii)

D
a) – i), b) – iii), c) – iv), d) – ii)

Solution

The medulla oblongata passes out through the foramen magnum and continues into spinal cord, which is enclosed in the vertebral column. Frog has different types of sense organs. This includes organs of touch (sensory papillae) and smell (nasal epithelium). The nervous system is organized into a central nervous system including brain and spinal cord and peripheral nervous system (PNS) including cranial and spinal nerves.
Question 6
1 / -0

Blood plasma contains ----------------- % water.

A
90

B
60

C
98

D
80

Solution

Blood consists of blood plasma, formed cells ( RBC, WBC, Platelets) along with sugar, proteins etc. Blood plasma contains about 90% water with a number of salts and few circulating hormones.
Question 7
1 / -0

Myelin sheath is mainly made of

A
Phospholipids

B
Fats

C
Carbohydrates

D
Protein

Solution

Myelin sheath is the outer layer of axon of nerve cells. It is made up of phospholipids. It is mainly protective in nature, acts as insulator and help in transmission of impulses.
Question 8
1 / -0

The formation of erythrocytes in foetus takes place in

A
Liver and Spleen.

B
Red bone marrow

C
Sarcoplasm

D
Blood plasma

Solution

In the early fetus, erythropoiesis takes place in the mesodermal cells of the yolk sac. Later, the production of RBCs starts in the fetal liver and increases till the 2^ndtrimester. After this, the rate of synthesis begins to decline in liver as erythropoiesis increases in the bone marrow. RBCs are still produced in the liver for approximately 1 week after birth.
Question 9
1 / -0

Nerve fibres in the CNS can regenerate after injury due to presence of

A
Neurilemma.

B
Myelin sheath

C
Neurolemma

D
Plasmolemma

Solution

Nerve fibres in the CNS can regenerate after injury due to presence of neurilemma. They are the are outermost nucleated cytoplasmic layer of schwann cells that surrounds the axon of the neuron.
Question 10
1 / -0

The most active phagocytic white blood cells are

A
Neutrophils and eosinophils

B
Lymphocytes and macrophages

C
Eosinophils and neutrophils

D
Neutrophils and monocytes.

Solution

The most active phagocytic white blood cells are nerutophils and monocytes. These cells try to engulf the microbes that enters the blood to cause disease.

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Structural Organisation in Animals Test - 10

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Structural Organisation in Animals Test - 10

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SHARING IS CARING

Question 1

Hibernation

Aestivation

Camouflage

Mimicry

Solution

Question 2

Mouth, oesophagus, buccal cavity, stomach, rectum, intestine,cloca, cloacal aperture, cloaca

Mouth, buccal cavity, oesophagus, stomach, intestine, rectum, cloaca, cloacal aperture

Mouth, oesophagus, buccal cavity, stomach, intestine, rectum, cloacal aperture, cloaca

Mouth, buccal cavity, oesophagus, intestine, stomach, rectum, cloacal aperture, cloaca

Solution

Question 3

Arterial system

Hepatic portal system

Renal portal system.

Vena cava

Solution

Question 4

16

12

15

10

Solution

Question 5

a) – iv), b) – ii), c) – i), d) – iii)

a) – ii), b) – i), c) – iii), d) – iv)

a) – iii), b) – iv), c) – i), d) – ii)

a) – i), b) – iii), c) – iv), d) – ii)

Solution

Question 6

90

60

98

80

Solution

Question 7

Phospholipids

Fats

Carbohydrates

Protein

Solution

Question 8

Liver and Spleen.

Red bone marrow

Sarcoplasm

Blood plasma

Solution

Question 9

Neurilemma.

Myelin sheath

Neurolemma

Plasmolemma

Solution

Question 10

Neutrophils and eosinophils

Lymphocytes and macrophages

Eosinophils and neutrophils

Neutrophils and monocytes.

Solution

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