Structural Organisation in Animals Test

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Structural Organisation in Animals Test - 34

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Weekly Quiz Competition

Question 1
1 / -0

Haemoglobin is dissolved in blood plasma of

A
Frog

B
Rabbit

C
Cockroach

D
Earthworm

Solution

Pheretima exhibits a closed type of blood vascular system consisting of blood vessels, capillaries and heart. Blood glands are present on the 4$$^{th}$$, 5$$^{th}$$ and 6$$^{th}$$ segments. They produce blood cells and haemoglobin, which is dissolved in blood plasma. Hence, option D is correct.
Question 2
1 / -0

Which of the following is an example of an organ that contains a smooth muscle?

A
Iris of eye

B
Uterus

C
Bronchi

D
All of the above
Solution
- The dilator muscle of iris is a smooth muscle of the eye.
- The middle layer of the uterus is formed of smooth muscles.
- The bronchi and bronchioles also have a layer of smooth muscles which help them to contract and dilate.
Hence, the correct answer is option is 'D'.
Question 3
1 / -0

Which of the following are scientific name of Leech and Earthworm respectively?

A
Pheretima posthuma

B
Lumbricus terrestris.

C
Both of the above

D
None of the above
Question 4
1 / -0

What used to be described as Nissl granules in a nerve cell are now identified as?

A
Cell metabolites

B
Fat granules

C
Ribosomes

D
Mitochondria

Solution

A Nissl granule is a large granular body found in neurons. These granules are rough endoplasmic reticulum (RER) with rosettes of free ribosomes and are the site of protein synthesis.
Hence the correct option is C.
Question 5
1 / -0

Metamerism is the characteristic of

A
Ascaris

B
Pheretima

C
Periplaneta

D
Hydra

Solution

Metamerism is the phenomena where the animal has internal as well as external segmentation. In true metamerism, the homologous organs, like nephridia, nerves, muscles, reproductive organs, appendages etc. are present in each segment but these organs function in coordination with the others. It is shown by Pheretima. So, the correct answer is option B.
Question 6
1 / -0

Least blood supply will be present in:

A
Skeletal muscle

B
Cardiac muscle

C
Smooth muscle

D
All of the above

Solution

Tissues vary considerably in their sensitivity to hypoxia (oxygen deficiency). Smooth muscle can survive for several days without oxygen. Skeletal muscle can tolerate about 60-90 minutes of hypoxia. The brain and heart will not survive more than a few minutes without oxygen.
Therefore, the correct answer is option C.
Question 7
1 / -0

Shivering in winter is caused by

A
Voluntary action of striated muscles

B
Voluntary action of unstriated muscles

C
Involuntary action of striated muscles

D
Involuntary action of unstriated muscles

Solution

Shivering is an involuntary action of striated muscles ( skeletal muscles). Shivering is also called rigor or shuddering. It is a bodily function in response to early hypothermia or just feeling cold in warm-blooded animals. When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis. Skeletal muscles begin to shake in small movements, creating warmth by expending energy.
Hence the correct option is C.
Question 8
1 / -0

Find out the correct statement from the following.

A
In the muscles, anaerobic respiration produces lactic acid.

B
In the muscles, anaerobic respiration produces carbon dioxide, water and oxygen.

C
In muscles, Aerobic respiration produces lactic acid.

D
None of the above.

Solution

Anaerobic respiration: Not enough oxygen may reach the muscles during exercise. When this happens, they use anaerobic respiration to obtain energy.
Anaerobic respiration involves the incomplete breakdown of glucose. It releases around 5% of the energy released by aerobic respiration, per molecule of glucose. The waste product is lactic acid rather than carbon dioxide and water:
glucose → lactic acid (+ little energy)
Hence the correct option is A.
Question 9
1 / -0

Cranial nerves in frog are

A
12 pairs

B
9 pairs plus 1

C
10 pairs plus 1

D
10 pairs
Solution
Correct option: D
Explanation:
Cranial nerves are the nerves that link the brain to different parts of the head, spine and trunk.
Frogs have 10 pairs of cranial nerves while humans have 12.
Olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, auditory, glossopharyngeal and vagus are the 10 pairs of cranial nerves in frogs.
Hence, cranial nerves in frogs are "10 pairs".
Question 10
1 / -0

The tissue that attaches muscles to the bones is _____.

A
Cartilage

B
Tendon

C
Ligament

D
Blood

Solution

Cartilage has widely spaced cells and interspersed in a matrix made of proteins and sugars. It covers the ends of bones at the joint.
Tendon is a tough fibrous connective tissue, which connects muscle to bone.
Ligament is tough elastic connective tissue, which connects bone to another bone.
Blood flows throughout the body and transports gases, nutrients, digested food, hormones, etc. to different parts of the body. It also transports waste materials collected from various parts of the body.
Therefore, correct answer is option B.

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Structural Organisation in Animals Test - 34

Result

Structural Organisation in Animals Test - 34

Score

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SHARING IS CARING

Question 1

Frog

Rabbit

Cockroach

Earthworm

Solution

Question 2

Iris of eye

Uterus

Bronchi

All of the above

Solution

Question 3

Pheretima posthuma

Lumbricus terrestris.

Both of the above

None of the above

Question 4

Cell metabolites

Fat granules

Ribosomes

Mitochondria

Solution

Question 5

Ascaris

Pheretima

Periplaneta

Hydra

Solution

Question 6

Skeletal muscle

Cardiac muscle

Smooth muscle

All of the above

Solution

Question 7

Voluntary action of striated muscles

Voluntary action of unstriated muscles

Involuntary action of striated muscles

Involuntary action of unstriated muscles

Solution

Question 8

In the muscles, anaerobic respiration produces lactic acid.

In the muscles, anaerobic respiration produces carbon dioxide, water and oxygen.

In muscles, Aerobic respiration produces lactic acid.

None of the above.

Solution

Question 9

12 pairs

9 pairs plus 1

10 pairs plus 1

10 pairs

Solution

Question 10

Cartilage

Tendon

Ligament

Blood

Solution

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