
The following organs appeared for the first time in amphibians are:
(a) Syrinx, Urinary bladder and Cloaca
(b) Tympanum, sternum and lacrimal glands
(c) Harderian glands, sebaceous glands and lacrimal glands
(d) Furcula, four chambered heart and palate
Answer
504.3k+ views
Hint:Amphibians are the first tetrapod animals;
they exhibit both terrestrial and aquatic modes of lifestyle.
Complete answer:Amphibians- as the name suggests can live in both water
and land.
They are the first Vertebrates that shifted from water to land.
So, they required structural changes in them that would support their lifestyle. In their ear, tympanum appeared for better sound reception.
Tympanum is also known as tympanic membrane or ‘eardrum’ and it covers the middle ear.
We know the frogs respire with the help of lungs.
To protect the lungs better and to provide easy breathing, sternum appeared.
Sternum basically is a flat bone residing in the central region of the chest; it connects to ribs and supports formation of a complete strong ribcage.
To support the terrestrial life, eyes needed better care; hence lacrimal glands also appeared for the first time.
Lacrimal glands are paired exocrine glands. These are located on the lacrimal fossa of orbit.
The secretion of this gland is tears. Tears protect the eyes and keep them moist enough (as we know, terrestrial lifestyle is drier).
So, the correct answer is ‘Tympanum, sternum and lacrimal glands’.
Note:Tympanum and tympanic bulla are different.
Tympanum is a membrane covering the middle ear and tympanic bulla or auditory bulla is a part of the temporal bone.
they exhibit both terrestrial and aquatic modes of lifestyle.
Complete answer:Amphibians- as the name suggests can live in both water
and land.
They are the first Vertebrates that shifted from water to land.
So, they required structural changes in them that would support their lifestyle. In their ear, tympanum appeared for better sound reception.
Tympanum is also known as tympanic membrane or ‘eardrum’ and it covers the middle ear.

We know the frogs respire with the help of lungs.
To protect the lungs better and to provide easy breathing, sternum appeared.
Sternum basically is a flat bone residing in the central region of the chest; it connects to ribs and supports formation of a complete strong ribcage.
To support the terrestrial life, eyes needed better care; hence lacrimal glands also appeared for the first time.
Lacrimal glands are paired exocrine glands. These are located on the lacrimal fossa of orbit.
The secretion of this gland is tears. Tears protect the eyes and keep them moist enough (as we know, terrestrial lifestyle is drier).
So, the correct answer is ‘Tympanum, sternum and lacrimal glands’.
Note:Tympanum and tympanic bulla are different.
Tympanum is a membrane covering the middle ear and tympanic bulla or auditory bulla is a part of the temporal bone.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
State and prove Bernoullis theorem class 11 physics CBSE

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

State the laws of reflection of light

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

1 Quintal is equal to a 110 kg b 10 kg c 100kg d 1000 class 11 physics CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells
