Biology · Science General

Diversity in Living Organisms

3,323 Questions

The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

Multiple choice

Which of following sets represents filamentous bacteriophages only?

  1. T2 phage, f1 phage, fd phage

  2. M13 phage, MS2 phage, f1 phage

  3. M13 phage, T12 phage, fd phage

  4. MS2 phage, T12 phage, f1 phage

  5. M13 phage, f1 phage, fd phage
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

M13 is a filamentous bacteriophage composed of circular single stranded DNA (ssDNA). Filamentous bacteriophage fd is a type of filamentous bacteriophage known to infect Escherichia coli. Bacteriophage f1 is structurally classified as a class I filamentous phage.

Multiple choice

Directions: Choose the correct option to answer the following question.

Which of the following is not true about the camel's hump?

Reading Passage: CAMEL
Directions: Read the passage carefully:
The camel is the oldest of domestic animals. It has been used for thousands of years, by the desert people of Africa and Asia to supply many of their needs. On the fertile edges of the desert, camels pull ploughs, turn wheels to irrigate the fields and carry goods to the market. In the desert itself, they are still almost the only means of transport. They supply food, milk and clothing in the form of wool and leather.
This useful animal is well adapted to life in harsh, arid lands. The Arabian camel has one hump; the Bactrian camel has two. The hump is, in fact, a store of fat which is used as a source of energy when food and water are scarce. When it does drink, the camel can take up to 100 litres of water in ten minutes.
The camel has broad, soft feet for a steady grip in the sand. A thick skin protects it from the fierce daytime sun and bitterly cold nights. The camel's eyes have three eyelids to help keep out sand; its ears and nose are also adapted to keep out sand storms. Camels stand about two meters high at the shoulder and weigh 500-800 kilos.
Often called the ship of desert; they can carry loads of 200 kilos and more, travelling up to 16 kilometres a day. Camels eat grass, dates and grain when available. Deep in the desert they survive on dry leaves, seeds and oats.

  1. It stores water.

  2. It stores body fat.

  3. It contains the energy source that the camel uses in the absence of food and water.

  4. It helps the animal to adapt to different conditions.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The hump is, in fact, a store of fat which is used as a source of energy when food and water are scarce. It stores water, is not correct. The other choices are true.

Multiple choice

Directions: Choose the correct option to answer the following question.

Which of the following is a way in which a camel can help us in agriculture?

Reading Passage: CAMEL
Directions: Read the passage carefully:
The camel is the oldest of domestic animals. It has been used for thousands of years, by the desert people of Africa and Asia to supply many of their needs. On the fertile edges of the desert, camels pull ploughs, turn wheels to irrigate the fields and carry goods to the market. In the desert itself, they are still almost the only means of transport. They supply food, milk and clothing in the form of wool and leather.
This useful animal is well adapted to life in harsh, arid lands. The Arabian camel has one hump; the Bactrian camel has two. The hump is, in fact, a store of fat which is used as a source of energy when food and water are scarce. When it does drink, the camel can take up to 100 litres of water in ten minutes.
The camel has broad, soft feet for a steady grip in the sand. A thick skin protects it from the fierce daytime sun and bitterly cold nights. The camel's eyes have three eyelids to help keep out sand; its ears and nose are also adapted to keep out sand storms. Camels stand about two meters high at the shoulder and weigh 500-800 kilos.
Often called the ship of desert; they can carry loads of 200 kilos and more, travelling up to 16 kilometres a day. Camels eat grass, dates and grain when available. Deep in the desert they survive on dry leaves, seeds and oats.

  1. Pulling ploughs

  2. Carrying goods

  3. Storing water

  4. Supplying leather
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

On the fertile edges of the desert, camels pull ploughs, turn wheels to irrigate the fields and carry goods to the market. Only choice (1) is helpful in agriculture.

Multiple choice

Directions: Choose the correct option to answer the following question.

Which of the following helps the camel to avoid the depositing of sand?

Reading Passage: CAMEL
Directions: Read the passage carefully:
The camel is the oldest of domestic animals. It has been used for thousands of years, by the desert people of Africa and Asia to supply many of their needs. On the fertile edges of the desert, camels pull ploughs, turn wheels to irrigate the fields and carry goods to the market. In the desert itself, they are still almost the only means of transport. They supply food, milk and clothing in the form of wool and leather.
This useful animal is well adapted to life in harsh, arid lands. The Arabian camel has one hump; the Bactrian camel has two. The hump is, in fact, a store of fat which is used as a source of energy when food and water are scarce. When it does drink, the camel can take up to 100 litres of water in ten minutes.
The camel has broad, soft feet for a steady grip in the sand. A thick skin protects it from the fierce daytime sun and bitterly cold nights. The camel's eyes have three eyelids to help keep out sand; its ears and nose are also adapted to keep out sand storms. Camels stand about two meters high at the shoulder and weigh 500-800 kilos.
Often called the ship of desert; they can carry loads of 200 kilos and more, travelling up to 16 kilometres a day. Camels eat grass, dates and grain when available. Deep in the desert they survive on dry leaves, seeds and oats.

  1. Hump

  2. Broad soft feet

  3. Thick skin

  4. Its eyelids
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The camel's eyes have three eyelids to help keep out sand; its ears and nose are also adapted to keep out sand storms. The answer is (4).

Multiple choice

Directions: Choose the correct option to answer the following question.

Which of the following is an example of adaptation of an organ?

Reading Passage: CAMEL
Directions: Read the passage carefully:
The camel is the oldest of domestic animals. It has been used for thousands of years, by the desert people of Africa and Asia to supply many of their needs. On the fertile edges of the desert, camels pull ploughs, turn wheels to irrigate the fields and carry goods to the market. In the desert itself, they are still almost the only means of transport. They supply food, milk and clothing in the form of wool and leather.
This useful animal is well adapted to life in harsh, arid lands. The Arabian camel has one hump; the Bactrian camel has two. The hump is, in fact, a store of fat which is used as a source of energy when food and water are scarce. When it does drink, the camel can take up to 100 litres of water in ten minutes.
The camel has broad, soft feet for a steady grip in the sand. A thick skin protects it from the fierce daytime sun and bitterly cold nights. The camel's eyes have three eyelids to help keep out sand; its ears and nose are also adapted to keep out sand storms. Camels stand about two meters high at the shoulder and weigh 500-800 kilos.
Often called the ship of desert; they can carry loads of 200 kilos and more, travelling up to 16 kilometres a day. Camels eat grass, dates and grain when available. Deep in the desert they survive on dry leaves, seeds and oats.

  1. When camel drinks, it drinks a lot.

  2. Camels can carry loads up to 200 kilos.

  3. The camel has broad and soft feet to give it a firm grip in the sand.

  4. The camel is a strong animal and can travel up to 16 kilometres a day.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The camel has broad, soft feet for a steady grip in the sand. Only choice (3) is an example of adaptation to desert conditions.

Multiple choice

What is the purpose of pectoral fins?

Directions: Read the passage and answer the question that follows.

The great white shark is one of the most recognisable sharks in the world. The only shark larger than a great white is the whale shark. Great white sharks have been found in each of the world's oceans. Even though they have been spotted in waters as shallow as three feet (one metre) deep, these sharks spend most of their time in deep coastal waters. One of the most noticeable features of the great white is the dorsal fin which rises out of the water when a great white swims near the surface of the  ocean. The fins on other side of the shark are called pectoral fins and they help to direct the shark closer to the surface or deeper into sea. The shark’s tail is powered by very strong muscles. It sweeps the tail side to side and can reach speeds of up to 15 miles per hour (24 kilometres per hour). White sharks have never been kept in captivity for longer than 7 months; so scientists are unsure how long they live. It is believed that their life span is almost 30 years. The great white shark is the most feared predator of the ocean, by people and by sea creatures alike!

  1. To help it in stay on the surface

  2. To help its movement in deep waters

  3. To help it gain speed

  4. To help it remain near the surface
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

These fins ‘direct the shark closer to the surface or deeper into sea’. ‘Direct’ indicates movement, not stay.

Multiple choice

The observation of the recent studies about tropical birds is that

  1. compass sense alone cannot explain how birds navigate the ocean

  2. magnetite found in the bird�s head aids them in navigation

  3. migrants determine their geographic position on Earth by celestial navigation

  4. birds can keep trail of time without any sensory cues from the external world
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

�Recent research suggests that cells in the bird's head contain magnetite, an iron oxide crystal that aligns with magnetic north like a tiny compass needle.� gives us the answer.

Multiple choice

Protozoa have a limited size because

  1. they have an intestine which does not allow higher absorption

  2. they have degenerated growth hormones

  3. they have a permeable limiting membrane which prevents the animals from growing beyond a certain size

  4. they are alive for a very less time period
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Protozoa are a cellular animals of small size, they have a permeable limiting membrane which prevents the animals from growing beyond a certain size, and it precludes the formation of structures which will give strength and rigidity necessary for a large size. 

Multiple choice

Which one of the following is an example of eumetazoans?

  1. Dictyostelium

  2. Hydra

  3. Sponges

  4. Volvox
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Eumetazoans are multicellular animals with true tissues, which distinguishes them from parazoans like sponges. Hydra belongs to the phylum Cnidaria, making it a classic example of an eumetazoan.

Multiple choice

Which one of the following is characteristic of deuterostomes?

  1. Radially symmetric body

  2. Bilaterally symmetric body

  3. Presence of well-defined digestive system

  4. Formation of anus from blastopore
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Deuterostomes are characterized by radial cleavage, enterocoelous coelom formation, and the development of the blastopore into the adult anus, whereas protostomes develop the mouth from the blastopore.