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 zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

A living organism can be unexceptionally differentained from a non-living thing on the basis of its ability for....

  1. Reproduction

  2. Growth and movement

  3. Responsiveness to touch

  4. Interaction with environment and progressive evolution
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Reproduction can or cannot be criteria because the childless couple is there who are living. evolution need not always be progressive. Growth is also shown in a deposition if materials and movement are exhibited by nonliving things.
So, the correct option is 'Responsiveness to touch'.
Multiple choice audible, infra and ultra sound with its application study of sound physics

It has been seen that the behaviour of animals becomes unusual just before the tremor is felt. What is the reason behind this?

  1. because animals are able to detect infrasonic waves produced at the time of tremor.

  2. because animals are able to detect ultrasonic waves produced at the time of tremor.

  3. because animals are able to detect audible waves produced at the time of tremor.

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

Has been seen that the behaviour of animals becomes unusual just before the tremor is felt. This is because animals are able to detect infrasonic waves produced at the time of tremor.
Infrasonic waves are waves of frequency less than 20Hz.

Multiple choice audible, infra and ultra sound with its application study of sound physics

How the bats can locate their prey?

  1. The ultrasonic waves produced by a bat spread out.

  2. The ultrasonic waves after reflection from a prey reach the bat.

  3. both

  4. none
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bats can produce ultrasonic waves by flapping their wings.
They can also detect these waves.these waves produced by the bats after reflection from the obstacles like building guide them to  remain away from the obstacles during night with the help of ultrasonic waves.

Multiple choice biology adaptation plant adaptation adaptation in plants plant habitat

Which of the following is incorrect match?

$1$) Aquatic annelids possess lateral appendages which help in swimming Parapodia
$2$) Balance organs in aquatic and Aurelia Arthropods Statocyst
$3$) Spiders spins web by using Spinnerets
$4$) The body is supported by a proteinaceous skeleton in porifera Spicules
  1. $1$
  2. $2$
  3. $3$
  4. $4$
Reveal answer Fill a bubble to check yourself
D Correct answer
Multiple choice biology adaptation plant adaptation adaptation in plants plant habitat

Besides pneumatic bones, another useful flight adaptation in birds is

  1. Syrinx

  2. Pygostyle

  3. Furcula

  4. Quill feathers
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Besides pneumatic bones, another useful flight adaptation in birds is quill feathers. Each quill feather has a central stem or scapus. It is divided into a lower hollow part called the quill or calamus and a solid upper part termed rachis. Small filaments or barbs are attached to rachis. The barbs remain attached with one another to form a continuous blade for striking the air in flight.
So, the correct answer is 'Quill feathers'.
Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

Common name of Petromyzon is

  1. Lancet

  2. Hagfish

  3. Acornworm

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

Sea Lamprey or Petromyzon is an agnathan. It is a marine organism. It lacks jaws and resembles an eel. It has a sucker-like mouth that is involved in filter feeding. It has seven brachial openings behind its eyes. They are anadromous and are usually found at depths of around 4000 m and can tolerate temperature ranges from 1.0 and 20 °C.

So, the correct answer is 'Lamprey'.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

Vertebrates without jaws belong to 

  1. Urochordata

  2. Hemichordata

  3. Agnatha

  4. Gnathostomata
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Agnathans are basically primitive jawless fishes. They include lampreys and hagfishes. They usually have soft, cylindrical bodies that lack scales. In some species, separate external gill slits are present, while they open via a single pore in others. They have a suctorial or a filter-feeding mouth and they lack jaws.

So, the correct answer is 'Agnatha'.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

The type of tail seen in Cyclostomata is 

  1. Isocercal.

  2. Homocercal.

  3. Heterocercal.

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

Cyclostomata is a group of chordates comprising of living jawless fishes, the lampreys, and hagfishes. Their tail is protocercal in cyclostomes, having a caudal fin extending around the end of the vertebral column. The protocercal tail is formed by the division of tail into two equal lobes supported by fins.

Hence, option D is correct.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

The larva of cyclostomates is known as 

  1. Lamprey

  2. Amphioxus

  3. Ascridian

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

Cyclostomata is a group of chordates that comprises the living jawless fishes, the lampreys, and hagfishes. They lay numerous eggs, about 1mm in diameter and lodge in the gravel around the nest. The egg hatches into an ammocoete larva, which is a blind, worm-like animal that burrows in the slit.

So, the correct answer is option D.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

In which one of the following jaws are absent?

  1. Petromyzon

  2. Hagfish

  3. Hippocampus

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Petromyzon is the sea lamprey, which lacks bony teeth and jaws. Hagfish is eel-shaped, slime-producing marine fish. Along with lampreys, they are jawless and are living fossils.

So, the correct answer is option D.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

The lamprey is included in same taxonomic class as 

  1. Anolis

  2. Myxine

  3. Ambystoma

  4. Neoceratodus

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lamprey and hagfish or Petromyzon and Myxine are both agnathans as they are jawless fishes. They are sometimes considered as the earliest vertebrates. They also lack paired fins or stomach. They have a pineal eye. The adults and larvae usually have a notochord.

So, the correct answer is 'Myxine '.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

Earliest jawed vertebrates were

  1. Ostracoderms

  2. Placoderms

  3. Crossopterygians

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

Vertebrates are the subphylum of a Chordata. Placoderms were among the first jawed fish. The jaws are considered to evolve from the gill arches. Placoderms are the extinct class of armoured prehistoric fishes, known from fossils, which lived from the Silurian to the end of the Devonian period. Their head and thorax were covered by articulated armoured plates and the rest of the body was scaled or naked.

So, the correct answer is option B.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

Lamprey (Petromyzon) is included in 

  1. Gnathostomata.

  2. Cyclostomata.

  3. Chondrichthyes.

  4. Osteichthyes.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Lampreys are one of the jawless fishes of the order Petromyzontiformes. Petromyzon is the scientific name of the sea lamprey. Chordates are characterized by the presence of notochord. Cyclostomata is a type of Chordate, that comprises the living jawless fishes, like the lampreys and hagfishes. It is long and slender snake-like organism. This organism is not called as the true fish. The organism lacks the paired fins. The organism has well developed dorsal and ventral fin folds. These fin folds help in swimming and locomotion. The adult stage is characterized by a toothed, funnel-like sucking mouth.
Thus, the correct answer is option B.
Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

Which strucutres is seen cyclostomes?

  1. Pineal eye

  2. Jaws

  3. Pectoral fin

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In cyclostomes, the pineal gland is a photoreceptor. The endocrine nature of the gland's function has not been definitely established. As it's activity diminishes with age, the gland turns into rudimentary organ containing mineral deposits.

So, the correct answer is option A.