Tag: diversity in living world

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Questions Related to diversity in living world

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

How many features listed are exhibited by flatworms(A) and bacteria(B)?
(i) Growth by increases in mass only
(ii) Regeneration
(iii) Self-consciousness
(iv) Anabolism and catabolism
(v) Binary fission.

  1. A-(i, ii, iii, iv), B-(i, iii, iv)

  2. A-(ii, iv), B-(iv, v)

  3. A-(ii, iii, iv), B-(i, iv, v)

  4. A-(i, ii), B-(iii, iv, v)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Flatworms (A) exhibit growth, regeneration, and metabolism (anabolism/catabolism). Bacteria (B) exhibit growth, metabolism, and binary fission. Neither exhibits self-consciousness.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Body cavity of animals derived from Blastocoel is known as

  1. Pseudocoelom

  2. Schizocoelom

  3. Enterocoelom

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

Schizocoelom develops as a split in the mesoderm, e.g.-Arthropods, Annelids, and Molluscs. Enterocoelom is derived from the wall of embryonic gut, e.g.-Echinoderms, and Chordates. Haemocoel is the blood-filled cavity of arthropods. Pseudocoelom is also known as a false cavity.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Which of the following nematodes are parasitic to humans? 

  1. Ascaris

  2. Earthworm

  3. Both A and B

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

Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. These are long, slender, tapered at both the ends. The body is covered with a thick cuticle secreted by a cellular or syncytial epidermis. The life cycle of Ascaris involves only one host. The man is a definitive host for worm and is present in the gastrointestinal tract and fecal matter. Hence, option A is the correct answer. 

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

_________ is a parasite which also causes waterborne disease.

  1. Roundworm

  2. Tapeworm

  3. Both A and B

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

Important class of waterborne diseases are caused by metazoan parasites. Typical examples include certain Nematode, that is to say "roundworms". As an example of waterborne Nematode infections, one important waterborne nematodal disease is Dracunculiasis. It is acquired by swallowing water. Therefore, the correct answer is option A.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

The eggs of which parasite are bile stained

  1. Ascaris lumbricoides

  2. Ancylostoma duodenale

  3. Enterobius vermicularis

  4. Necator Americans
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
the fertilized eggs of parasite Ascaris lumbricoides is rounded and has a mineral layer that is often stained by bile as they pass through the excreta
So, the correct answer is 'Ascaris lumbricoides'
Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Animal of which phylum have hooks and suckers and are endoparasite on other animals?

  1. Platyhelminthes

  2. Annelida

  3. Ascheminthes

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

Platyhelminthes or flatworms are dorsoventrally flattened and bilaterally symmetrical worms. They are endoparasites and have parasitic adaptations like hooks and suckers.

So the correct option is A.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Match each item in Column I with appropriate one/s in Column II

Column I Column II
A Edward Jenner I Heredity
B Chromosomes II Budding
C Hydra III Protein biosynthesis
IV Smallpox vaccine
V Cell membrane
VI Binary Fission
VII Antibiotics

Select the correct alternative:-

  1. A-VII, B-I, C-II

  2. A-IV, B-I, C-II

  3. A-VII, B-V, C-VI

  4. A-IV, B-II, C-VI
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The English scientist Edward Jenner (1749 - 1823), regarded as the "Father of Immunology", first introduced the "Smallpox vaccine" in 1796. In fact, the Smallpox vaccine was the first successful vaccine to be invented. Smallpox is a serious contagious disease, caused by the Variola virus. The infected people can have a high fever, body ache, vomiting, and distinctive skin rashes. The smallpox vaccine comprises of live "Vaccinia virus", which quite similar to the Smallpox virus. Jenner's invention eventually led to worldwide immunization by the Smallpox vaccine and eradication of the infectious disease. 
  • Heredity refers to the passing of genetic information from parents to their offspring. Genes are the basic structural and functional units of heredity. In eukaryotic organisms, the Genes remain packaged into large nuclear components, called the Chromosomes. Therefore, each Chromosome comprises many genes. That is why the chromosome is regarded as the "carrier of heredity".   
  • The Coelenterate animal Hydra can reproduce either asexually or sexually. Sexual reproduction in Hydra takes place through the formation of gametes. Asexual reproduction in Hydra is usually seen in the month of summer, especially when the animal is healthy and well-fed. Hydra reproduces asexually by means of Budding. Repeated multiplication of its body-wall cells, results in a bulging appearance near the middle, or the basal part of its body. This bulge grows as a Bud. The wall of the Bud is like an extension of the epidermis and gastrodermis the parent Hydra, while the lumen of the Bud is in continuation with the parent's gastrovascular cavity. A fully grown up Bud finally detaches from the parent's body and gradually develops into an adult Hydra.
Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

If a starfish is cut into pieces, each piece grow into a complete animal. The process is called-

  1. Regeneration

  2. Reproduction

  3. Healing of wounds

  4. Growth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The Starfish or Sea Stars (viz. Asterias, Linckia, Asterina, etc.) are free-living marine Echinoderm animals. They are found in sandy or muddy sea bottoms, or over the rocks, and shells. Some species of Sea Stars have a great power of Regeneration. By this method, they can re-grow an amputated limb or some other body parts. When any arm of a Starfish gets injured, the animal casts off its own arm - a process called Autotomy. Then by the process of Regeneration, the Starfish can re-grow a completely new perfect arm in the place of the injured one. Even, in some Sea Star (viz. Linckia), an arm can even regenerate a complete animal.
Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

The presence of mutable collagenous tissue is an important feature of :

  1. Annelida

  2. Echinodermata

  3. Porifera

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

Mutable collagenous tissue, also known as catch connective tissue, is a unique feature found exclusively in echinoderms. It allows them to rapidly and reversibly change their mechanical properties under nervous control.