Biology · Science General

Diversity in Living Organisms

3,829 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

The term 'nucleoid' is related with

  1. plant's nucleus

  2. bacterial nucleus

  3. animal's nucleus

  4. bird's nucleus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bacterial nucleus is termed as 'nucleoid' as its nucleus does not contain a well defined nuclear membrane.

Multiple choice

Living organisms can be divided into two main groups, i.e. plants and animals. Animals can be divided into two main sub-groups. Animals without backbones are called (1) _______ and those with backbones are called (2) _______.

  1. vertebrates, invertebrates

  2. invertebrates, vertebrates

  3. ambhibians, mammals

  4. fish, reptiles

  5. fish, mammals
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Animals without backbones are called invertebrates and those with backbones are called vertebrates.

Multiple choice

Which of the following describes a bird?

  1. Cold-blooded, lives in water, has gills and paired fins.

  2. Cold-blooded, dry scaly waterproof skin, lays eggs on land.

  3. Warm-blooded, lays eggs on land, covered in feathers.

  4. Warm-blooded, body covered with hair, gives birth to young ones which are fed on milk from special glands.

  5. Cold-blooded, lays eggs in water, spends first part of life in water and has gills, slimy skin, lives on land in adult life breathing with lungs.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, all these feature are found in a bird.

Multiple choice

Which of the following describes a newt?

  1. Warm-blooded vertebrates

  2. Cold-blooded vertebrate

  3. Invertebrates without jointed legs

  4. Invertebrate with jointed legs

  5. Invertebrates with shells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Newt is an ambhibian and ambhibians are cold-blooded vertebtrates.

Multiple choice

Which of the following statements is true about non-poisonous snakes?

  1. Non-poisonous snakes are not reptiles.

  2. Non-poisonous snakes have only two lungs.

  3. Non-poisonous snakes donot lay eggs.

  4. Non-poisonous snakes donot have dry and scaly skin.

  5. Non-poisonous snakes are warm-blooded.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is right about non-poisonous snakes.

Multiple choice

Which of the following is the most appropriate statement about habitat of microorganisms?

  1. Microorganisms can live in hot springs and deserts to marshy lands only.

  2. They are found only inside the body of other animals including humans.

  3. They can survive under all types of environment and also found inside the bodies of the animals including human beings, and can live freely also.

  4. They live free and independent life, and do not form colonies.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Microorganisms are such a group of organisms which are omni-present, from oceans to deserts, from -25oC to +25oC, inside human body or in the air.

Multiple choice

Which of the following multicellular algae form colonies?

  1. Volvox

  2. Chlorella

  3. Chlamydomonas

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

Multicellular algae generally live in two forms, either isolated or in colonies. Volvox is the only example of multicellular algae out of the given four, which lives by forming colonies whereas the other three stay isolated.

Multiple choice

Which of the following is not a reason due to which multicellular organisms need more oxygen than unicellular organisms?

  1. The rate of respiration is much higher in multicellular organisms than in unicellular organisms.

  2. Multicellular organisms are made of billions of cells.

  3. Cells are not directly in contact with the environment or air.

  4. In blood, oxygen is slowly taken up by haemoglobin.

  5. The absorbed oxygen is rapidly transported to all the cells.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In multicellular organisms the blood oxygen is very quickly taken up by haemoglobin in the red blood cells making the process of diffusion faster.

Multiple choice

Which of the following is a set of homologous organs?

  1. Hind limbs of birds and reptiles

  2. Wings of bat and bird

  3. Pectoral fins of fish and wings of bird

  4. Wings of bat and locust
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Homologous organs have similar embryonic origin and anatomical structure but perform different functions. Hind limbs of birds and reptiles share common ancestry and bone structure despite birds using them for perching/walking and reptiles for locomotion. Wings of bat and bird (B) are analogous - similar function but different origin. Pectoral fins of fish and bird wings (C) are analogous. Wings of bat and locust (D) are analogous.

Multiple choice

A link between the living and non-living is provided by

  1. bacteria

  2. coacervates

  3. viruses

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

Viruses exhibit characteristics of both living and non-living things. They have genetic material and can evolve like living organisms, but cannot reproduce without a host cell and don't carry out metabolic processes like living things. Bacteria, amoeba are fully living. Coacervates were hypothetical prebiotic structures, not actual organisms.