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 the following options is incorrect?

  1. Animals that eat flesh are called carnivores.

  2. Animals that eat plants are called herbivores.

  3. Cat, human and crow are called omnivores.

  4. Hen and sheep are egg yielding animals.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Animals, according to their dietary habits, are of three types: flesh eating called carnivores, plant eating called herbivores, and both plant and flesh eating called omnivores. So, statements given in options (1) - (3) are correct. Hen is though a source of eggs but sheep is a wool yielding animal and thus, option (4) is incorrect. 

Multiple choice

Squirrel, parrot and deer are called herbivores because they are

  1. plant eaters

  2. insect eaters

  3. flesh eaters

  4. fish eaters

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

Animals according to their dietary habits are of three types; flesh eating are called carnivores, plant eating are called herbivores and both plant and flesh eating are called omnivores. 

Multiple choice

Match the following:

 
a. Bacteria 1. They do not have chlorophyll and do not show photosynthesis.
b. Fungi 2. They have cell walls, but do not have an organised nucleus and other structures.
c. Algae 3. They are plant-like organisms containing chlorophyll and producing food by photosynthesis.

  1. a - 3, b - 1, c - 2

  2. a - 2, b - 1, c - 3

  3. a - 1, b - 2, c - 3

  4. a - 1, b - 3, c - 2

  5. a - 2, b - 3, c - 1
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Bacteria have cell walls, but do not have an organised nucleus and other structures. Fungi do not have chlorophyll and do not show photosynthesis. Algae are plant-like organisms containing chlorophyll and producing food by photosynthesis.

Multiple choice

Which of the following sets represents filamentous bacteriophages?

  1. M13 phage, T12 phage, fd phage

  2. M13 phage, f1 phage, fd phage

  3. T2 phage, f1 phage, fd phage

  4. M13 phage, MS2 phage, f1 phage

  5. MS2 phage, T12 phage, f1 phage
Reveal answer Fill a bubble to check yourself
B 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

Which of the following statements is incorrect for Agaricus?

  1. The cells of opposite strains show somatogamy to form the dikaryotic mycelium.

  2. Hyphae are interwoven into thick cords known as Rhizomorphs.

  3. Agaricus is a genus of mushrooms containing only edible species

  4. Clamp connections are observed.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Agaricus is a genus of mushrooms containing both edible and poisonous species

Multiple choice

Which of the following is not a characteristic of viruses?

  1. They exist as obligate intra-cellular parasites.

  2. Their outer shell is called capsid.

  3. They replicate, but do not grow.

  4. Capsid is mostly made of polysaccharides.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Viruses are obligate intracellular parasites (true), have an outer shell called capsid (true), and replicate but don't grow/metabolize independently (true). However, capsids are made of protein subunits (capsomeres), NOT polysaccharides, making option D the correct 'not a characteristic' answer.

Multiple choice

What helps the snakes receive advance warning is their sensitivity to

Directions: Read the following passages and answer the question that follows.

PASSAGE – II
On a surface which is free from obstacles, such as a clear road or a path, only two or three species of snakes can hope to catch up with a human being, even if they are foolish to try. A snake seems to move very fast but its movements are deceptive. In spite of the swift, wave-like motions of its body, the snake crawls along the ground at no more than the speed of man’s walk. It may, however, have an advantage inside a jungle, where the progress of a man is obstructed by thorny bushes. But in such places, the footsteps of a man are usually more than enough to warn snakes to keep away. Although they have no ears of the usual kind, they can feel slight vibrations of the ground through their bodies, and thus get an early warning of danger.

 

  1. obstacles in the path

  2. smell of other beings

  3. sounds made by other beings

  4. movements of other beings
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

"the footsteps of a man are usually more than enough to warn snakes to keep away"

Multiple choice

Which among the following statements is correct about blue-green algae?

  1. They are photosynthetic autotrophic bacteria.

  2. They are chemosynthetic autotrophic bacteria.

  3. They are heterotrophic bacteria.

  4. They are considered as archaebacteria.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

They are unicellular, colonial or filamentous, marine or terrestrial algae. Blue-green algae have chlorophyll, similar to green plants and hence, are photosynthetic autotrophs.

Multiple choice

Which among the following can be excluded from the general characteristics of the kingdom Monera?

  1. The gram negative bacteria have an extra layer of glycol on the outside of the cell wall.

  2. Sexual reproduction is also seen in the kingdom Monera.

  3. Monerans may be obligate aerobes or obligate anaerobes.

  4. Their DNA is in double stranded form.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The gram negative bacteria has an extra layer of lipid on the outside of the cell wall and appears pink during the Gram staining procedure.

Multiple choice

Which among the following can be excluded from the general characteristics of the kingdom Monera?

  1. The gram negative bacteria has an extra layer of glycol on the outside of the cell wall.

  2. Sexual reproduction is also seen in kingdom monera.

  3. Monerans may be obligate aerobes or obligate anaerobes .

  4. DNA is in double stranded form.

  5. The gram positive bacteria's cell wall is made up of protein-sugar complex.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The gram negative bacteria have an extra layer of lipid on the outside of the cell wall and appear pink during the gram staining procedure.

Multiple choice

What are prokaryotes?

  1. The organisms having cells without nuclear membrane

  2. The organisms made of more than one cell

  3. The organisms having cells with a well-organised nucleus with a nuclear membrane

  4. The organisms that are single-celled

  5. None of these

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

The cells having nuclear material without nuclear membrane are termed as prokaryotic cells and the organisms with this kind of cells are called prokaryotes.