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

The lack of symptoms of aging in an organism is due to

  1. apoptosis

  2. programmed cell-death

  3. cellular senescence

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

It is defined as the lack of symptoms of aging in an organism. Particularly negligibly senescent animals do not have measurable reductions in their reproductive capability with age.

Multiple choice

Pick out the FALSE statement regarding the care of eggs by animals.

  1. Female cyclops carries its eggs in the ovisacs.

  2. Female midwife toad carries its eggs on the thighs.

  3. Male hippocampus carries its eggs in its brood pouch.

  4. Female dusky salamander carries its egg cluster packed around neck.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

No, the male midwife toad carry their eggs on thighs (hind limbs).

Multiple choice

Which of the following characterstics indicates that a cell is prokaryotic?

  1. The cell has vacuoles.

  2. An organised nucleus is absent.

  3. Membrane bound cell organelles are present.

  4. Two to several DNA molecules are present.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

No nucleus is present in a prokaryotic cell and hereditary material lies free in cytoplasm. In eukaryotic cell, an organised nucleus is present.

Multiple choice

Which of the following phenomena do bats and dolphins follow to search for their prey?

  1. Refraction of sound

  2. Smell of blood

  3. Scattering of sound

  4. Echo location

  5. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Echolocation is the system bats and marine mammals use to navigate in the dark when hunting prey. Equivalent to sonar or radar, echolocation is the production of sound used for communication. Echolocation is the use of ultra-high frequency sounds for navigation and locating prey.

Multiple choice

Which of the following feature do birds have due to which they are able to swim in water?

  1. Webbed feet

  2. Broad wings

  3. Long beaks

  4. Toes with claws

  5. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Webbed feet or toes have a piece of skin between the toes. Sea fowl is the name for birds with webbed feet that are frequent visitors to the coast and the open ocean. These birds include seagulls, pelicans, and albatross. These birds can also be called sea birds, or aquatic birds.

Multiple choice

Plants like ______, algae and fungi exhibit symbiotic relationship.

  1. lichen

  2. virus

  3. bacteria

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

Lichens are composite organisms formed from a symbiotic partnership between fungus and algae (or cyanobacteria). The fungal partner provides structure while the photosynthetic partner produces food through photosynthesis.

Multiple choice

Which of the following pairs belongs to the same type?

  1. Euglena and paramecium

  2. Bacteria and fungi

  3. Blue green algae and euglena

  4. Paramecium and bacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Yes, this is correct as this is the only pair in which both are eukaryotes. Their cells have a well organized nucleus.

Multiple choice

Prokaryotic cell does not possess

  1. Cell wall

  2. Plasma membrane

  3. Nuclear membrane

  4. Ribosomes

  5. Chromosomes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Prokaryotic cell does not possess nuclear membrane because nucleus is absent in prokaryotic cell.

Multiple choice

Which of the following is not a variant in humans?

  1. Shape of hair

  2. Number of forelimbs

  3. Attached ear lobes

  4. Rolling of tongue
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The number of forelimbs (arms) in humans is not a variant - all normal humans have exactly two forelimbs. The other options are genuine variations: hair shape (curly/straight), ear lobe attachment (attached/free), and tongue rolling ability (able/unable) are all classic examples of inherited human variations that Mendelian genetics helps explain. These traits vary between individuals while forelimb number is constant.

Multiple choice

__________ can change their sex during their life.

  1. Humans

  2. Birds

  3. Lizards

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

Many snail species are sequential hermaphrodites, meaning they can change their sex during their lifetime in response to environmental conditions or population needs. This ability is extremely rare among vertebrates like humans, birds, and lizards.