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

What does locomotion indicate in living things?

  1. Reproduction of young ones

  2. Breathing in of fresh air

  3. Movement from one place to another

  4. Adaptation to the environment

  5. Circulation of blood
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Locomotion refers to the forms of movement that animals naturally use like flying, swimming, gliding, galloping, hopping, etc.

Multiple choice

The evolutionary fact that the warm blooded animals residing in the colder regions possess larger body parts than their counterparts in the warmer regions can be explained by _____________.

In terms of evolution, associations of body size and of body temperature with the fitness have complex relationships for animals.

  1. Gloger’s rule

  2. Dollo’s rule

  3. Bergman’s rule

  4. Cope’s rule

  5. Allen’s rule
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bergman’s rule states that the warm blooded animals residing in the colder regions possess larger body parts than those in the warmer regions.

Multiple choice

Why do we kill snakes?

  1. They are poisonous

  2. To earn money by selling their skin

  3. Both 1 and 2

  4. Law passed by the government
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Both (1) and (2): People kill snakes because they are poisonous and some people sell their skin at high price.

Multiple choice

Hydra shows ______ movement.

  1. flagellar

  2. amoeboid

  3. ciliary

  4. somersault

  5. Whip like
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydra uses its tentacles to move, and it shows both looping and somersault movement. 

Multiple choice

Consider the following statements:1. Organisms adapted to living in very high temperatures are called thermopile organisms.

  1. Pasteurization of milk (the process that limits the spread of milk-borne infectious diseases) takes place at 100oC.

Which of the given statements is/are correct?

  1. Only (1)

  2. Only (2)

  3. Both (1) and (2)

  4. Neither (1) nor (2)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

(i) Statement (1) is correct. Yes, thermophilic organisms are those organisms, which are adapted to living in high temperatures. (ii) Statement (2) is incorrect. Pasteurization of milk takes place at 60oC. At this temperature, it limits the growth of milk borne infectious diseases.

Multiple choice

If a male white-crowned sparrow is hatched and reared in separation, but at the time of crucial imprinting period (10-50 days after hatching) is allowed to hear a male’s song from any various sparrow species, then at maturity, the separated white-crown male will

  1. sing a specific song that is not sung by any other species

  2. not sing at all

  3. sing a song of its own white-crown species

  4. sing a song of the species to which he listened during the crucial period

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

At maturity, the separated white-crowned male will sing a specific song that it does not learn directly from its father, but rather from the generalised song environment of its natal neighborhood. 

Multiple choice

Example of negative feedback loop in animals is

  1. salivation of mouth at the sight of food

  2. secretion of sweat gland and constriction of skin blood vessels when it is too hot

  3. secretion of tears after any dust particle falls into the eye

  4. constriction of skin, blood vessels and skeletal muscles when it is too cold

  5. closing of eyelid on sudden exposure to intense light
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Negative feedback occurs when the result of a process influences the operation of the process itself in such a way so as to reduce changes. Negative feedback tends to make a system self-regulating, i.e. it can produce stability and reduce the effect of fluctuations. Negative feedback loops where just the right amount of correction is applied in the most timely manner. It can be very stable, accurate and responsive.

Multiple choice

Choose the correct statement with respect to unicellular organisms.

  1. In unicellular organisms, tissues work in coordination to perform different functions.

  2. Unicellular organisms do not require food.

  3. Unicellular organisms respire and reproduce.

  4. All unicellular organisms move by cilia.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Unicellular organisms respire and reproduce.

Multiple choice

Which of the following cells is not eukaryotic?

  1. Onion cell

  2. Cheek cell

  3. Fungal cell

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

Bacteria are called prokaryotes as they do not have a well-defined nuclear membrane around the nucleus of their cell.