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 pairs of organs is analogous to each other?

  1. Leaf spines and leaf tendrils

  2. Forelimbs of a frog and human hand

  3. Flipper of a whale and leg of a horse

  4. Wings of an insect and wings of a bat

  5. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Boas and pythons have vestigial pelvis remnants, which are externally visible as two small pelvic spurs on each side of the cloaca.

Multiple choice

How do animals, fishes and plants live without air, under water?

  1. The plants and animals come to the surface in regular intervals

  2. Aquatic plants and animals do not need air to survive

  3. Water contains dissolved gases which enable them to live

  4. They survive because of the interdependence of plants and animals

  5. The temperature of the water is suitable for them
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, gases which are dissolved in the water, enable plants and animals to live.

Multiple choice

Circannual rhythm in an organism is A) regulated by photoperiod B) an innate character C) regulated by temperature D) an acquired character Which one of the following is/are correct?

  1. A and D

  2. B and C

  3. A and C

  4. A and B

  5. C and D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A circadian rhythm is any biological process that displays an endogenous oscillation of about 24 hours. These rhythms are driven by a circadian clock, and rhythms have been widely observed in plants, animals, fungi and cyanobacteria. The term circadian comes from the Latin circa, meaning around and diem or dies, meaning day. The rhythm is linked to the light–dark cycle that is photoperiod. Circannual rhythm in an animal is an adaptive character developed by the animals in response to the frequent changes in the environment.

Multiple choice

In an experiment one group of deer mouse (Prymyscus leucopus) were enclosed in a big hall containing natural things like plants, hay, twigs, logs, etc. A second group of mice was kept in laboratory in cages without any exposure to natural environment. Then mice from each group were enclosed in a room with predatory owl. It was found that the mice that were exposed to natural habitat could escape the owl but the mice kept in cages could not. This is an example of ______.

  1. reasoning

  2. cognition

  3. trial and error learning

  4. imprinting

  5. latent learning
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The group of deer mouse that were exposed to natural habitat learnt to live in a natural environment with environmental stresses like competition, predation etc. Though there was no predatory owl in the natural habitat, still the acquired the way to escape from others. This escaping behavior helped them to survive the attack of the owl and those in cages could not learn the techniques to escape. So they could not survive

Multiple choice

Stripes of a tiger is an example of _________.

Two closely related insect species are there. One is reddish in color and the other is orange. The reddish colored species is non toxic and palatable and the orange colored species is toxic and non palatable.

  1. cryptic coloration

  2. warning coloration

  3. mullerian mimicry

  4. batesian mimicry

  5. aggressive coloration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Crypsis means blending with the background. The stripes of a tiger are a method to befool the prey. The stripes of a tiger completely mix the animal with its background in the forest or grassland. So, it is an example of cryptic coloration.

Multiple choice

Which of the following is the odd pair?

  1. Amoeba: Protozoa

  2. Hydra: Cnidaria

  3. Taenia: Aschelminthes

  4. Pila: Mollusca

  5. Earthworm: Annelida
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Taenia is member of phylum Platyhelminthes.