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

Presence of a bladder is the common feature of

  1. Teleostomi

  2. Agnathostomes

  3. Holocephali

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

Teleost fishes (bony fishes) have developed an air bladder attached to the digestive system. It helps to give buoyancy.

Multiple choice

Which of the following statements about protistan algae are incorrect? A. They are heterotrophic and one of the major components of phytoplanktons. B. They are only neustonic in nature. C. The cell is surrounded by a cell wall and possesses gelatinous matrix around the cell wall. D. Distinct chloroplasts are absent. E. Pyrenoids are present in protistan algae.

  1. A, B and D

  2. B, D and E

  3. A, B and E

  4. C, D and E
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement A is not true because they are autotrophic. Statement B is not true because they are found in fresh water, marine water, benthic and neustonic regions. Statement D is not true because they have a distinct chloroplast for photosynthesis.

Multiple choice

Chinese Giant Pandas are rapidly disappearing from their natural habitats. Therefore, to preserve this unique species, pandas must be captured and placed in zoos.

Which of the following, if true, would most seriously weaken the conclusion drawn above?

  1. Captured pandas typically reproduce with greater frequency than they did in their natural habitat.

  2. Newborn pandas in captivity are more likely to survive the diseases that often strike and kill newborn pandas in the wild.

  3. Pandas eat only particular food that cannot be provided in the proper quanty outside of the panda's natural habitat.

  4. There are not enough pandas to provide a breeding pair to each zoo that wants one.

  5. None of these

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

If pandas cannot be provided with the food they need in captivity, then keeping them in captivity would not help to preserve them.

Multiple choice

Some rats are able to subsist on the barries of the poison sumac, a poisonous plant, by peeling away the poisonous skin of the fruit before they consume it. This method ensures that some rats will always be able to subsist on poison sumac because the plant could never evolve so as to acquire the ability to produce a poison that would prove lethal in the minute quantity left after the fruit is peeled.

The conclusion drawn depends on which of the following assumptions?

  1. The rats that succeed in removing the poisonous skins of the poison sumac are not able to evolve to the point where they are able to detoxify other herbs.

  2. Other types of toxic plants, unlike poison sumac, would be able to surmount their defenselessness through evolutionary modifications.

  3. The poisonous skins of poison sumac can never evolve in a manner such that rats could not successfully peel them.

  4. The method of toxin removal used by rats that eat poison sumac would not produce similar results on other types of toxic herbs.

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This argument assumes that the plant would never be able to produce a poison whose minute quantity could prove lethal.

Multiple choice

Frog is a cold-blooded animal because ____.

  1. its blood always remains cold

  2. it can live in cold waters

  3. it cannot regulate its body temperature

  4. its blood always has temperature lower than the atmosphere
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cold-blooded (ectothermic) animals like frogs cannot regulate their body temperature internally. Their temperature changes with the environment, and they rely on external heat sources. Options A, B, and D are incorrect - their blood isn't always cold, they inhabit various temperatures, and their blood temperature matches the environment.

Multiple choice

Where do viruses reproduce?

  1. Inside water

  2. Inside plant and animal cell

  3. In damp mud

  4. On dead plants and animals

  5. In air
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is correct. Viruses reproduce only inside the cells of the host organism, which may be a bacterium, plant or animal.