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 botany taxonomy and systematic botany life introduction to plant kingdom classification of organisms

Which one of the following statements is incorrect about the occurrence of notochord?

  1. It is present only in larval tail in ascidian.

  2. It is replaced by a vertebral column in adult frog.

  3. It is absent throughout life in humans from the very beginning.

  4. It is present throughout life in Amphioxus.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Humans belong to the Phylum Chordate. Animals belonging to the Phylum Chordata possess a notochord either during early embryonic life or throughout the embryonic life. In some, it Is replaced by vertebral column. In humans, notochord is present only In the embryonic stage, it is replaced by vertebral column in the adult form.

Multiple choice biology biodiversity and its classifications life introduction to plant kingdom classification of organisms

Which of the following are not the trends observed in the evolution of the central nervous system in invertebrates?

  1. Increased size of cerebral ganglia and formation of a 'brain'

  2. Reduction in the number of nerve cords

  3. Replacement of nerve cords by nerve nets

  4. Dominance of the ventral pair of nerve cords
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The nervous system of animals has evolved a lot from metazoans to mammals. Cnidarians happen to have the simplest nervous system comprising mainly nerve nets. It is assumed that this is the group of animals that the modern nervous system has evolved from. Hence, it can be said that nerve nets have been replaced by nerve nets and not the other way around.

So, the correct answer is 'Replacement of nerve cords by nerve nets'.

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

Which of the following is a group which has only multicellular heterotrophic organisms?

  1. Fungi

  2. Algae

  3. Protozoa

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fungi are the multicellular eukaryotic organisms. The kingdom Fungi has only heterotrophic organisms.

A. Fungi are heterotrophic.
B. Algae come under kingdom Plantae and they are mostly autotrophic.
C. Protozoa come under kingdom Protista which has unicellular organisms that are both autotrophic and heterotrophic.
Hence, the correct answer is 'Fungi'.

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

Which of the following statements is correct about the kingdom Plantae?

  1. They are multicellular eukaryotes

  2. They are usually autotrophic

  3. Their cells have cell wall, made up of cellulose

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The kingdom Plantae includes all plants i.e., trees, grasses, ferns and mosses, They are multicellular eukaryotes. They have nucleated cells. They have cell organelles like mitochondria and chloroplast. They contain chlorophyll and are capable of making their own food in presence of sunlight. So, they are called autotrophs. Their cells have distinct cellulose wall that other organisms lack. 

So, the correct answer is option D.

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

Algae can be described as

  1. Autotrophic and chemosynthetic

  2. Autotrophic and photosynthetic

  3. Heterotrophic and photosynthetic

  4. Heterotrophic and chemosynthetic
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Algae is the group of organisms which is comprised of the unicellular and the multicellular organisms. These organisms possess the chlorophyll pigments which help in the trapping of the solar energy. The plants can perform photosynthesis and prepare their own food. The plants are autotrophic and have the ability to produce their own food.

So, the correct answer is 'Autotrophic and photosynthetic'

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

Which of the following statements about the distinction between plants and animals is false?

  1. Plants have cell wall made up of cellulose.

  2. Plants have intermediate larval stages.

  3. Plants are extensively branched.

  4. Animals are heterotrophic.

  5. All of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants and animals though both livings are different in many ways. On considering the cell though the function is the same but structure is different, the plant cell has chloroplast which contains the green pigment chlorophyll. Besides this, the plant cell has a cell wall and large vacuole which are absent in  animal cells. However, in respect to the life cycle of plants and animals, many animals go through larval stages before they metamorphose into adults whereas plants do not have a larval stage. Thus, the correct answer is option B.

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

An autotropic organism with cells that are organized into tissues and organs.

Which of the following organism includes these characteristics?

  1. Monera

  2. Protista

  3. Fungi

  4. Plantae

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

Kingdom monera includes unicellular organisms while kingdom Protista includes eukaryotic unicellular and simple multicellular organisms. Kingdoms fungi and animals include heterotrophic organisms. Kingdom Plantae includes autotrophic multicellular organisms that exhibit tissue or organ/organ system level of body organization. Thus, the correct answer is D.

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

An organism is examined and is found to be multicellular and heterotrophic and have cell walls made of a substance other than cellulose. The organism belongs to which of the following kingdoms?

  1. Monera

  2. Protista

  3. Fungi

  4. Plantae

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

Kingdom monera includes unicellular prokaryotic BGA and bacteria. Kingdom Protista includes eukaryotic unicellular organisms, algae and all protozoa. Kingdom fungi include multicellular, heterotrophic eukaryotes with the chitinous cell wall. Kingdom Plantae includes autotrophic organisms with cellulosic cell wall while kingdom Animalia includes heterotrophic organisms without the cell wall. The correct answer is C.

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

Which of the following is the characteristics of plants?

  1. Multicellular with specialised tissues and organs

  2. Photosynthetic and contain chlorophylls a and b

  3. Protect developing embryo from desiccation

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plants are green nonmotile stationery living beings that grow in the soil. These are multicellular and has specialized tissues and organ to perform the various function of the plant body. They helps to prepare their food by photosynthesis with the help of pigments chlorophyll a and chlorophyll b.

Desiccation is the drying of the cell and the specialized tissue of plants protect the developing embryo from desiccation.
So, the correct option is 'all of the above'.

Multiple choice biology plant taxonomy classification of kingdom plantae features of plant and animal kingdom plant classification

Choose the correct answers from the alternatives given.
Into which of the following kingdoms would you place a multicellular land organism that carries on photosynthesis

  1. Animalia

  2. Plantae

  3. Fungi

  4. Protista
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Kingdom Plantae includes all eukaryotic chlorophyllous autotrophic organisms. A few members are partially heterotrophic such as insectivorous plant or parasites. bladderwort and venus fly trap are examples of insectivorous plants and Cuscuta is a parasite. 

Hence, the correct answer is 'Plantae'.

Multiple choice natural vegetative propagation reproduction in plants biology

A loose bulb is a

  1. False bulb

  2. Simple tunicated bulb

  3. Compound tunicated bulb

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

A loose bulb, where the scales are not tightly packed or tunicated, is often referred to as a scaly or false bulb in botanical terminology.

Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

Reptilian feature of Archaeopteryx is

  1. U-shaped furcula

  2. Presence of abdominal ribs

  3. Feathers with barbules

  4. Presence of a beak
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Archeopteryx is a connecting link between reptiles and aves. It has large wings, and hollow bones like aves, and tail and legs like a dinosaur. Apart from these reptilian features, they also have abdominal ribs resembling reptiles. 

So, option B is the correct answer.

Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

Cladistic taxonomy places the birds as Archosaurs, along with the

  1. Mammals

  2. Crocodilians

  3. Turtles

  4. Snakes

  5. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Cladistic taxonomy is a way of grouping organisms on the basis of shared features which then are branched out as individual characteristics begin to differ. Birds such as archosaurs are placed along with crocodilians and many species of extinct dinosaurs.
The correct answer is 'crocodilians'.