Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Which of the following kingdoms has no well defined boundaries? 

  1. Monera

  2. Protista

  3. Fungi

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Five kingdom classification was proposed by R.H. Whittaker. According to this organisms has been divided into five kingdoms Monera, Protista, Fungi, Animalia, Plantae. Organisms are divided on the basis of different characters like cell boundary, shape, type of nutrition etc.
According to R.H. Whittaker classification-
Monera has a cell wall. It is made up of polysaccharides i.e. peptidoglycan
Fungi have a cell wall. It is made up of chitin.
Protista has no well-defined boundaries.
So, the correct answer is 'Protista'.
Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Members of Kingdom Protista are primarily 

  1. parasites

  2. terrestrial

  3. aquatic

  4. photosynthetic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

All single-celled eukaryotes are placed under Protista, but the boundaries of this kingdom are not well defined. Members of Protista are primarily aquatic. This kingdom forms a link with the others dealing with plants, animals, and fungi. Being eukaryotes, the protistan cell body contains a well-defined nucleus and other membrane-bound organelles.

So the correct option is "aquatic".

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

In which kingdom will you place an organism which is unicellular, eukaryotic and photosynthetic?

  1. Kingdom Plantae

  2. Kingdom Monera

  3. Kingdom Protista

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

Protists are eukaryotic organisms that are mostly unicellular in nature. They can be mainly classified into three main categories:-

  • Animal-like protists, which are heterotrophs and has the ability to move.

  • Plant-like protists- that are autotrophs and can photosynthesize.

  • Fungi like protist- that are heterotroph and possess a cell with the cell wall.

  • Kingdom Plantae includes mainly multicellular, eukaryotic organisms that have the ability to do photosynthesis. Kingdom Monera composed of organisms that are prokaryotic and unicellular. 

  • Kingdom Animalia includes animals which are eukaryotic multicellular. They do not perform photosynthesis.

So, the correct option is C.

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Kidney of vertebrates resembles with contractile vacuole of protozonas in 

  1. Expelling out glucose

  2. Expelling out urea and uric acid

  3. Expelling out excess of water

  4. Expelling out salts
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kidneys seem to have evolved in primitive freshwater vertebrates to help them expel the excess water that continuously entered the body by osmosis. Later, kidneys also acquired the function of removing the waste materials from body.

The kidneys in vertebrates are bean-shaped organs that remove excess organic molecules from the blood, and waste products of metabolism. In protozoans, the contractile vacuole does the function of the kidneys of vertebrates an expels the excess water from the system.

Therefore, the correct answer is option c.

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

This taxonomic group of living organisms is primarily comprised of unicellular eukaryotes but does some members which are colonial, and some which display true multicellularity. The cells of organisms in this group have a nucleus and membrane-bound organelles, and include both autotrophic and heterotrophic organisms.
Which taxonomic group of organisms is described above?

  1. Kingdom Plantae

  2. Kingdom Fungi

  3. Kingdom Animalia

  4. Kingdom Protista

  5. Domain Bacteria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. Plantae is the kingdom of multicellular and photoautotrophic organisms which grow indefinitely. The body is differentiated into root, stem and leaves. Mode of nutrition is autotrophic due to presence of chlorophyll. Cell wall is present which is made up of cellulose.
B. Fungi is a kingdom of heterotrophic organisms. Fungi have filamentous forms called hyphae.
C. Kingdom Animalia comprises multicellular organisms having eukaryotic cells. Cell wall is absent and the mode of nutrition is heterotrophic.
D. Kingdom Protista consists of eukaryotic organisms which are solitary unicellular or colonial unicellular. Cell wall may or may not be present. A well defined nucleus is present. The cytoplasm contains a variety of membrane bound organelles like mitochondrion, plastids, endoplasmic reticulum, Golgi bodies. Mode of nutrition may be autotrophic or heterotrophic depending upon the organisms.
E. Domain bacteria consists of prokaryotic organisms which lack a well defined nucleus and membrane bound organelles. Mode of nutrition is autotrophic ( photosynthetic and chemosynthetic) and heterotrophic.
So, the correct answer is Kingdom protista.
Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Choose the correct answers from the alternatives given.
Which of the following protists do not have multicellular representatives?

  1. Chrysophyta

  2. Phaeophyta

  3. Rhodophyta

  4. All of these include multicellular representatives
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chrysophyta, Phaeophyta, Rhodophyta are the group which contains multicellular organisms.

So, the correct option is 'All of these include multicellular representatives'.

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

The main function of the contractile vacuole is

  1. Synthesis of carbohydrate

  2. Eliminating excess water

  3. To be a photoreceptor to detect light

  4. Resistance for survival during winter and times of drought
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The contractile vacuole is a structure found in many marine organisms. It functions as an organelle to eliminate the excess water which may have stored in the cell because of osmotic conditions.

so, the correct option is 'eliminating excess water'

Multiple choice biology adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

Phosphorus of ocean becomes available to land plants due to

  1. Sea birds

  2. Deep sea activities

  3. Ocean spray

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

Guano, which is the excrement of sea birds, is rich in phosphorus. When sea birds deposit this on land, it returns phosphorus from the marine food chain back to terrestrial ecosystems.

Multiple choice biology adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

Invertebrates were formed and active around:-

  1. $500$ mya
  2. $350$ mya
  3. $320$ mya
  4. $200$ mya
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Invertebrates were formed and active approximately 500 million years ago (mya). Jawless fish existed around 350 mya; while, sea weeds and few plants evolved approximately 320 mya. Dinosaurs extinct approximately 65 mya. 


So, the correct answer is option A. 

Multiple choice biology adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

Match List I with List II and select the correct answer using the codes given the lists.

List-I List-II
a. Deciduous forest tree $1$. Tectona
b. Conifer $2$. Junipems
c. Palm $3$. Borassus
d. Aquatic microphyle $4$. Lemna
  1. A-$1$, B-$3$, C-$4$, D-$2$
  2. A-$1$, B-$2$, C-$3$, D-$4$
  3. A-$2$, B-$1$, C-$3$, D-$4$
  4. A-$3$, B-$2$, C-$1$, D-$4$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Matching the items correctly: Deciduous forest tree corresponds to Tectona (teak, 1), Conifer corresponds to Junipers (2), Palm corresponds to Borassus (3), and Aquatic microphyte corresponds to Lemna (4). Thus, the correct sequence is A-1, B-2, C-3, D-4.