TyroCity: Biology Notes

50 Possible Questions of Biodiversity

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

UNIT THREE : BIODIVERSITY
Class : 11

50 Possible Questions for NEB Examination is Given Below :

What is the difference between aestivation and hibernation?
Mention two major external characteristics of a lizard.
Write short note on Aves.
How does Cocoon formation take place in earthworm?
Write short note on Euglena.
Give the type of limb found in aquatic animals.
In which group of animals you find flame cells?
Where do you find the signet-ring stage in the life- cycle of Plasmodium?
Mention the kids of tooth found in frog.
Characters of phylum protozoa.
Habitat of the lizard and rat.
Write short note on WBC.
Write the Phylum and Class names of a millipede.
How is sound produced in frog?
Give the two characters of Sproozoa.
Mention segment/s where the nerve ring lies in earthworm.
What is typhlosole?
What is function of teeth in Frog ?
Give the scientific names of wall lizard and tapeworm.
What do you mean by Protista?
Differentiate between Centipede and Millipede.
Which organ takes part in circulation of blood in living beings?
Give the scientific name of spider and frog.
Why paramecium never gets old?
What is cutaneous respiration?
In what medium proteolytic enzymes work?
Give the characters and classification of protozoa.
Write the function of trichocyst.
What is cyclosis?
Give two characters of insects?
What is flagellar?
What do you mean by hibernation?
Give the scientific name of tiger and leopard.
Why blood becomes red in higher organisms?
Give the zoological name of (i) Jellyfish (ii) Pigeon
Mention the number of valves in auriculo- ventricular aperture.
What is pellicle?
Name the boring organ of earthworm.
List the significances of conjugation in Paramecium.
Describe pre-erythrocytic schizogony of malarial parasites.
Write two peculiar characters of class Aves.
The openings of pulmonary veins are devoid of valves. Why?
Mention the functions of Trichocysts in Paramecium.
What is the role of nitrifying bacteria?
Explain the term epipetalous.
Write any two importance of lichens.
What is gymnosperm?
What is sorus?
What do you understand by taxonomic hierarchy?
What is Ostium?

Biota and their Environment

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Give four prevention measures of water pollution.
Write two causes of air-pollution and two measures to control population explosion.
Mention the example of chemotoxis in animals.
Air pollution and its effect on human health.
Give the names of any two migratory birds.
Name any two Volant features of bat.
Mention the body shape of the Volant animals.
Give two examples of endangered species.
Role of hormones in birds migration.
Give two main reasons causing air pollution.
What is endangered species?
Define adaptation.
Write the full form of IUCN.
What is taxis?
Give an example of a migratory bird.
What do you understand by wild life?
What is climax community?
What is land management?
What is green house effect?
Name two wildlife reserves of Nepal.
Give the difference between reflex action and taxis.
Define the term nature conservation.

Evolution of Life

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

What was Louis Pasteur’s view regarding origin of life?
Give the name of vestigial organ of human intestine.
Give any one example of the homologous organs in organisms.
What is coacervate?
Point out the difference between the new and old world monkeys.
Mention the source of energy in the Miller-Urey’s experiment.
Give two examples of vestigial organs.
What is organic evolution?
Write the important features of Archaeopteryx.
Define earth crust.
What is Mutation?
Who is Oparin?
Which one is closely related to man, apes or monkeys?
Give two acquired characters with examples.
Give the source of energy in Miller-Urey experiment.
What are homologous organs?
Which human ancestor invented fire?
What is the gist of Lamarckism?
Why are Lysosome called suicidal bags of cells?
How was the earth formed?
Who wrote the book “Origin of species”?
What do you mean by speciation?
Who proposed recapitulation theory?
What do you understand by convergent evolution?
Define biogenesis.
What is connecting link?

NEB Model Question for Biology

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Time : 3 hrs
F.M : 75
P.M : 27

Section A (Botany)

Attempt all the Questions. [1 X 7 = 7]

Q.1. Answer any seven questions in very short.
(a) Differentiate prokaryotic and eukaryotic cells on the basis of nucleus.
(b) Write the function of chloroplast.
(c) What are the component of a nucleotide ?
(d) Why are cyanobacteria called a blue green algae?
(e) Why are ferns called vascular cryptogams ?
(f) Write the difference between disc and ray floret.
(g) Name the primary consumers of pond ecosystem.
(h) Define greenhouse effect.
(i) Lichen is an example of symbiosis, how ?
(j) Define plant succession.

Q.2. Answer any five questions in brief. (3 X 5 = 15)
(a) In what ways DNA differ from RNA ?
(b) Give the shortcomings of two kingdom system of classification.
(c) Illustrate Vegetative structure of Spirogyra with neat & labelled diagram (no description required.)
(d) Write economic importance of fungi.
(e) By means of stamen character only, how will you differentiate the various families which are included in your syllabus ?
(f) Energy flow in an ecosystem is always unidirectional. Explain.
(g) How does the carbon cycle exist in the nature ?

Q.3. Describe the prophase I of meiosis cell division. Distinguish it from prophase of mitosis.[8]

Q.4. give the distinguishing characters of Solanaceae with its flora formula and flora diagram. Mention botanical names of three economic importance plants of this family. [7.5]

OR,

Define alternation of generation discuss it with reference to life cycle of Marchantia.

Section B (Zoology)

Q.1. Answer any seven questions in very short. (1 X 7 = 7)
(a) Define the term : Parasitology, paleontology.
(b) How is zoology related with chemistry
(c) What is organic evolution ?
(d) Define analogous organs.
(e) Differentiate oxidizing atmosphere and reducing atmosphere.
(f) Write zoological names of (i) wall lizard (ii) liver fluke.
(g) Mention the functions of contractile vacuoles in Paramecium.
(h) Define conservation.
(i) Name two examples of migratory birds.

Q.2. Answer any five questions in brief. (3 X 5 = 15)
(a) “Archeopteryx is connecting link between reptiles and birds”, justify.
(b) Give an acoount of gamogony life cycle of Plasmodium vivax
(c) Classify Pila.
(d) How is coccoon formed in earthwoirm ?
(e) Draw labelled diagram of internal structure of frog’s heart (No description)
(f) Describe volant adaptational features of birds.
(g) Enlist the important measures to protedt endangered species.

Q.3. Draw the neat and labelled diagram of male reproductive system of Pheretima. [7.5]

OR,

Describe the alimentary canal of Rana tigrina.

Q.4. Write an essay on the story of natural selection [8]

Short Questions

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

a) Tetradynamous stamens/flower:
Flower having six stamens in two whorls in which water whorl contains two shorter atamans such type of arrangement of stamens is called as tetradynamous stamens. The flower having tetradynamous stamens sometimes is called as a tetradynamous stamen sometimes is called as tetradynamous flower.

b) Cruciform flower/corolla:
Flower having cross-shaped petals in transverse plane is called cruciform corolla. Such flowers is called cruciform flower.

c) Siliqua:
Specific type of ovary, which is unilocular in young condition but becomes bilocular at maturity due to development of false septum called replum, such type of fruit is called siliqua.

d) Aestivation:
Arrangement if sepals petals in growing bud of flower is called aestivatiom. It may be
i) valvate
ii) Iratibet

e) Phyllotaxy:
Arrangement of leaves in branch or stem of plant is called phyllotaxy. It may be
i) Alternate
ii) Oosadkjhd
iii) Whorles

Biodiversity

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Define Binomial nomenclature with example.
Why spirogyra is a eukaryote?
Give the methods of reproduction in Spirogyra.
Bacteria are the nature’s scavengers. Justify.
Write hierarchic system in classification.
Give the shortcoming of two kingdoms system of classification.
Write the function of ‘akinets’ in Spirogyra.
Give the type of vascular bundle found in Pinus stem.
Name the father of taxonomy.
Classify the mustard plant in the hierarchic system.
Name the types of fruit in Gramineae and Solanaceae.
Why Bryophytes are known as amphibious plants?
Give the function of mesosomes of a bacterial cell.
Mention the advantage of five kingdoms system of classification.
Give the concept of bionomial system of nomenclature.
State the function of ‘Gemma cups’ in Marchantia.
Write the function of mycorhal roots in Pinus.
Give the type of ovary you find in legumes.
Define heterocyst.
Name the types of anther found in family cruciferae and compositae.
What is two kingdom type of classification?
What is Protonema?
What is taxonomic category?
Why ferns are called vascular cryptogams?
Differentiate between ray and disc florets.
Write two points of the demerits of 2 kingdom system of classification.
Why Bryophytes are called amphibious plants?
What is the botanical name of Pinus?
What is rhizome?
Write the botanical name of potato and tomato.
Define adventitious root.
Define aestivation.
What is sporangium?
What is lichen?
What is the prothallus of fern?
How do the bacteria get their nutrition?
Give two examples of cyanobacteria.
Define alternation of generations.
What is the genetic material of viruses?
What is protandrous?
What do you mean by heterocyst?

Biota and their Environment

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Define Parasitism with example.
Give the name of three ecological factors.
Give two differences between population and community.
Give a graphic diagram of the carbon cycle.
Which bacteria in legume roots are used for nitrogen fixation?
Role of predator in the balance of an ecosystem.
Write short note on Trophic level.
Name any two gases which cause green house effect.
Give any two examples of secondary consumers of a pond.
What are ecotypes?
Define food web.
What are decomposers?
What is natural resource?
What is food chain?
Define ecological Pyramid.
Why green algae is called producer?
Define a grazing food chain.
Mention the abiotic components of ecosystem.
Define abiotic factor.
What is acid rain?

Biodiversity

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

What is the difference between aestivation and hibernation?
Mention two major external characteristics of a lizard.
Write short note on Aves.
How does Cocoon formation take place in earthworm?
Write short note on Euglena.
Give the type of limb found in aquatic animals.
In which group of animals you find flame cells?
Where do you find the signet-ring stage in the life-cycle of Plasmodium?
Mention the kids of tooth found in frog.
Characters of phylum protozoa.
Habitat of the lizard and rat.
Write short note on WBC.
Write the Phylum and Class names of a millipede.
How is sound produced in frog?
Give the two characters of Sproozoa.
Mention segment/s where the nerve ring lies in earthworm.
What is typhlosole?
Give the scientific names of wall lizard and tape worm.
What do you mean by Protista?
Differentiate between Centipede and Millipede.
Which organ takes part in circulation of blood in living beings?
Give the scientific name of spider and frog.
Why paramecium never gets old?
What is cutaneous respiration?
In what medium proteolytic enzymes work?
Give the characters and classification of protozoa.
Write the function of trichocyst.
What is cyclosis?
Give two characters of insects?
What is flagella?
What do you mean by hibernation?
Give the scientific name of tiger and leopard.
Why blood becomes red in higher organisms?
Give the zoological name of (i) Jelly fish (ii) Pigeon
Mention the number of valves in auriculo-ventricular aperture.
What is pellicle?
Name the boring organ of earthworm.
List the significances of conjugation in Paramecium.
Describe pre-erythrocytic schizogony of malarial parasites.
Write two peculiar characters of class Aves.
The openings of pulmonary veins are devoid of valves. Why?
Mention the functions of Trichocyst in Paramecium.
What is the role of nitrifying bacteria?
Explain the term epipetalous.
Write any two importance of lichens.
What is gymnosperm?
What is sorus?
What do you understand by taxonomic hierarchy?
What is Ostium?

Cell Biology

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Name two DNA containing cell organelles.
Distinguish between prophase and metaphase.
Name the site for: (i) Protein synthesis (ii) Photosynthesis
List two characteristics which differ DNA and RNA.
Give two differences between Prophase of Mitosis and Meiosis
Give two differences between asexual reproduction and sexual reproduction.
What is the process dealing with the formation of sex cell?
Mention the change you find in chromosomes during zygotene stage of meiotic Prophaes-I cell division.
Mention the function of RNA.
Give two characters of prokaryotic cell?
Why mitochondria is called power house of a cell?
Define cell theory.
What are cristae?
Name the full form of ATP and DNA.
Write the chief components of DNA.
Write the function of a cell wall.
Define cell theory?
Name the components of nucleotide.
What is prokaryotic cell?
Why Lysosome is called suicidal bag?
Give the chief components of RNA.
Describe the structure and functions of mitochondria.
Define Cytology.
Mention two differences between plant and animal cell.
What are the major chemical constituents of protoplasm?
What do you mean by Cytokinesis?
Describe the plastids.
Describe the process of crossing over in meiosis.
Differentiate between prokaryotic and eukaryotic cell.
Define cellular totiopotency.
What is plasmodesmata?
Write the function of plasma membrane.
What is chisamata?
Define eobiont.
What is cyclosis?

NEB Model Question for Biology – Class 11

Biology11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

FOR : 2070
Time : 3 hrs
F.M : 75
P.M : 27

Section A (Botany)

Attempt all the Questions. [1 × 7 = 7]

Q.1. Answer any seven questions in very short.
(a) Differentiate prokaryotic and eukaryotic cells on the basis of nucleus.
(b) Write the function of chloroplast.
(c) What are the component of a nucleotide ?
(d) Why are cyanobacteria called a blue-green algae?
(e) Why are ferns called vascular cryptogams ?
(f) Write the difference between disc and ray floret.
(g) Name the primary consumers of pond ecosystem.
(h) Define greenhouse effect.
(i) Lichen is an example of symbiosis, how ?
(j) Define plant succession.

Q.2. Answer any five questions in brief. 3 × 5 = 15 In what ways DNA differs from RNA ?
(b) Give the shortcomings of two kingdom system of classification.
(c) Illustrate Vegetative structure of Spirogyra with neat & labelled diagram (no description required.)
(d) Write economic importance of fungi.
(e) By means of stamen character only, how will you differentiate the various families which are included inyour syllabus ?
(f) Energy flow in an ecosystem is always unidirectional. Explain.
(g) How does the carbon cycle exist in the nature ?

Q.3. Describe the prophase I of meiosis cell division. Distinguish it from prophase of mitosis.[8]

Q.4. Give the distinguishing characters of Solanaceae with its flora formula and flora diagram. Mention botanical names of three economic importance plants of this family. [7.5]
OR,
Define alternation of generation discuss it with reference to life cycle of Marchantia.
Section B (Zoology)

Q.1. Answer any seven questions in very short. 1 × 7 = 7 Define the term : Parasitology, paleontology.
(b) How is zoology related with chemistry
(c) What is organic evolution ?
(d) Define analogous organs.
(e) Differentiate oxidizing atmosphere and reducing atmosphere.
(f) Write zoological names of (i) wall lizard (ii) liver fluke.
(g) Mention the functions of contractile vacuoles in Paramecium.
(h) Define conservation.
(i) Name two examples of migratory birds.

Q.2. Answer any five questions in brief. 3 × 5 = 15 “Archeopteryx is connecting link between reptiles and birds”, justify.
(b) Give an acoount of gamogony life cycle of Plasmodium vivax
(c) Classify Pila.
(d) How is coccoon formed in earthwoirm ?
(e) Draw labelled diagram of internal structure of frog’s heart (No description)
(f) Describe volant adaptational features of birds.
(g) Enlist the important measures to protedt endangered species.

Q.3. Draw the neat and labelled diagram of male reproductive system of Pheretima. [7.5]

OR,

Describe the alimentary canal of Rana tigrina.

Q.4. Write an essay on the story of natural selection [8]