PREFACE

The home assignment , being given to the students , aims

at strengthening the concepts of each student through

reinforcement of topics covered in class lectures by

practicing the questions given in the assignment.

Three sample papers in each subject have been given.

The maximum benefit can be gained only if the student

goes through all the topics of fragment 1 thoroughly

before attempting the sample paper. The assignment will

not only act as a reinforcement tool but will also help the

students acquire the tendency of solving the entire paper

in one sitting, just like he/she sits in an examination for

three hours. Hence, improving student’s time

management skill in examination.

This assignment will also fetch the student 5 marks in

practical. The solutions of all the question papers given in

the home assignment have to be written on separate A-4

sheets.

For all the subjects , the assignments have to be

submitted in different folders respectively.

Last date to submit the assignment for each subject 5th

July ’19.

- PRINCIPAL

ASSIGNMENT 1 : 2019-20

BIOLOGY : XI MARKS: 70

Instructions :

• All questions are compulsory.

• Section A carries one mark questions, Section B carries two marks questions,

Section C carries three marks questions and Section D carries five marks

questions.

SECTION A

1. Define a monograph.

2. Why is maize grain usually called a fruit and not seed?

3. Which group of algae has mannitol as the reserve food material?

4. How are pneumatic bones and air sacs important in aves?

OR

What is the role of radula in mollusc.

5. In mangrove vegetation, pneumatophore are modified adventitious roots.write

the function of roots.

OR

Name an alga that shows dipontic life cycle.

SECTION B

6. What is taxon? Give a few examples.

7. Are viruses living or non-living? Justify your answer.

8. Does heterospory have some evolutionary significance in the plant kingdom?

9. The plant body in higher plants is well differentiated and well developed. Roots

are the organs used for the purpose of absorption. What is the equivalent of roots

in the less developed lower plants?

OR

Answer the following:

(i) Name a plant group in which adult sporophyte is dependent on gametophyte.

(ii) What is an agar?

10. Provide a technical term for the following:

Blood filled cavity in arthropods

A stinging organ of jellyfish

Free-floating form of Cnidaria

Lateral appendages in aquatic annelids

11. What is bioluminescence? Give an example.

OR

What is metagenesis? Mention an example which exhibits this phenomenon.

12. State difference between valvate and twisted aestivation

OR

Name the types of flower based on position of ovary and also the names given to

such Ovaries.

SECTION C

13. How is the botanical garden useful for scientists?

OR

Describe and write the importance of various taxonomical aids.

(a)Keys (b) herbarium (c) Museums.

14. Describe briefly four major groups of protozoa.

15. Diatoms are also called as ‘pearls of ocean’. Why? What is diatomaceous earth?

16. what do the terms phycobionts and mycobionts signify?

17. How is the five kingdom classification advantageous over the two kingdom

classification?

OR

(i) What do you mean by dikaryon.

(ii) Why deuteromycetes are called fungi imperfecti?

18. What do you mean by double fertilization and triple fusion?

19. Write a note on economic importance of algae.

20. “All vertebrates are chordates but all chordates are not vertebrates.” Justify the

statement.

21. Which is the first phylum showing a closed circulatory system? What are the

advantages of a closed circulatory system over open circulatory system?

22. What is placentation? Describe different types of placentation.

23. Differentiate between :

(i) Racemose and cymose inflorescence

(ii) Fibrous root and adventitious root

(iii) Apocarpous and syncarpous ovary

24. Stolon, offset and rhizome are different forms of stem modifications. How can

these modified forms be distinguished from each other?

OR

Sunflower is not a flower. Explain.

SECTION D

25. Distinguish between families Fabaceae, Solanaceae, Liliaceae on the basis of

gynoecium characteristics (with figure) and also write the floral formula of each

families.

OR

(a) Draw a well labelled diagram of monocot seed.

(b)Define the term aleurone layer, coleorhiza, scutellum.

26. Write short notes on following:

(a) Diploblastic and triploblastic organization.

(b) Different types of coelom

(c)Different types of symmetry

(d) Notochord

(e) Segmentation

OR

Comment upon the habitats and external features of class Amphibia and Reptilia.

27. What is alternation of generation? Describe the various types of alternation of

generation in plant kingdom.

OR

Water is essential for fertilization in bryophytes and pteridophytes. How

gymnosperms cope without the use of water in fertilization? Justify.

ASSIGNMENT 2 : 2019-20

BIOLOGY : XI MARKS: 70

SECTION – A (1MARKS)

Q1. What is a couplet in the taxonomic key?

Q2. Name the eukaryotic kingdoms in the five-kingdom classification proposed by

Whittaker.

Q3. Name the plants with

(a) Haplontic life cycle (b) Diplontic life cycle

(c) Haplo-diplontic life cycle

OR

Roots are used for the purpose of absorption. What is equivalent to roots in less

developed lower plants?

Q4. Match the following:

Column ‘A’ Column ‘B’

(a) Amphibia (i) Air Bladder

(b) Mammals (ii) Cartilaginous Notochord

(c) Chondrichthyes (iii) Mammary Glands

(d) Osteichthyes (iv) Pneumatic bones

(e) Cyclostomata (v) Dual Habitat

(f) Aves (vi) Sucking and circular mouth without jaws

OR

Differentiate between diploblastic and triploblastic animals. With examples?

Q5. What are the edible parts of ginger and onion?

SECTION – B (2MARKS)

Q6. Name a few botanical gardens in India. Also, name the largest botanical garden in

the world.

Q7 What is diatomaceous earth? Why are diatoms referred to as ‘pearls of the

ocean’?

Q8. Why are bryophytes considered amphibians of the plant kingdom?

Q9. Does heterospory have some evolutionary significance in the plant kingdom?

OR

Write the different group of Algae on the basis of Pigments and Stored food?

Q10 Provide a technical term for the following:

(a) Blood filled cavity in arthropods

(b) A stinging organ of jellyfish

(c) Free-floating form of Cnidaria

(d) Lateral appendages in aquatic annelids

Q11. What do you understand by metagenesis? Give an example.

OR

Give an example of:

(a) An oviparous mammal

(b) Roundworm

(c) A limbless reptile

(d) Fish possessing poison sting

Q12. Differentiate between the roots of aquatic plants and terrestrial plants.

SECTION – C (3MARKS)

Q13. With reference to Brassicacompestrislinn.

(a) Give the common name of the plant

(b) What do the first two words of the name indicate?

(c) Why is the scientific name written in italics?

(d) What does “linn.” mean?

Q14. What is the role of fungi our daily lives?

Q15. Are viruses living or non-living?

Q16. What are the characteristic features of euglenoids? Write example also.

Q17. Compare the different classes of Kingdom Fungi?

Q18. Differentiate between the male and female gametophytes of pteridophytes and

gymnosperms.

Q19. Mycorrhiza and coralloid roots are found in which plants? What do these terms

mean?

Q20. Complete the following:

Phylum/Class Excretory Organ Circulatory Organ Respiratory

Organ

Arthropoda A Lungs/Gills/Tracheal

system B

C Nephridia Closed D

E Metanephridia Open Skin/Parapodia

Amphibia Closed Lungs F

Q21. Differentiate between phylum Coelenterate and Porifera? (5 differences and one

example)

Q22. Name the floral parts of an angiosperm. Also, mention their arrangements.

Q23. Ginger grows underground like any other root. Then why is it considered a stem

and not root?

OR

Describe the modifications of the stem. Give examples for the same.

Q24. Describe different types of phyllotaxy with suitable examples?

SECTION – D (5MARKS)

Q25. What do you mean by double fertilization and triple fusion? Also draw structure

of Embryo Sac of Angiosperm Plant?

OR

Explain the haplodiplontic Life Cycle? And Compare this life Cycle between

Bryophytes and Pteridophytes?

Q26. Explain the all classes of phylum Chordata in brief with suitable example?

OR

Write the functions of followings with an animal name-

(a) Redulla d. book lungs

(b) Choanocytes e. tracheal system

(c) Nephridia

Q27. Describe the Family Solanaceae with examples in following heads

(i) Root, (ii) Stem (iii) Leaf

(iv) Inflorescence (vi) Floral formula (vii) Floral diagram

OR

Explain the structure of root and its different types.

ASSIGNMENT 3 : 2019-20

BIOLOGY : XI MARKS: 70

General Instruction :

• All questions are compulsory.

• This question paper consists of four Sections A, B, C, and D. Section –A contains 5

questions of 1 marks each, Section-B is of 7 questions of 2 marks each, Section – has

12 question of 3 marks each and Section –D has 3 questions of 5 marks each.

• Internal choice is given in all the sections. A student has to attempt only one of the

alternatives in such questions.

• Whenever necessary, draw neat & labelled diagram.

SECTION-A

Q1. Which of the following suffixes is used for the unit of classification in plants,

indicating a taxonomic category of family

a) aceae b) …ales c)… ae d)a and c

Q2. Name smallest living cells that can survive without oxygen.

Q3. What are the basis of cytotaxonomy?

OR

What is basis of phylogenetic classification systems?

Q4. Give scientific term (one word) for following:

a) Animals who are able to maintain a constant body temperature.

b) Which structure represent the ear in amphibian.

OR

Name the phylum commonly known as sea walnuts and write their structure

which help in locomotion.

Q5. What is function of pneumatophores? Give example of plant in which it is

present.

SECTION- B

Q6. (i) Which taxonomical aid is serve as quick referral system in taxonomic studies?

(ii) Which botanical garden is situated in Lucknow?

Q7. What are the main criteria used in five kingdom classification?

Q 8 . Write economic importances of algae.

Q9 . Why are the stem like and leaf like structures of a moss plant not called stem and

leaves?

OR

Gymnosperm fail to produce fruits. Why?

Q10. Match the items given in column I with appropriate items of column II :

Column I Column II

(a) Canal system a)Mollusca

(b) Nematocysts b) Echinodermata

(c) Parapodia c) sponges

(d) Radula d) Nereis

e) Hydra

Q11. Give one example of each of the following:

a) round worm b) A limbless reptile/amphibian

c) Fish possessing poison sting d) An oviparous mammal

OR

Write one example each of the following:

a) cold blooded animal b)Warm blooded animal

c) Dioecious animal

d)Animal possessing dry and cornifiedskin

Q12. Differentiate between:

(a) Racemose and cymose inflorescence

(b) apocarpous and syncarpous ovary with e.g.

Define the following term:

a) actinomorphic with e.g. b)zygomorphic with e.g.

SECTION –C

Q13. What are the main differences among chlorophyceae ,phaeophyceae and

Rhodophyceae.

Q.14 a) All vertebrates are chordates but all chordates are not vertebrates. Justify the

statement.

b)Give any two peculiar features of urochordates with two examples.

Q15. What type of ovary is found in family solanaceae ? Draw diagram of ovary.

Q16. Distinguish between:

a) Plant viruses and animal viruses on basis of genetic material.

b) plant viruses and bacteriophages on the basis of genetic material.

c) plant viruses and animal viruses on the basis of symptom of diseases caused by

them.

OR

a) What is the principle underlying the use of cyanobacteria in agricultural fields

for crop improvement?

b) What is diatomaceous earth? How is it important to man?

Q17. a) name an organism that is made up of two component which live together in

symbiotic association. Also name the component.

b) Give the function of each component .

c) What is their ecological significance?

Q18. Differentiate between Ascomycetes and Basidiomycetes with e.g.

OR

Write difference between monera and Protista with e.g.

Q19 (a)Name any acellular infective agent which are not included in five kingdom of

Whittakar.

(b)Give example of each of

1. Amoeboid protozoans.

2.Flagellated protozoans.

3.Ciliated protozoans

4. Sporozoans. which of them causes malaria in human being?

Q20. Draw flow chart for taxonomic categories showing hierarchialarrangein

ascending order.

OR

What do you understand by Binomial nomenclature? Who proposed it?

Q21. Draw labelled diagram of v.s. of maize seed.

Q22. Define Aestivation.name type of aestivation and give one e.g. of each.

OR

Define placentation and mention type of placentation in following:

1.pea 2. Tomato 3.mustard 4. Sunflower

Q23 What are the modifications that are observed in birds that help in flying?

Q24. When and where does reduction division takes place in the life cycle of a

angiosperm, amoss and a gymnosperm.

SECTION –D

Q25 Describe the arrangement f floral member in relation to their insertion on

thalamus. Also draw diagram .

OR

Draw floral diagram for pea plant and write floral formula for it.

Q26 a) Differentiate bony and cartilaginous fishes with suitable examples.

b) Make a diagram to show typical chordates characteristics

OR

a) Give any five peculiar feature of phylum Arthropoda.

b) Give three reasons why a snail and an octopus are classified under the same

phylum.

Q27. Describe similarities and differences in sexual reproduction of moss and fern .

OR

Name three groups of plant that bear archaegonia. Briefly describe the life cycle

of any one of them.

ASSIGNMENT 4 : 2019-20

BIOLOGY : XI MARKS: 70

General Instructions:

(1) The question paper consists of 27 questions.

(2) All questions are compulsory.

(3) Section-A each question carries 1 mark.

(4) Section-B each question carries 2 marks.

(5) Section-C each question carries 3 marks.

(6) Section-D each question carries 5 marks.

SECTION-A

Q1. Which of the following suffixes is used for the unit of classification in plants,

indicating a taxonomic category of family

a) ………. aceae b)…………ales

c)…………ae d) a and c

Q2. Name smallest living cells that can survive without oxygen.

Q3. What are the basis of cytotaxonomy?

OR

What is basis of phylogenetic classification systems?

Q4. Give scientific term (one word) for following:

a) Animals who are able to maintain a constant body temperature.

b) Which structure represent the ear in amphibian.

OR

Name the phylum commonly known as sea walnuts and write their structure

which help in locomotion.

Q5. What is function of pneumatophores? Give example of plant in which it is

present.

SECTION-B

Q6. 1)Which taxonomical aid is serve as quick referral system in taxonomic studies?

2) Which botanical garden is situated in Lucknow?

Q7. What are the main criteria used in five kingdom classification?

Q8. Write economic importance of algae.

Q9. Why are the stemlike and leaf like structures of a moss plant not called stem and

leaves?

OR

Gymnosperm fail to produce fruits. Why?

Q10. Match the items given in column I with appropriate items of column II :

Column-I Column-II

1) Canal system a )Mollusca

2) Nematocysts b) Echinodermata

3) Parapodia c)sponges

4) Radula d) Nereis

e) Hydra

Q11. Give one example of each of the following:

a) round worm b)A limbless reptile/amphibian

c) Fish possessing poison sting d)An oviparous mammal

OR

Write one example each of the following:

a) cold blooded animal b)Warm blooded animal

c) Dioecious animal d)Animal possessing dry and cornified skin

Q12. Differentiate between:

a)Racemose and cymose inflorescence

b)apocarpous and syncarpous ovary with e.g.

OR

Define the following term:

a)actinomorphic with e.g. b)zygomorphic with e.g.

SECTION –C

Q13. What are the main differences among chlorophyceae ,phaeophyceae and

Rhodophyceae.

Q.14 a) All vertebrates are chordates but all chordates are not vertebrates. Justify the

statement.

b) Give any two peculiar features of urochordates with two examples.

Q15. What type of ovary is found in family solanaceae ? Draw diagram of ovary.

Q16. Distinguish between:

a)Plant viruses and animal viruses on basis of genetic material.

b)plant viruses and bacteriophages on the basis of genetic material.

c)plant viruses and animal viruses on the basis of symptom of diseases caused by

them.

OR

a) What is the principle underlying the use of cyanobacteria in agricultural fields

for crop improvement?

b) What is diatomaceous earth? How is it important to man?

Q17. a) Name an organism that is made up of two component which live together in

symbiotic association. Also name the component.

b)Give the function of each component .

c)What is their ecological significance?

Q18. Differentiate between Ascomycetes and Basidiomycetes with e.g.

OR

Write difference between monera and Protista with e.g.

Q19. a)Name any acellular infective agent which are not included in five kingdom of

Whittakar.

b)Give example of each of :

1.Amoeboid protozoans. 2.Flagellated protozoans.

3.Ciliated protozoans . 4. Sporozoans.

which of them causes malaria in human being?

Q20. Draw flow chart for taxonomic categories showing hierarchial arrange in

ascending order.

OR

What do you understand by Binomial nomenclature? Who proposed it?

Q21. Draw labelled diagram of v.s. of maize seed.

Q22. Define Aestivation.name type of aestivation and give one e.g. of each.

OR

Define placentation and mention type of placentation in following:

1.Pea 2. Tomato 3.mustard 4.Sunflower

Q23 What are the modifications that are observed in birds that help in flying?

Q24. When and where does reduction division takes place in the life cycle of a

angiosperm, a moss and a gymnosperm.

SECTION –D

Q25. Describe the arrangement f floral member in relation to their insertion on

thalamus. Also draw diagram.

OR

Draw floral diagram for pea plant and write floral formula for it.

Q26. a) Differentiate bony and cartilaginous fishes with suitable examples.

B) Make a diagram to show typical chordates characteristics

OR

a) Give any five peculiar feature of phylum Arthropoda.

b) Give three reasons why a snail and an octopus are classified under the same

phylum.

Q27. Describe similarities and differences in sexual reproduction of moss and fern .

OR

Name three groups of plant that bear archaegonia. Briefly describe the life cycle

of any one of them.