Subject: Biology
Class XI
Time Allowed: 3 hours
Max Marks: 70
General instructions
– There are 39 questions in this question paper. All questions are compulsory.
– Section A: Q. No. 1 to 7 are M.C.Q type questions. One mark for each question.
– Q. No. 8 to 12 are Assertion reason based questions One mark for each question.
– Q. No 13 and 14 are, passage based questions carrying 4 marks and 5 marks.
– Q. No 15 to 21 are fill up the blanks. Carry 1 mark for each question.
– Q. No 22 to 26 are the questions are based on one-word answer. Carry one mark for each question
– Q. No 27 and 28 are, choose the true and false type questions, caring one mark for each question.
– Section B: Q. No. 29 to 32 are short answer questions and carry 2 marks each.
– Section C: Q. No. 33 to 36 are short answer questions and carry 3 marks each.
– Section D: Q. No. 37 to 39 are long answer questions carrying 5 marks each.
– There is no overall choice. However, internal choices have been provided.
– Draw well labeled diagram where required.
Section ‘A’
Q1 The process by which anything is grouped into convenient categories based on some easily observable characters is:
a) identification b) classification c) sorting. d) fusion.
Q2 Which of the following organisms are known as chief producers in the oceans?
a) cyano bacteria b) diatoms c) dinoflagellates. d) euglenoids.
Q3 Volvox chlamydomonas and chara are the examples of
a) class chlorophyceae. b) class rodophyceae c) class phaeophyceae d)class cynophyceae.
Q4 Identify the given diagram of the animal and select the correct option which includes the correct features of that animal?
a) A is female Ascaris and B is male ascaries male ascaries is smaller than female ascaris.
b) A is male ascaries and B is female ascaris
c) A is male ascaries and B is female ascaris male ascaris is longer than female ascaris.
d) A is ascaries while B is earthworm.
Q5 Nodes are the reason of stem where:
a) food is stored by plant.
b) leaves are born
c) xylem and phloems are present.
d) auxiliary Buds develop.
Q6 which of the following features is common to prokaryotes and many eukaryotes?
a) cell wall is present
b) chromosomes are present
c) Subcellular organelles are present
d) nuclear membrane is present
Q7 See the diagrams carefully and identify the different stages of mitosis A, B and C by choosing appropriate option given below.
a) metaphase,telophase,interphase
b) telophase, metaphase Prophase
c) Cytokinesis
d) None of this.
Q8 to 12 are assertion reason based questions. Mark the correct choice as
a) Both assertion and reason are true and reason is the correct explanation of assertion.
b) Both assertion and reason are true but the reason is not the correct explanation of assertion.
c) Assertion is a true but reason is false.
d) Assertion is false but a reason is true.
Q8 Assertion: Species is a group of individuals with fundamental similarities.
Reason: Indica, Leo etc. represents such group of individuals
Q9 Assertion: Bryophytes are the amphibians of plant Kingdom.
Reason: They are found in swamps and the areas Where water and land meet
Q10 Assertion: Digested and semi digested food is absorbed by the body surface in tapeworms.
Reason: digestive organs are absent in tapeworms.
Q11 Assertion: in some flowers like Lily perianth is a term used when calyx and Corolla are not distinct
Reason: Calyx and Corolla are the reproductive organs.
Q12 Assertion: Mitochondria and chloroplast are semi-autonomous organelles.
Reason: These are formed by the division of preexisting organelles as well as they contain DNA but Lake protein synthesis machinery.
Q13 Read the following text and answer the following questions on the basis of same.
Sonali 7 years old girl was roaming in the garden when she saw a butterfly hovering over a flower she was attracted to the flower and plugged it on coming back home she showed it to her brother a Biology graduate student who is scolded her for her action he explained the importance of flower for the plants and insects like Butterfly honey bees etc. Ek minut Mein I Sonali realised Har mistake and immediately promised not to repeat it
i) What is the importance of flower
ii) Name the different parts of a flower.
iii) Name the condition of flower where stamen remain free.
iv) Define zygomorphic symmetry.
Q 14 Class 11 Biology students attended a seminar where the speaker explain the students about the basic macromolecule found in the body that is protein he started with the monomer unit of protein and explain about different amino acid found as amino acids are organic compounds containing and amino group and acidic group as substituents on the same carbon they are also considered as substituted on the same carbon they are also considered as substituted Methane. Suddenly Ajay stood up and asked about his queries based on the topic the guest of seminar specially explain the him all the things Ajay became satisfied and return the home happily from the seminar.
i) What are the four substituent group in an amino acid?
ii) Why are there so many different types of amino acids.
iii) Give the general formula of amino acid.
iv) What are acidic amino acids give example.
v) Name any two amino acids.
Question number 15 to 21 are fill up the blanks.
Q15 Carolus Linnaus. Suggested two kingdom classification he divided all the organism into……. and ….. Kingdom.
Q16 The plant body of algae represent the ……..phase.
Q17 Fruit is the ripping….,……?
Q18 Numbers of segments in earthworm’s a body varies from …..to…..
Q19 The layer of cell wall common to two adjacent cell wall in plants is called…………
Q20 A peptide bond is a formed between a carboxyl group and…….. group.
Q21 Somatic cells multiply by…….. division.
Question number 22 to 26 are the questions having the one-word answer.
Q22 Who wrote the book species plantarium?
Q23 The name of excretory organ of earthworm is……
Q24 Apocorpus and syncarpus words related with…….. parts of flower?
Q25 Main function of Golgi complex is?
Q26 Give example of two false fruits.
Question number 27 and 28 are true false type questions write answer in the form of true or false.
Q27 Presence of protoplasm is life.
Q28 In the five kingdom classification system virus has suitable place.
Section ‘B’
Q29 How does a nucleoid differ from a nucleus?
Or
What are viroids?
Q30 Explain aestivation and draw the volvate aestivation.
Q31 Write definition with example homologous and analogous organs.
Q32 Draw the well labelled diagram of a bacterial cell
Section ‘C’
Q33 What is binomial nomenclature explain with example.
Q34 Write differences between chlorophyceae, pheophyceae and Rodophyceae.
Or
i) Identify the plant (a).
ii) Write the name of its 2 generations.
iii) Write the name of its male and female reproductive organs
Q35 explain with diagram structure of Mitochondria.
Or
Draw well labelled diagram of a chloroplast along with its function.
Q36 Explain interphase of cell cycle with suitable diagram.
Section ‘D’
Q37 Explain with suitable example bilateral symmetry, radial symmetry, coelomate, acoelomate, pseudo coelomate animals.
Or
Write salient features of class Mammalia.
Q38 write the floral characters of family Solanaceae.
i) Draw the floral diagram of any member of this family
ii) also write its floral formula.
iii) Mention its two economic importance.
Or
Describe the different regions of root and draw a well labelled diagram.
Q39 Describe with diagram different stages of karyokinesis of meiosis.
Or
Write differences between mitosis and meiosis. With diagram.