BISHOP COTTON SCHOOL, SHIMLA
HALF YEARLY EXAMINATION -2021
CLASS IX BIOLOGY MAX. MARKS:80
TIME DURATION: 2 HOURS
General Instructions:
Read the question paper in the first 15 minutes. Read the questions carefully.
This paper consists of 8 pages and 7 questions.
Attempt all question is SECTION I and any four in SECTION II.
The intended marks for each question are given in brackets ( )
SECTION I [40 marks]
(Attempt all questions)
Q1
(A) Name the following:- (5)
(i) One microorganism that respires anaerobically.
(ii) Condition in which the anther and stigma mature at different times.
(iii) A parenchyma cell that contains chloroplast.
(iv) A leaf from the axil of which a flower develops.
(v) The category of animals that do not possess backbone.
(B) Give ONE difference between the following as mentioned in the bracket ( ) (5)
(i) Cold blooded and Warm-blooded animals (Body temperature)
(ii) Albuminous and Ex-albuminous seed (Endosperm)
(iii) Self-pollination and Cross- pollination (Number of pollen grains)
(iv) Glycolysis and Kreb’s Cycle (Site of Occurrence)
(v) Blood and Lymph (Presence of RBCs)
(C) Fill in the blanks:- (5)
(i) A flower which contains only male parts is called ______.
(ii) The largest number of organisms belong to ______ phylum.
(iii) ______ are the openings on the stem/ bark of trees that helps in exchange of
gases.
(iv) The seed is a ripened ________.
(v) ______ is the fourth whorl of a flower.
(D) Choose the correct answer: - (5)
(i) Pollen grains of flowers, pollinated by insect is:
(a) rough and sticky (b) rough and dry
(c) smooth and dry (d) large and showy
(ii) Aleurone layer is present in :
(a) Pea (b) Bean
(c) Maize (d) all of the above
(iii) During respiration :
(a) There is gain in dry weight
(b) There is loss in dry weight
(c) There is no change in weight
(d) None of the above
(iv) Solanum tuberosum is the scientific name for :
(a) China rose (b) Potato
(c) Bean (d) Maize
(v) Which is the supporting framework of the cell?
(a) Ribosomes (b) Mitochondria
(c) Plastids (d) Endoplasmic reticulum
(E) Where are the following structures located: - (5)
(i) Operculum
(ii) Cotyledons
(iii) Muscular foot
(iv) Two chambered heart
(v) Sieve plate
(F) Define the following: - (5)
(i) Catabolic avtivity
(ii) Viviparous germination
(iii) Cell
(iv) Inflorescence
(v) Species
(G) Give the functions of the following: - (5)
(i) Micropyle
(ii) Leucoplast
(iii) Stratified Epithelium
(iv) Nectaries
(v) Pyrogallic acid
(H) State whether True or False and rewrite the false statement: - (5)
(i) Protein is the first choice as a respiratory substance.
(ii) In epigeal germination cotyledons are pushed above the ground.
(iii) Ray florets of sunflower is an example of bisexual flower.
(iv) WBCs help in blood clotting.
(v) Cell membrane is non – living.
SECTION II [40 Marks]
Attempt any FOUR Questions
Question 2 : [10]
(A) What do you mean by Perianth and Pedicel? (2)
(B) The following diagram shows the specific structure of a flower. Study it carefully
and answer the following questions: ( 1+ 1+1)
(i) Identify it
(ii) What is its function?
(iii) Label parts 1 and 2.
(C) Give reason . (3)
(i) Petals are usually colored.
(ii) Sepals of Gulmohar are called petaloid.
(iii) Cross pollination is uneconomical for the plant.
(D) Identify the type of epithelial tissue.
(i) (ii)
Question 3 : [10]
(A) List any three advantages of Self-Pollination. (3)
(B) Observe the given diagram and answer the following questions :
(i) Name the structure (0.5)
(ii) Name the parts 1 to 5 ( 2.5)
(iii) What is the function of part labelled 4 (1)
(C) What happens to the following structures after fertilization in plants? (1)
(i) Ovary wall
(ii) Secondary nucleus
(D) Explain double fertilization? (2)
Question 4: [10]
(A) Answer the following questions: - (5)
(i) Name any one body part where squamous epithelium is present? What is its
function?
(ii) Walnut shells are hard, which tissue might be present in it?
(iii) What is the characteristic of connective tissue?
(iv) What are the characteristics of a meristematic tissue? Write any two.
(v) Which tissue is concerned with perception and responses in animals ?
(B) Study the given diagram below and answer the following questions:
(i) Identify the tissue. (1)
(ii) Name the parts labelled 1 to 4 (2)
(iii) What is the function of parts labelled 2 and 3? (2)
Q5: [10]
(A) Name the phylum to which the following organisms belong. Also write one
characteristic common to that phylum :- (5)
(B) Write any two drawbacks of two – kingdom classification. (2)
(C) Write any three features of class Aves. (3)
Q6: [10]
(A) An experiment was set up to study a physiological process. Study it carefully and
answer the following questions.
(i) Explain the physiological process occurring in the set up with the help of a
chemical reaction. (1)
(ii) Why do you think that bottle C should be covered with black cloth to get correct
results ? (1)
(iii) What is the purpose of keeping soda lime and lime water in bottle A and B ,
respectively? (2)
(iv) What change should you observe in bottle D and why ? (1)
(B) Write the full form of ATP and ADP. (2)
(C)Answer the following :
(i) Why do you think anerobic respiration is less efficient/ economical as compared
to aerobic respiration? (1)
(ii) Study the given diagram and answer the following questions:
(a) What is the aim of the above experiment? (1)
(b) Why it is recommended to peel off the seed coat of the germinating seeds
before introducing them in the test tube? (1)
Q7: [10]
(A) Given below is a diagram , study it carefully and answer the following questions:
(i) Label its parts numbered 1 to 6 (3)
(ii) What is the function of part labelled 2 ? (1)
(iii) Why is the above structured referred to as maize grain, but not maize seed or
maize fruit? (1)
(B) Identify which group/ division of kingdom plantae this plant belongs to , and also
write its any one characteristic. (2)
(C) What is Viviparous germination? Give one example of a plant showing this
germination. (1)
(D) Study the given diagram , and answer the given questions:
(i) Name the structure. (1)
(ii) Why is it important to the cell? (1)
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