CLASSXI Sample paper of biology

 

SAMPLE PAPER OF BIOLOGY

CLASSXI

SET-V

Q. NO.	QUESTION	MARKS
	Section A
1.	Name two Cyanobacteria which have the ability to fix atmospheric nitrogen..	1
2.	Which pigment imparts red colour to red algae.	1
3.	Organs of excretion in annelids and insects are? Or Name the body cavity which is not lined by coelomic epithelium in nematodes	1
4.	Give an example of plant having basal Placentation.	1
5.	Which tissue connects muscle to a bone?	1
6.	State the function of neuroglial Cells.	1
7.	Name the Pyrimidine Base that is present in the RNA and not in the DNA	1
8.	Cycle in which generation of ATP and NADPH2 occurs in plants?	1
9.	In which form birds excrete out their waste?	1
10	What is the common name of Sino-auricular node?	1
11.	Assertion:- Bacteria are classified among plants Reason: They have cell walls a) Both assertion and reason are true, and reason is the correct explanation of assertion.  b) Both assertion and reason are true but reason is not the correct explanation of assertion.  c) Assertion is true but reason is false.  d) Both assertion and reason are false.	1
12.	Assertion: The cymose type of inflorescence has limited growth Reason:- In cymose inflorescence the main axis terminates into a flower  a) Both assertion and reason are true and reason is the correct explanation of assertion.  b) Both assertion and reason are true but reason is not the correct explanation of assertion.  c) Assertion is true but reason is false.  d) Both assertion and reason are false.	1
13.	Assertion: Meiosis results in the production of haploid cells Reason: Synapsis occurs during leptotene.  a) Both assertion and reason are true and reason is the correct explanation of assertion.  b) Both assertion and reason are true but reason is not the correct explanation of assertion.  c) Assertion is true but reason is false.  d) Both assertion and reason are false	1
14.	Assertion:- In mammals complex respiratory system has developed Reason: Mammalian skin is impermeable to gases.  a) Both assertion and reason are Are true and reason is the correct explanation of Assertion.  b) Both assertion and reason are true but reason is not the correct explanation of assertion.  C) Assertion is true but reason is false.  d) Both assertion and reason are false.	1
	( Case Study)
15.	Read the following passage and answer the questions:- In human beings the lungs are situated in the thoracic chamber which is formed dorsally by the vertebral column and ventrally by the sternum ,laterally by the ribs and on the lower side by the dome shaped diaphragm .The anatomical set up of the lungs in the Thorax is such that any change in the volume of the thoracic cavity will be reflected in the lung cavity. Such an arrangement is essential for breathing. Breathing involves two stages Inspiration and expiration .During inspiration the atmospheric air is drawn in and during expiration the alveolar air is released out. On average , a healthy human breaths ___ times/minute.  a) 12-16  b) 18-20  c) 70-72  d) 80-84  2. Air is sucked into the lungs by ______.  a) Ribs lift up  b)Diaphragm flattens  c)Ribs flatten  d) Both ribs lift up and diaphragm flattens  3. What term is used for the volume of air inspired or expired during normal respiration. .?  a)Tidal volume  b)Inspiratory reserve volume  c)Residual volume  d)Vital capacity  4) The residual volume of air is_____  a)6000 mL to 8000 mL  b)2500 mL to 3000 mL  c)1000 mL to 1100 mL  d)1100 mL to 1200 mL	4
16.	Read the following passage and answer the questions:-  The plant growth regulators are small simple molecules of diverse chemical composition .They are variously described as plant growth substances, plant hormones or phytohormones. The plant growth regulators can be broadly divided into two groups based on their functions in the living plant body. one group of PGRs are involved in growth promoting activities such as cell division, cell enlargement, pattern formation, tropic growth ,flowering,fruiting and seed formation .These are also called plant growth promoters .ThePGRs of other group play an important role in plant responses to wounds and stresses of biotic and abiotic origin.They are also involved in various growth inhibiting activities such as dormancy and abscission 1.The principal and naturally occurring auxin in plant is  a)NAA.  b)Maleic hydroxide  c) 2,4 D  d) IAA  2.Plant hormone controlling fruit ripening is  a)IAA  b)GA  c)Kinetin  d)Ethylene  3.Coconut water is rich in  a)Auxins b) Cytokinin c)Gibberlins d)Abscisic acid  4.Leave fall occurs when content of  1)Auxin increases  2)Auxin decreases  3)ABA decreases  4) GA decreases	4
	Section B
17.	List the various guidelines for naming of organisms.	2
18.	Give one word scientific term for the following :- a)Parasitic flat worm b)Locomotory organs in amoeba  c)Individual animals bearing both sex organs  d) Construction of an animal such as earthworm by repeated segments.	2
19.	Which organisms are called as the amphibians of plant kingdom .Why are they called so? Or What is heterospory? Briefly comment on its significance also	2
20.	Classify the following as warm blooded and cold blooded organisms. Rana, Scolidon, Penguin, Blue whale.	2
21.	Names of the tissue that lines the fallopian tube. State any one advantage of this tissue being present there	2
22.	Mention the two types of endoplasmic reticulum along with one function of each. Or What is cofactor? Write its various types.	2
23.	Distinguish between anaphase of mitosis from Anaphase 1 of meiosis	2
24.	In Cyclic phosphorylation only ATP is formed and no NADPH .Give the reason for it .where does phosphorylation takes place?	2
25.	Which hormonal deficiency is responsible for the following a)Diabetes mellitus b) Goitre	2
	Section C
26.	Enlist four features of arthropods. Name any two examples of economically useful Arthropods.	3
27.	Relative position of floral parts on thalamus result in different flower types .Explain the various types with the help of diagrams	3
28.	On what basis are the chromosomes classified? Name the four types of chromosomes Or With the help of labelled diagram discuss the fluid Mosaic model of plasma membrane.	3
29.	Give diagrammatic representation of Kreb’s cycle	3
30.	Draw a standard ECG and explain the different segments in it	3
	Section D
31.	a) With the help of labelled diagrams explain mitosis in a cell b) If a cell with 40 chromosomes undergoes meiosis, how many daughter cell would be formed and how many chromosomes would each daughter cell have? Or Describe prophase 1 of meiosis with the help of diagram .why is meiosis called a reductional division?	5
32.	Describe with the help of flow diagram Z scheme of light reaction. Or  Explain Hatch and slack pathway with the help of a diagram.	5
33.	Give a brief description of counter current mechanism.  Or  Describe the important steps in muscle contraction	5

End of Paper