XI Standard - 11th - Biology - First RevisionTest Question Paper - Samacheer Kalvi

                                          First Revision Test

Class: XI                                                                          Total marks:70                                                 

Subject :Biology

                                               Part-I Bio-Botany

                                              SECTION - 1

I.(i) Answer all the questions.                                                                                        8X1=8

(ii) Choose the most appropriate answer from the given four alternatives and write the option code and the corresponding answer.

1.Centromere is required for __________.

  (a) Cytoplasmic cleavage                                    (b) Transcription

  (c) Movement of chromosomes towards pole     (d) Crossing over

2.Identify the correctly matched pair : 

(a) Bacteria - Crown gall

(b) Actinomycetes - Late blight

(c) Fungi - Sandal spike

(d) Mycoplasma - Lumpy jaw

3.Stomata of a plant open due to :

  (a) Influx of Cl−             (b) Influx of K+

  (c) Influx of OH−          (d) Efflux of K+

4.In which of the following wavelength the rate of photosynthesis is high ? 

 (a) 400 to 700 nm            (b) 200 to 400 nm

 (c) 500 to 800 nm            (d) 300 to 500 nm

5.The taxonomy which involves the similarities and dissimilarities among the immune system of different taxa is termed as :

 (a) Serotaxonomy             (b) Chemotaxonomy

 (c) Numerical taxonomy  (d) Molecular systematics

6.Select the Day neutral plants from the following :

(a) Tobacco, Soyabean, Rice                (b) Pea, Barley, Oats

(c) Oats, Cocklebur, Rhododendro      (d) Potato, Tomato, Cotton

7. The common bottle cork is a product of :

 (a) Xylem   (b) Phellem  (c) Vascular cambium  (d) Phellogen

8. Bryophyllum and Dioscorea are examples for :

(a) Cauline bud, apical bud         (b) Foliar bud, apical bud

(c) Cauline bud, foliar bud           (d) Foliar bud, cauline bud

                                                  SECTION – 2

II. Answer any four questions.                                                                           4X2=8

9. What is plectostele ? Give an example.

10. Differentiate between aggregate fruit and multiple fruit.

11. Bring out the significance of Transmission Electron Microscope

12. Write any two Enzymes and their sources and uses

13. What are the differences between Porous wood and Non-porous wood

14. The nitrogen is present in the atmosphere in huge amount but higher plants fail to utilize it.

 Why ?

                                                            SECTION – 3

III. Answer any three questions. Question No. 19 is Compulsory.                        3X3=9

15. Add a note on merits and demerits of Five Kingdom classification.

16. Write short notes on Nepenthes.

17. Draw a neat labelled diagram of stomata

18. Give a brief account on Programmed Cell Death (PCD)

19. Describe lamp-brush chromosomes with a neat diagram.

                                               

                                                           

 

 

 

 

 

                                                              SECTION – 4

IV. Answer all the questions.                                                                                         2X5=10

20. (a) Describe the floral characters of Clitoria ternatea. ( OR)

       (b) Write the economic importance of Fungi.

21. (a) Write the differences between Anatomy of Dicot root and Monocot root. (OR)

       (b) Describe the structure of Ganong’s potometer with a neat diagram.

 

                                     PART - II (BIO-ZOOLOGY)

                                                    SECTION – 1

I. (i) Answer all the questions.                                                                                           8X1=8

   (ii) Choose the most appropriate answer from the given four alternatives and write the option code     and the corresponding answer.

1. Sexually, earthworms are :

 (a) Hermaphroditic and self-fertilizing        (b) Sexes are separate 

 (c) Parthenogenic                                            (d) Hermaphroditic but not self-fertilizing

2. The myocardium of the ventricle is thrown into irregular muscular ridges called : 

(a) Chordae tendinae                                      (b) Bundle of His

 (c) Anastomoses                                       (d) Purkinje fibres

3.An example for Tautonymy : 

(a) Felis silvestris                                     (b) Naja naja

(c) Ailurus fulgens                                            (d) Felis domestica

4. Hypersecretion of Growth hormone in children leads to :

 (a) Grave’s disease    (b) Cretinism        (c) Tetany             (d) Gigantism

5. Rod cells are predominant in the __________.

(a) Optic nerve            (b) Blind spot         (c) Extra fovea region       (d) Iris

6.Synovial fluid is found in __________.

(a) Immovable joints                (b) Ventricles of the brain

 (c) Freely movable joints        (d) Spinal cord

7. The Tidal Volume of a normal person is __________. 

(a) 500 mL         (b) 800 mL         (c) 1100 - 1200 mL           (d) 1200 mL

8.The limbless amphibian is :

 (a) Rana              (b) Salamander         (c) Icthyophis            (d) Hyla

                                                     

                                                SECTION – 2

II. Answer any four questions.                                                                               4X2=8

9. Define extremophiles.

10. What are earthworm casts ?

11. Name the respiratory organs of Flatworm, Cockroach, Fish and Cat.

12. Compare closed and opened circulatory system

13. Tabulate the functions of brain lobes.

14. Write the different types of salivary glands.

                                            SECTION – 3

III. Answer any three questions. Question No. 19 is Compulsory.           3X3=9

15. Name the disorder caused due to the hyposecretion of parathyroid hormone and write its symptoms.

16. Draw and label the structure of a Nephron.

17. Some epithelial cells are pseudostratified. What does this mean ?

18. Give the economic importance of lac insect.

19. Aqueous humour maintains the intra-ocular pressure - Justify.

                                              

                                            SECTION – 4

 IV.Answer all the questions.                                                                    2x5=10

20. (a) Explain the origin and conduction of Heart Beat.   (OR )

       (b) What are the various classical taxonomical tools ? Explain.

21. (a) List out the various functions of skeletal system. (OR)

     (b) Fishes provide a good staple food to tide over the nutritional needs of man. Discuss the    various fish by-products.