1.         When the plasmolysed cells are again placed in water, there is a recovery to the original condition due to endosmosis of water. This is called __________.

(Plasmolysis, Incipient Plasmolysis, Complete Plasmolysis, Deplasmolysis)

2.         Rizobium is found in __________.

(Roots of wheat, Roots of rice, Root-nodules of pea, Deplasmolysis)

3.         The oxygen released in photosynthesis comes from __________.

(Carbon dioxide, Carbohydrates, Water, None of above)

4.         Cell organella related with respiration is __________.

(Mitochondria, Centriole, Coldgi Body, Nucleus)

5.         The end products of glycolysis is __________.

(Citric Acid, Pyruvic Acid, Ethyl alcohol, Glyceraldehyde)

6.         Positive geotropism is observed in __________.

(Primary roots, Sucking roots, Aerial roots, None of these)

7.         Absorption of water by roots is increased when __________.

(Transpiration rate is less, Salt absorption is increased, Transpiratin rate is incrreased. Photosynthesis rate is increased)

8.         In plant cell vacuole contains __________.

(Gases, Vacuum, Dissolved Mineral salts, Water)

9.         The union of male and female gametes results in the formation of __________.

(Aplanospore, Meiospore, Zygote, None of these)

10.     Enzymes are basically __________.

(Proteins, Vitamins, Fats, Carbohydrates)

11.     Semi-permeability is the property of __________.

(Plasma Membrane, Cell wall, Colgi body, Endoplasmic Reticulum)

12.     The initial stage of water absorption by root cell is by __________.

(Osmosis, Imbibition, Absorption, Diffusion)

13.     Duplication of DNA is called __________.

(Transduction, Transcription, Translation, Replication)

14.     Watson and Crick are credited for finding __________.

(DNA is the carrier of genetic information, DNA is a double-stranded helix, RNA is a double-stranded helix, DNA is composed of sugar, phosphoric acid and nitrogenous bases)

15.     __________ is the unit of inheritance.

(Phenotype, Genotype, Gene, None of these)

16.     __________ organalle is related with genetic engineering.

(Plastids, Plasmids, Mutations, Hybrid Vigour)

17.     The pollen tube which moves through the style towards ovary is an example of __________.

(Phototropism, Thigmotropism, Hydrotropism, None of these)

18.     Cytokinins promote __________.

(Cell division, Apical growth, Tallness, Dwarfness)

19.     The number of chromosomes in humans is __________.

(56, 46, 36)

20.     The tendency of genes to remain together is called __________.

(Linkage, Crossing over, Gena mutation)

21.     Cross fertilization of phenotypically dominant individual with a homozygous recessive individual is __________.

(Dihybrid cross, Munohybrid Cross, Test Cross)

22.     Cytokinesis is the division of __________.

(Nucleus, Cytoplasm, Vacuole)

23.     Inheritance of acquired characters was suggested by __________.

(Wallace, Aristotle, Lamarck)

24.     Translocation of organic food substances takes place through __________.

(Xylem, Phloem, Endodermis)

25.     Absorption of water and mineral salts from the soil takes place through __________.

(Older roots, Younger roots, Both of them)

26.     Respiration in plants takes place during __________.

(Day time only, Night time only, Day and night both)

27.     Process of transpiration is effected by __________.

(Light only, temperature only, both of these)

28.     Mitosis takes place in __________.

(Somatic Cell, Sickle cell, Zylem Cell)

29.     Transpiration is necessary for __________.

(Movement of Curvature, Synthesis of food material, Conduction of Water)

30.     Munch Hypothesis was proposed to explain __________.

(Translocation, Ascent of Sap, Transpiration)

31.     Human male set of chromosomes is __________.

(44 + xy, 44 + xx, 44 + 00)

32.     The first stable compound formed during photosynthesis is __________.

(ATP, 3PGA, Pyruvic Acid)

33.     During Meiosis crossing over takes place at __________.

(Leptotene, Diplotene, Diakenesis)

34.     Paleontology evidences are considered as evidence of __________.

(Vestiges, Fossils, Embryo)

35.     The genotype of Hybrid is __________.

(T, Tt, tt)

36.     The blood group of a man with neither antigens is __________.

(‘O’ Group, ‘A’ Group, ‘AB’ Group)

37.     The changes in chromosomes are called __________.

(Linkage, Crossing over, Chromosomal aberration)

38.     The growth in plants can be measured by __________.

(Photometer, Respirometer, Auxanometer)

39.     Oxygen is evolved during photosynthesis from __________.

(Water, Carbon dioxide, Carbohydrate)

40.     The two chromatics of each chromosome are held together at __________.

(Centromere, Centrosome, Chiasma)

41.     The sex-linked character in man is __________.

(Hieght, Colour-blindness, Colour of skin)

42.     A bacterial cell divides by __________.

(Mitosis, Amitosis, Meiosis)

43.     Gene pool is the sum total of __________.

(Genes, Gene frequency, Gene in population)

44.     Karyokinesis is the division of __________.

(Nucleus, Cytoplasm, Vacuole)

45.     The cell wall is __________.

(Permeable, Impermeable, Semipermeable)

46.     The opening and closing of stomata are controlled by __________.

(Stomatal cells, Guard cells, Zylem Cells)

47.     The physical process in which water is sucked up by a certain dry or semi-dry material is __________.

(Diffusion, Imbibition, Osmosis, Plasmolysis)

48.     Inheritance and variation in living things is explained by __________.

(Ecology, Genetics, Taxonomy, Anatomy)

49.     The relative time of day and night to which plant is exposed is __________.

(Photophosphorylation, Phototaxis, Photoperiodism, Phototropism)

50.     In meiosis, the snapsis of homologous chromosomes takes place at this sub stage __________.

(Pachytene, Zygotene, Leptotene, Diplotene)

51.     The human blood genetic disease in which the red blood cells become of abnormal shape is called __________.

(Anemia, Pneumonia, Insomnia, Sickle-cell anemia)