SCC is a place where u can get free study material for academic & competitive exams like CTET,SSC,IIT,NDA,Medical exams etc,

Thursday, 5 November 2015

Test paper "Science"

Test  paper "Science" 

1. Stem is modified into cladode :
(A) Casuarina
(B) Asparagus
(C) Opuntia
(D) Euphorbia 

2. Verticillaster type of inflorescence is found in :
(A) Cotton 
(B) Datura
(C) Lilium 
(D) Ocimum

3. A simple one seeded fruit in which pericarp is fused with seed coat is :
(A) Achene 
(B) Caryopsis
(C) Cypsela 
(D) Nut

4. The portion of DNA which contains information for an entire polypeptide is called :
(A) Cistron 
(B) Muton
(C) Recon 
(D) Operon

5. Bicarpellary, syncarpous ovary with axile placentation is seen in :
(A) Solanaceae
(B) Caesalpinaceae
(C) Asteraceae
(D) Malvaceae

6. Alburnum is also called :
(A) Autumn wood
(B) Heart wood
(C) Sap wood
(D) Spring wood

7. The entry of pollen tube into the ovule through micropyle is called :
(A) Porogamy
(B) Mesogamy
(C) Anisogamy
(D) Chalazogamy

8. Type of pollination in Commelina is :
(A) Chasmogamy
(B) Geitonogamy
(C) Xenogamy
(D) Cleistogamy

9. The process of embryo formation without fertilization is known as :
(A) Apospory
(B) Apogamy
(C) Parthenocarpy
(D) Polyembryony

10. Which of the process Cholodny-Went theory is concerned with ?
(A) Photomorphogenesis
(B) Photoperiodism
(C) Phototropism
(D) Photorespiration


11. The hormone present in the liquid endosperm of coconut is :
(A) Cytokinin 
(B) Gibberellin
(C) Ethylene 
(D) Auxin

12. The phytohormone which influences apical dominance growth is :
(A) IAA 
(B) ABA
(C) GA3 
(D) C2H4

13. An example of short day plant is :
(A) Wheat
(B) Maize
(C) Chrysanthemum
(D) Radish

14. The ovary after fertilization is converted into :
(A) Embryo 
(B) Endosperm
(C) Fruit 
(D) Seed

15. The molecular formula of Chlorophyll ‘a’ is :
(A) C55H72O5N4Mg
(B) C55H70O5N4Mg
(C) C55H72O6N4Mg
(D) C50H72O5N4Mg

16. The first compound that accepts CO2 during dark phase is :
(A) NADP 
(B) Ferrodoxin
(C) RUBP 
(D) Cytochrome

17. Initiation codon for methionine is :
(A) AAA 
(B) UUU
(C) UAA 
(D) AUG

18. The deficiency of this micronutrient results in little leaf disease :
(A) Copper 
(B) Zinc
(C) Boron 
(D) Iron

19. Kranz anatomy is a morphological diversity in the leaves of :
(A) C3-plants
(B) C4-plants
(C) C3 and C4-plants
(D) CAM plants

20. Prechilling treatment to break seed dormancy is :
(A) Scarification
(B) Stratification
(C) Impaction
(D) Vernalization

21. The pyruvic acid formed during glycolysis is oxidized to CO2 and H2O in a cycle called :
(A) Calvin cycle
(B) Nitrogen cycle
(C) Hill reaction
(D) Krebs cycle

22. Respiratory quotient (RQ) is one in case of :
(A) Fatty acids
(B) Nucleic acids
(C) Carbohydrates
(D) Organic acids

23. An example of free living nitrogen fixing aerobic bacteria is :
(A) Clostridium
(B) Rhizobium
(C) Azotobacter
(D) Rhodospirillum

24. Identify the plant belonging to the Reed-Swamp stage in hydrarch succession :
(A) Juncus 
(B) Sagittaria
(C) Salix 
(D) Trapa

25. A gas produced by paddy fields and connected with global warming is :
(A) CO2 
(B) Chlorine
(C) H2S 
(D) Methane

26. If the strong partner is benefited and the weak partner is damaged, it is known as :
(A) Predation
(B) Allelopathy
(C) Symbiosis
(D) Commensalism

27. Acid rain is mainly caused due to increase in the levels of the gas(es) :
(A) SO2 only
(B) CO2 only
(C) SO2, CO2
(D) NO2 and SO2

28. The flow of energy among various trophic levels of an ecosystem is :
(A) Unidirectional
(B) Bidirectional
(C) Multidirectional
(D) Circular

29. Increase in atmospheric temperature due to CO2 is called :
(A) Pasteur effect
(B) Green-house effect
(C) Blackman effect
(D) Emerson effect

30. The protective-ozone layer is present in :
(A) Ionosphere
(B) Stratosphere
(C) Troposphere
(D) Lithosphere




More topics ..............



Share on Google Plus Share on whatsapp

Search

Popular Posts

Facebook

Blogger Tips and TricksLatest Tips For BloggersBlogger Tricks
SCC Education © 2017. Powered by Blogger.

Total Pageviews